Equipment and method for testing mechanical property of oxide eutectic ceramic material

Abstract

The invention provides mechanical property testing equipment and testing method for an oxide eutectic ceramic material, and relates to the technical field of performance testing of additive manufacturing ceramic materials.The mechanical property testing method comprises the steps that multiple batches of to-be-tested samples are prepared from the oxide eutectic ceramic material; selecting any batch of to-be-tested samples and placing the to-be-tested samples in mechanical property testing equipment; adjusting the test temperature of the mechanical property test equipment to the target temperature point; at the target temperature point, sequentially and respectively testing corresponding mechanical properties of multiple groups of samples to be tested; after testing of the batch of samples to be tested is completed, the samples are moved out of the mechanical property testing equipment; and repeating the above steps for each batch of remaining untested samples to be tested until all batches of samples to be tested complete mechanical property testing under the corresponding target temperature point. According to the method, the mechanical property of the oxide eutectic ceramic sample is tested under the ultra-high-temperature wide-temperature-range condition, and the problems of efficiency and consistency of multiple high-temperature mechanical tests under the wide temperature range in a traditional method are solved.

Description

Technical Field

[0001] This invention belongs to the field of performance testing technology for additive manufacturing ceramic materials, specifically relating to a mechanical property testing device and method for oxide eutectic ceramic materials. Background Technology

[0002] Oxide eutectic ceramics, due to their high melting point, excellent high-temperature phase stability, creep resistance, and outstanding high-temperature strength retention, are considered key candidate materials for ultra-high temperature hot-end components of next-generation aero-engines, gas turbines, and other high-end equipment. These components operate in extremely harsh environments with a very wide operating temperature range and must withstand complex mechanical loads. Therefore, comprehensively and accurately obtaining mechanical property data (including high-temperature strength, creep, stress relaxation, etc.) of materials across the entire temperature range, especially in the ultra-high temperature stage above 1500℃, is crucial for material design and development, process optimization, service reliability assessment, and life prediction. Traditional material performance characterization methods often test at a single temperature point, which is insufficient to meet the need for systematic research on the performance evolution of materials across the entire temperature range.

[0003] Currently, the mechanical property testing of ultra-high temperature ceramic materials generally adopts the traditional testing mode of single sample and single temperature point. To obtain a complete mechanical property spectrum of the material at multiple characteristic temperature points (such as room temperature, 800℃, 1200℃, 1500℃, and 1600℃) over a wide temperature range, it is necessary to prepare a large number of samples with highly consistent geometry and properties, and conduct multiple independent high-temperature experiments on each sample. Each experiment requires a lengthy cycle of sample loading, heating, holding, testing, cooling, and sampling, making the overall testing time last for weeks or even months, resulting in high costs and extremely low testing efficiency. More importantly, the inevitable performance dispersion between different batches of samples introduces significant errors, seriously affecting the comparability and reliability of data at different temperature points, making it difficult to accurately reveal the true law of material properties changing with temperature. Summary of the Invention

[0004] Therefore, the present invention provides a mechanical property testing device and method for oxide eutectic ceramic materials, which can solve the problem of low testing efficiency in the prior art.

[0005] To address the above problems, this invention provides a method for testing the mechanical properties of oxide eutectic ceramic materials, comprising the following steps:

[0006] Preparation steps: Prepare multiple batches of test samples using oxide eutectic ceramic materials;

[0007] Among them, multiple batches of test samples are used to test various mechanical properties of oxide eutectic ceramic materials at different temperature points; each batch of test samples includes multiple sets of test samples, and the multiple sets of test samples are used to test various mechanical properties of oxide eutectic ceramic materials.

[0008] Sample placement procedure: Select any batch of samples to be tested and place them in the mechanical property testing equipment;

[0009] Temperature adjustment steps: Adjust the test temperature of the mechanical property testing equipment to the target temperature point;

[0010] Intra-group testing steps: At the target temperature point, the corresponding mechanical properties of multiple groups of test samples are tested sequentially; after the testing of this batch of test samples is completed, they are removed from the mechanical property testing equipment;

[0011] Cyclic testing steps: For each remaining untested batch of test samples, repeat the sample placement steps, temperature adjustment steps, and group testing steps until all batches of test samples have completed the mechanical property tests at the corresponding target temperature points.

[0012] Furthermore, the test temperature range covers room temperature to 1600°C.

[0013] Furthermore, the various mechanical properties include stress-fixed creep test, strain-fixed stress relaxation test, and flexural strength test;

[0014] Preferably, each batch of test samples contains at least three sets of test samples, corresponding to the stress-fixed creep test, strain-fixed stress relaxation test, and flexural strength test, respectively.

[0015] Furthermore, the multiple test temperature points are set sequentially from low temperature to high temperature, and the tests on the multiple batches of test samples are performed in the order of the corresponding test temperature points from low temperature to high temperature.

[0016] Furthermore, when multiple batches of test samples are tested in order from low temperature to high temperature, the heating rate of the mechanical property testing equipment is 2-8℃ / min.

[0017] Furthermore, the temperature difference between adjacent temperature points is ≥100℃.

[0018] Furthermore, each group of test samples includes multiple test samples;

[0019] Preferably, the dimensions of each sample to be tested are 35mm × 4mm × 3mm; the dimensional deviation is ±0.1mm.

[0020] Furthermore, after completing the mechanical property tests of a batch of test samples, the temperature of the mechanical property testing equipment is raised to the next temperature point, and the mechanical property tests of the next batch of test samples are carried out at the next temperature point.

[0021] On the other hand, the present invention provides a mechanical property testing device for oxide eutectic ceramic materials, the mechanical property testing device being used to perform the mechanical property testing method for oxide eutectic ceramic materials described in any of the above claims; the testing device includes:

[0022] The sample carrying module is used to hold multiple batches of samples to be tested;

[0023] The mechanical testing module is used to perform corresponding mechanical tests on the sample to be tested.

[0024] Temperature environment module, used to provide test temperature points;

[0025] The control and execution module is used to control the sample carrying module, mechanical testing module and temperature environment module to perform corresponding steps.

[0026] The mechanical property testing equipment and method for oxide eutectic ceramic materials provided by this invention have the following beneficial effects:

[0027] 1. This invention employs a programmed temperature sequence control combined with multi-mode cyclic testing, solving the core problem of low efficiency in wide-temperature-range mechanical property testing. Traditional testing methods require independent experiments at different temperature points, which is time-consuming and consumes a large amount of samples. This invention precisely controls a single high-temperature environment furnace according to a preset temperature sequence (T1, T2, ..., T...) using a computer program. n The sequential switching allows for the sequential execution of stress-fixed creep tests and strain-fixed stress relaxation tests on multiple splines after each temperature point stabilizes. This enables efficient testing of mechanical properties at multiple characteristic temperature points within the ultra-high temperature range from room temperature to 1600℃, reducing the testing cycle required by traditional methods from several weeks to several days, resulting in a significant improvement in efficiency.

[0028] 2. This invention employs a multi-sample collaborative testing strategy within the same batch, effectively ensuring high consistency and reliability of the test data. Addressing the performance dispersion issue inherent in the preparation of oxide eutectic ceramics, this invention requires the preparation of 60 identical standard samples for each material, completing the testing of the entire temperature sequence under the same conditions. This method eliminates performance differences between different batches of samples, ensuring optimal comparability of performance data at different temperature points. It accurately reflects the material's performance variation with temperature, providing reliable data support for material design and performance evaluation.

[0029] 3. This invention achieves efficient and reliable testing of mechanical properties over a wide temperature range at an ultra-high temperature of 1600℃, overcoming the technical bottleneck of traditional methods at extreme temperatures. Traditional mechanical testing equipment is limited by heating elements, fixture materials, and temperature measurement technology, and the stable testing temperature is usually below 1400℃, making it difficult to meet the research and development needs of next-generation ultra-high temperature ceramic materials. Attached Figure Description

[0030] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the host computer of the test equipment of the present invention;

[0032] Figure 2 The strain rate diagrams are obtained from a fixed stress of 100 MPa in Example 1 and Comparative Example 1.

[0033] Figure 3 These are stress diagrams measured at a fixed strain rate of 30% in Example 1 and Comparative Example 1.

[0034] Figure 4 The diagrams show the flexural strength of Example 1 and Comparative Example 1.

[0035] Figure 5 The strain rate diagrams are obtained from a fixed stress of 100 MPa in Example 2 and Comparative Example 2.

[0036] Figure 6 These are stress diagrams measured at a fixed strain rate of 30% in Example 2 and Comparative Example 2.

[0037] Figure 7 The diagrams show the flexural strength of Example 2 and Comparative Example 2.

[0038] Figure 8 This is a comparison chart of the testing time used by the testing method of this invention and the traditional method. Detailed Implementation

[0039] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0040] To improve testing efficiency, the concept of multi-sample parallel testing has emerged in recent years, such as designing multi-temperature zone testing devices to simultaneously test multiple temperature points in a single experiment. However, such solutions typically rely on complex environmental chamber structural designs, requiring the integration of multiple independent heating, insulation, and temperature control systems within a single device. This results in high manufacturing difficulty and cost, as well as technical challenges such as mutual thermal interference between different temperature zones, making large-scale application difficult.

[0041] This invention mainly provides the following technical solutions:

[0042] This invention provides an ultra-high temperature, wide temperature range, high-throughput mechanical property testing device and method for oxide eutectic ceramic materials, comprising the following steps:

[0043] Sample preparation steps: Prepare oxide eutectic ceramic samples with standard geometric dimensions. Prepare 12-16 sets for each material, with 3-6 identical samples in each set. Using standard geometric dimensions ensures the accuracy, comparability, and repeatability of test results. Non-standard dimensions can easily introduce edge effects, stress concentration, or uneven thermal gradients, affecting the measurement of creep, stress relaxation, and fracture behavior. Furthermore, standard dimensions facilitate comparison with existing databases or literature results, promoting the widespread application and acceptance of the data. Prepare 12-16 sets for each material, with 3-6 identical samples in each set.

[0044] Clamping and environmental setup steps: Clamp the three groups (9-18 specimens) of the specimens into the ultra-high temperature mechanical testing system and place them in a high temperature environment furnace;

[0045] Programmed temperature control steps: The high-temperature environmental furnace is controlled by a computer program to operate according to a preset temperature sequence (T1, T2, ..., T...). n The test involves sequential temperature switching, covering a temperature range from room temperature to 1600℃, with 3-8 temperature points. The temperature difference between adjacent points should be no less than 100℃. This requirement is primarily to efficiently and significantly capture the changing trends of material mechanical behavior with temperature over a wide temperature range (room temperature – 1600℃). Too small a temperature difference may lead to overly dense data points, increasing test time and potentially masking significant differences in temperature changes. An interval of no less than 100℃ helps to fully characterize the material's performance evolution under different thermal activation mechanisms at a limited number of temperature points, while balancing test efficiency and data representativeness.

[0046] Cyclic test execution steps: After thermal stability is achieved at each temperature point, execute the following test modes in sequence:

[0047] Stress-fixed creep test: A constant stress σ0 is applied to the specimen, and the strain variation ε(t) over time is monitored and recorded;

[0048] Strain-fixed stress relaxation test: A constant initial strain ε0 is applied to the specimen and held, and the stress change σ(t) over time is monitored and recorded;

[0049] Bending strength test: After reaching thermal stability at each temperature point and holding for 15 minutes, perform high-temperature flexural strength test in sequence: apply bending load at a displacement rate of 0.5-1.5 mm / min until the specimen breaks, record the maximum load value and calculate the flexural strength;

[0050] Data acquisition and processing steps: The test data at each temperature point is acquired in real time through the high temperature deformation measurement unit, and the test results at different temperature points are integrated and processed.

[0051] In this system, by switching test modes in the computer control system, the software will call different control algorithms, data acquisition frequencies, and result analysis programs according to the selected mode.

[0052] Preferably, in the sample preparation step, the oxide eutectic ceramic sample is a standard three-point bending test bar with dimensions of 35 mm × 4 mm × 3 mm, and the dimensional deviation of all samples is controlled within ±0.1 mm.

[0053] After completing the test at one temperature point, the control program moves to the next temperature point and repeats the test process, allowing for continuous testing of multiple splines under the same conditions.

[0054] Preferably, in the programmed temperature control step, the high-temperature environment furnace has a single temperature zone structure, and the sequential switching of temperature points and the heat preservation process are realized by computer program control, with the heating rate controlled at 2-8℃ / min.

[0055] This rate range is designed to balance temperature control stability with experimental efficiency. Too low a heating rate will significantly prolong experimental time, while too high a rate can easily lead to significant thermal gradients within the furnace and sample, affecting temperature uniformity and measurement accuracy.

[0056] Preferably, in the cyclic test execution step, the parameters σ0 of the stress-fixed creep test and ε0 of the strain-fixed stress relaxation test can be programmed and adjusted according to different material properties, and the test sequence can also be flexibly set as needed.

[0057] On the other hand, the present invention provides a mechanical property testing device for oxide eutectic ceramic materials, the mechanical property testing device being used to perform the mechanical property testing method for oxide eutectic ceramic materials described above; such as... Figure 1As shown, the testing equipment consists of five parts: a main frame and transmission mechanism, a heating furnace (used to provide test temperature points and function as a temperature environment module with the controller), a propulsion mechanism (which holds multiple batches of test samples, equivalent to a sample carrying module), a control cabinet, and a microcomputer controller (which can execute corresponding steps for the product carrying module, mechanical testing module, and temperature environment module, and is a control and execution module).

[0058] (1) The main unit adopts a high-rigidity gantry frame and servo ball screw drive, which can realize high-precision displacement control and ensure the accuracy of sample deformation measurement.

[0059] (2) The heating furnace adopts an open-type stepped structure design and heating element, which can achieve uniform heating at 1600℃ and support continuous sample pushing.

[0060] (3) The system achieves precise control of temperature, pressure and displacement through multi-sensor integration and PID closed-loop control, supporting continuous automated testing of multiple samples.

[0061] Three tests are performed within the same area. By switching test modes in the computer control system, the software will call different control algorithms, data acquisition frequencies, and result analysis programs according to the selected mode. The displacement sensor (digital grating displacement gauge) is directly mounted on the main frame and mechanically connected to the crossbeam or knife-edge mechanism. The displacement sensor is not directly activated by the temperature sensor signal, but is controlled and coordinated by the host computer according to the test program. The specific process is as follows:

[0062] A temperature sensor monitors the furnace temperature. Once the temperature reaches the set value and is maintained at that temperature, the temperature signal is sent to the host computer via the PLC. The host computer, according to preset logic (such as a program sequence), commands the propulsion mechanism to push the sample to the testing station. Then, the host computer sends a command to the servo controller, activating the servo motor to drive the crossbeam downwards for loading testing. During the loading test, displacement and pressure sensors are simultaneously activated to acquire data, measuring deformation and load in real time. The host computer simultaneously plots load-time and displacement-time curves and automatically determines if the sample breaks.

[0063] In summary, this invention provides a high-throughput mechanical property testing device and method for ultra-high temperature wide-temperature-range oxide eutectic ceramic materials. By employing a programmed temperature-load timing control and cyclic testing strategy, it solves the technical problems of low efficiency and poor data consistency in traditional testing methods. Specific innovations include: achieving automated testing over a wide temperature range through programmed temperature sequence control, significantly improving testing efficiency; employing a multi-sample testing strategy within the same batch to ensure data consistency and reliability; and integrating a high-temperature deformation measurement and control system to guarantee ultra-high temperature testing accuracy. Through these innovative means, this invention provides an efficient and reliable testing method for the research and development of ultra-high temperature ceramic materials, solving a long-standing testing bottleneck in this field.

[0064] The present invention will be further described below with reference to specific embodiments and comparative examples.

[0065] Example 1

[0066] This embodiment uses the method of the present invention to perform high-throughput mechanical property testing on Al2O3 / YAG oxide eutectic ceramics.

[0067] Sample preparation steps: Prepare Al2O3 / YAG oxide eutectic ceramic samples with standard geometric dimensions. Prepare 18 groups for each material, with 4 samples in each group, for a total of 72 identical samples.

[0068] Clamping and environmental setup steps: Clamp the three groups (12 specimens) of the specimens into the ultra-high temperature mechanical testing system and place them in the high temperature environment furnace;

[0069] Programmed temperature control steps: The high-temperature environmental furnace is controlled by a computer program to operate according to a preset temperature sequence (T1, T2, ..., T...). n The system performs sequential temperature switching, with a temperature range covering room temperature to 1600℃, and six temperature points (room temperature 25℃, 400℃, 800℃, 1200℃, 1500℃, and 1600℃).

[0070] Cyclic test execution steps: After thermal stability is achieved at each temperature point, execute the following test modes in sequence:

[0071] Stress-fixed creep test: A constant stress σ0 (σ0=100MPa) was applied to four specimens, and the strain variation ε(t) over time was monitored and recorded;

[0072] Strain-fixed stress relaxation test: A constant initial strain ε0 (ε0=30%) was applied to four specimens and held, and the stress variation σ(t) over time was monitored and recorded;

[0073] Bending strength test: First, four test bars were subjected to three-point bending loads at a beam displacement rate of 0.5 mm / min until they fractured sequentially. The data system automatically recorded the maximum load and calculated the bending strength.

[0074] Data acquisition and processing steps: The test data at each temperature point is acquired in real time through the high temperature deformation measurement unit, and the test results at different temperature points are integrated and processed.

[0075] Preferably, in the sample preparation step, the oxide eutectic ceramic sample is a standard three-point bending test bar with dimensions of 35×4×3mm, and the dimensional deviation of all samples is controlled within ±0.1mm.

[0076] In the programmed temperature control step, the high-temperature environment furnace has a single temperature zone structure, and the sequential switching of temperature points and the heat preservation process are realized by computer program control, with the heating rate controlled at 8℃ / min.

[0077] After completing the test at one temperature point, the control program continued to raise the temperature to the next temperature point and repeated the test process. This allowed for continuous testing of multiple spline specimens at the same temperature, obtaining complete creep, stress relaxation, and high-temperature flexural strength data for six temperature points. The total time to complete the data collection for all six temperature points was approximately 90 hours, and the data showed good consistency. Specific data are as follows: Figure 2-4 As shown.

[0078] Example 2

[0079] This embodiment uses the method of the present invention to test Al2O3 / GAP / ZrO2 ternary oxide eutectic ceramics. Sample preparation steps: Prepare Al2O3 / YAG oxide eutectic ceramic samples with standard geometric dimensions. Prepare 12 groups of each material, with 4 samples in each group, for a total of 48 identical samples.

[0080] Clamping and environmental setup steps: Clamp the two groups (8 specimens) of the specimens into the ultra-high temperature mechanical testing system and place them in the high temperature environment furnace;

[0081] Programmed temperature control steps: The high-temperature environmental furnace is controlled by a computer program to operate according to a preset temperature sequence (T1, T2, ..., T...). n The system performs sequential temperature switching, with a temperature range covering room temperature to 1600℃, and six temperature points (room temperature 25℃, 400℃, 800℃, 1200℃, 1500℃, and 1600℃).

[0082] Cyclic test execution steps: After thermal stability is achieved at each temperature point, execute the following test modes in sequence:

[0083] Stress-fixed creep test: A constant stress σ0 (σ0=100MPa) is applied to the specimen, and the strain variation ε(t) over time is monitored and recorded;

[0084] Strain-fixed stress relaxation test: A constant initial strain ε0 (ε0=30%) is applied to the specimen and held, and the stress change σ(t) over time is monitored and recorded;

[0085] Bending strength test: First, four test bars were subjected to three-point bending loads at a beam displacement rate of 0.5 mm / min until they fractured sequentially. The data system automatically recorded the maximum load and calculated the bending strength.

[0086] Data acquisition and processing steps: The test data at each temperature point is acquired in real time through the high temperature deformation measurement unit, and the test results at different temperature points are integrated and processed.

[0087] Preferably, in the sample preparation step, the oxide eutectic ceramic sample is a standard three-point bending test bar with dimensions of 35×4×3mm, and the dimensional deviation of all samples is controlled within ±0.1mm.

[0088] In the programmed temperature control step, the high-temperature environment furnace has a single temperature zone structure, and the sequential switching of temperature points and the heat preservation process are realized by computer program control, with the heating rate controlled at 8℃ / min.

[0089] After completing the test at one temperature point, the control program continued to raise the temperature to the next temperature point and repeated the test process. This allowed for continuous testing of multiple spline specimens at the same temperature, obtaining complete creep, stress relaxation, and high-temperature flexural strength data for six temperature points. The total time to complete the data collection for all six temperature points was approximately 90 hours, and the data showed good consistency. Specific data are as follows: Figure 5-7 As shown.

[0090] Comparative Example 1

[0091] This comparative example uses a traditional single-point testing method to test the Al2O3 / YAG binary oxide eutectic ceramic specimens from Example 1. Using 72 specimens prepared in the same batch, four specimens were used at each temperature point (25℃, 400℃, 800℃, 1200℃, 1500℃, 1600℃) to perform creep, stress relaxation, and high-temperature bending tests. Each test required independent sample preparation, heating, holding, and testing.

[0092] All other steps are the same as in Example 1.

[0093] Completing one set of tests (creep, relaxation, and flexural strength tests) at one temperature point takes approximately 12 hours (including thermal cycling time), and the total time for all six temperature points is approximately 300 hours (about 12.5 days). Test results show some dispersion in data among different specimens, especially at ultra-high temperatures of 1400℃ and 1600℃, where data fluctuations are significant. Specific data are as follows... Figure 2-4 As shown.

[0094] Comparative Example 2

[0095] This comparative example uses conventional methods to test the Al2O3 / GAP / ZrO2 ternary oxide eutectic ceramic specimens from Example 2. Each temperature point of each process requires testing with a separate test bar. Using 72 specimens prepared in the same batch, four test bars were used at each temperature point (25℃, 400℃, 800℃, 1200℃, 1500℃, 1600℃) to perform creep, stress relaxation, and high-temperature bending tests, respectively. Each test required independent sample loading, heating, holding, and testing.

[0096] All other steps are the same as in Example 2.

[0097] Completing one set of tests (creep, relaxation, and flexural strength tests) at one temperature point takes approximately 12 hours (including thermal cycling time), and the total time for all six temperature points is approximately 300 hours (about 12.5 days). Test results show some dispersion in data among different specimens, especially at ultra-high temperatures of 1400℃ and 1600℃, where data fluctuations are significant. Specific data are as follows... Figure 5-7 As shown.

[0098] As can be seen from Examples 1-2 and Comparative Examples 1-2, the embodiments of the present invention can complete the full test (creep, stress relaxation, and bending strength) at 6 temperature points in only about 90 hours, while the traditional single-point test method takes about 300 hours, which improves efficiency by more than 70%.

[0099] from Figure 2-7 It can be seen that the embodiments of the present invention employ a parallel testing strategy for multiple samples in the same batch, which effectively eliminates errors caused by sample dispersion, and the data fluctuation range is far superior to that of traditional methods. Figure 8 The results show that the programmed cyclical testing significantly reduces equipment downtime and minimizes equipment wear and tear caused by multiple sample loading, heating, and cooling operations.

[0100] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0101] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A method for testing the mechanical properties of oxide eutectic ceramic materials, characterized in that, Includes the following steps: Preparation steps: Prepare multiple batches of test samples using oxide eutectic ceramic materials; Among them, multiple batches of test samples are used to test various mechanical properties of oxide eutectic ceramic materials at different temperature points; each batch of test samples includes multiple sets of test samples, and the multiple sets of test samples are used to test various mechanical properties of oxide eutectic ceramic materials. Sample placement procedure: Select any batch of samples to be tested and place them in the mechanical property testing equipment; Temperature adjustment steps: Adjust the test temperature of the mechanical property testing equipment to the target temperature point; Intra-group testing steps: At the target temperature point, the corresponding mechanical properties of multiple groups of test samples are tested sequentially; after the testing of this batch of test samples is completed, they are removed from the mechanical property testing equipment; Cyclic testing steps: For each remaining untested batch of test samples, repeat the sample placement steps, temperature adjustment steps, and group testing steps until all batches of test samples have completed the mechanical property tests at the corresponding target temperature points.

2. The method for testing the mechanical properties of oxide eutectic ceramic materials according to claim 1, characterized in that, The test temperature range covers room temperature to 1600°C.

3. The method for testing the mechanical properties of oxide eutectic ceramic materials according to claim 1, characterized in that, The various mechanical properties include stress-fixed creep test, strain-fixed stress relaxation test, and flexural strength test; Preferably, each batch of test samples contains at least three sets of test samples, corresponding to the stress-fixed creep test, strain-fixed stress relaxation test, and flexural strength test, respectively.

4. The method for testing the mechanical properties of oxide eutectic ceramic materials according to claim 1, characterized in that, The multiple test temperature points are set sequentially from low temperature to high temperature, and the tests on the multiple batches of test samples are performed in the order of the corresponding test temperature points from low temperature to high temperature.

5. The method for testing the mechanical properties of oxide eutectic ceramic materials according to claim 4, characterized in that, When multiple batches of test samples are tested in order from low temperature to high temperature, the heating rate of the mechanical property testing equipment is 2-8℃ / min.

6. The method for testing the mechanical properties of oxide eutectic ceramic materials according to claim 4, characterized in that, The temperature difference between adjacent temperature points is ≥100℃.

7. The method for testing the mechanical properties of oxide eutectic ceramic materials according to claim 1, characterized in that, Each group of test samples includes multiple test samples; Preferably, the dimensions of each sample to be tested are 35mm × 4mm × 3mm; the dimensional deviation is ±0.1mm.

8. The method for testing the mechanical properties of oxide eutectic ceramic materials according to claim 1, characterized in that, After completing the mechanical property tests on a batch of samples, the temperature of the mechanical property testing equipment is raised to the next temperature point to continue the mechanical property tests on the next batch of samples.

9. A mechanical property testing device for oxide eutectic ceramic materials, characterized in that, The mechanical property testing equipment is used to perform the mechanical property testing method for oxide eutectic ceramic materials according to any one of claims 1-8; the testing equipment includes: The sample carrying module is used to hold multiple batches of samples to be tested; The mechanical testing module is used to perform corresponding mechanical tests on the sample to be tested. Temperature environment module, used to provide test temperature points; The control and execution module is used to control the sample carrying module, mechanical testing module and temperature environment module to perform corresponding steps.

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