Quantitative detection method for microcosmic combination of single ceramic spread sheet and matrix

A quantitative detection method and combined technology, which is applied in the field of quantitative detection of the microcosmic bonding between a single ceramic spreader and the substrate, and can solve the problem of not fully showing the overall situation of the bonding interface between the bottom surface of a single spreader and the substrate

Inactive Publication Date: 2019-04-16
江苏泰芯源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method reflects the combination of a single spreader and the matrix to a certain extent, but it does not fully show the overall situation of the interface between the bottom surface of a single spreader and the matrix

Method used

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  • Quantitative detection method for microcosmic combination of single ceramic spread sheet and matrix
  • Quantitative detection method for microcosmic combination of single ceramic spread sheet and matrix
  • Quantitative detection method for microcosmic combination of single ceramic spread sheet and matrix

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Based on the above method, adjust the following parameters of the spray gun 5: power 48kV, current 650A, voltage 74V, main gas 47slpm and secondary gas 11.8slpm, and adjust the spraying distance between the spray gun 5 and the substrate 1 to 80mm, and through the controllable device 6 Adjust the powder feeding rate to 38g·min -1 , to test the flight properties and microcosmic bonding of ceramic droplets. During the test, the temperature measurement and speed measurement system 4 was used to monitor the surface temperature of the molten droplets online at 2901±5K, and the flight speed was 238±3m·s -1 .

[0042] The final measured micro-shear strength is 7.8±0.1MPa.

[0043] Embodiment 2-embodiment 7 see table 2 for details.

[0044] Based on the embodiment 1-7 of table 1, establish as Figure 5 The quantitative relationship between the flying properties of the ceramic droplet and the microcosmic bonding rate and bonding strength between the spreader and the matrix is ...

specific Embodiment

[0045] The flight properties and microcosmic bonding of ceramic droplets under the specific examples of table 1

[0046]

[0047] As can be seen from Table 1, the embodiment illustrates the microcosmic combination between the spread and the matrix formed by the molten droplets under different flight properties in the plasma jet and their impact on the substrate, indicating that with the increase of the temperature speed, the microcosmic combination rate and Bond strength is also improved.

[0048] The present invention provides a method for quantitatively detecting the combination of the spread and the substrate formed by the impact of ceramic droplets on the substrate in the plasma jet. Ceramic droplets under different flight properties can be obtained by on-line monitoring of the temperature and speed of the molten droplets in different embodiments. At the same time, the pressure bonding method is used to quantitatively detect the microscopic bonding area between the bott...

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Abstract

The invention discloses a quantitative detection method for microcosmic combination of a single ceramic spread sheet and a matrix. Ceramic molten drops under different flight properties are obtained through online monitoring of the molten drop temperatures and speeds of different embodiments. Meanwhile, the micro-bonding area between the bottom surface of the spread sheet and the matrix after a single ceramic molten drop in the plasma jet impacts the matrix is quantitatively detected by adopting a pressurizing and gluing method. Statistics is carried out on the actual combination area by usingan image method. A micro-shearing force between the spread sheet and the matrix is dynamically tested in situ through a micro-welding spot strength tester. Finally, a quantitative relation between the flight properties of the ceramic molten drop and the microscopic bonding strength is established, and theoretical support for the precise control and microstructure forming mechanism of the supersonic plasma spraying high-performance thermal barrier coating is provided.

Description

technical field [0001] The present invention relates to the detection method of the microcosmic bond between the spread sheet and the substrate, which is the basic component unit in the plasma deposition thermal barrier coating structure, and particularly relates to the detection method of the microcosmic bonding strength between the ceramic spread sheet and the substrate after the droplet with different flying properties hits the substrate Quantitative Relationship. Background technique [0002] Plasma-sprayed zirconia-based thermal barrier coatings (Thermal Barrier Coatings, TBCs) have been widely used on the surface of hot-end components of aero-engines and gas turbines, effectively reducing the heating temperature of metal substrates. The principle of this method is that the agglomerated powder is sent into the high-temperature, high-speed plasma jet under the action of the carrier gas, and at the same time heat and mass transfer occur, and then have physical and chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 王玉白宇吴锴周峻柳琪李天庆胡永宝
Owner 江苏泰芯源科技有限公司
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