A method for preparing metal oxide textured ceramic materials by rapid sintering at room temperature

A technology of rapid sintering and ceramic materials, which is applied in the field of materials, can solve the problems of low energy utilization rate, large hardware investment, and long sintering time, and achieve the effect of high energy utilization rate, small hardware investment, and short sintering time

Active Publication Date: 2022-06-28
陕西智航昱铠新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the defects of large hardware investment, high-temperature furnace equipment for sintering, long sintering time, high energy consumption, low energy utilization rate and high cost in the preparation of various oxide textured ceramic materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Rapid preparation of MgO textured ceramic materials without furnace at 20°C

[0034] Step 1: Weighing of MgO ultrafine powder: take 25.00 grams of MgO ultrafine powder with a particle size ranging from 1 nm to 20 nm.

[0035] Step 2: Preparation of saturated sodium chloride solution: Weigh 1.79 g of analytical grade sodium chloride, add the said sodium chloride to 5.0 mL of distilled water at 20°C, and stir evenly with a magnetic stirrer until the solution is clear. into a saturated solution of sodium chloride at 20°C.

[0036] Step 3: Preparation of MgO ultrafine powder precursor and wet body molding: all the saturated sodium chloride solution prepared in step 2 is injected into the MgO nano-powder, and 15.0 mL of distilled water is added, and then the MgO nano-powder is stirred until uniform, and placed Aged for 24 hours, and then dried MgO at 40 °C to a water content of 13% to obtain a MgO precursor; then put the prepared MgO precursor into a mold, and ap...

Embodiment 2

[0038] Example 2: Rapid preparation of MgO textured ceramic materials without furnace at 20°C

[0039] Step 1: Weighing of MgO ultrafine powder: take 30.00 grams of MgO ultrafine powder with a particle size of 5-50 nm.

[0040] Step 2: Preparation of saturated sodium sulfate solution: Weigh 0.93 g of analytically pure sodium sulfate powder, add sodium sulfate to 5.0 mL of distilled water at 20 °C, stir evenly with a magnetic stirrer, until the solution is clarified to make a 20 °C solution. A saturated solution of sodium sulfate.

[0041] Step 3: Preparation of MgO ultrafine powder precursor and wet body molding: all the saturated sodium sulfate solution prepared in step 2 was injected into MgO, and 15.0 mL of distilled water was added, and then the MgO powder was stirred until uniform, and left to age for 20 hours. Then, the MgO was dried to a water content of 10% at 42°C to obtain a MgO powder precursor; then the prepared MgO precursor was put into a mold, and a pressure of...

Embodiment 3

[0043] Example 3: Rapid preparation of BaO textured ceramic materials without furnace at 35°C

[0044] Step 1 Weighing of BaO ultrafine powder: take 35.00 grams of BaO ultrafine powder with a particle size of 10-100 nm.

[0045] Step 2 Prepare potassium chloride saturated solution, aluminum sulfate saturated solution and ferric nitrate saturated solution respectively: Weigh 0.39 grams of analytically pure potassium chloride powder, 0.43 grams of analytically pure grade aluminum sulfate powder and 1.66 grams of analytically pure grade ferric nitrate respectively Powder, at 35 ° C, the above-mentioned potassium chloride is added to 1.0 mL of distilled water to make a saturated solution of potassium chloride; the said aluminum sulfate is dissolved in 1.0 mL of distilled water, and 1.0 mol / L hydrochloric acid is added to adjust pH= 3 until the solution is clear, stir evenly with a magnetic stirrer to prepare a saturated solution of aluminum sulfate at 35°C; dissolve the ferric nit...

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Abstract

The invention relates to a method for preparing a metal oxide textured ceramic material by rapid sintering at normal temperature, which does not require a high-temperature heating furnace and directly and rapidly sinters metal oxide textured ceramics or oxide solid solution by combining the current thermal effect and the direct current electric field orientation effect at normal temperature A method for preparing textured ceramics or composite oxide textured ceramics. Compared with the existing textured ceramic sintering technology, this invention does not require high-temperature furnace equipment, nor does it need to heat samples in advance, and can realize densification sintering and texture formation of various oxide ceramic materials, with short sintering time, high efficiency, and hardware investment. Small size, high energy utilization rate, wide application range, simple process, good energy saving effect and low cost. It is suitable for large-scale preparation of oxide textured ceramics and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a method for preparing metal oxide textured ceramic materials by rapid sintering at room temperature, in particular to a method for preparing various metal oxide textures by direct and rapid sintering at room temperature by using direct current heating effect without a heating furnace. A method for preparing ceramics or oxide solid solution textured ceramics or composite oxide textured ceramics. Background technique [0002] Oxide ceramic materials can be used as structural ceramics or functional ceramic materials, and generally have many excellent physical and chemical properties such as: high chemical stability, high melting point, high temperature resistance, oxidation resistance, corrosion resistance, wear resistance, high temperature strength, mechanical and mechanical properties The common features such as excellent performance are widely used in engineering technology and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/64C04B35/01C04B35/04C04B35/10C04B35/26C04B35/443C04B35/453C04B35/46C04B35/468C04B35/48C04B35/495C04B35/505
CPCC04B35/64C04B35/04C04B35/01C04B35/453C04B35/10C04B35/2633C04B35/46C04B35/495C04B35/505C04B35/443C04B35/468C04B35/48C04B2235/3201C04B2235/5454C04B2235/602C04B2235/606C04B2235/666C04B2235/3217C04B2235/3272C04B2235/3208C04B2235/3215C04B2235/3203C04B2235/3284
Inventor 李焕勇张春辉黄欢欢王乾唐琦罗发
Owner 陕西智航昱铠新材料有限责任公司
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