Preparation method of metallic oxide textured ceramic material through quick sintering at normal temperature

An alkali metal oxide, rapid sintering technology, applied in the field of materials, can solve the problems of low energy utilization rate, large hardware investment, long sintering time, etc., and achieve the effect of high energy utilization rate, small hardware investment, and short sintering time

Active Publication Date: 2019-11-15
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: Furnaceless Rapid Preparation of MgO Textured Ceramic Material at 20°C

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

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

[0036] Step 3 Preparation of MgO ultrafine powder precursor and wet green body molding: inject all the saturated sodium chloride solution prepared in step 2 into the MgO nanopowder, add 15.0mL of distilled water, stir the MgO nanopowder until uniform, and place Aging for 24 hours, then drying the MgO to a water content of 13% at 40°C to obtain a MgO precursor; then putting the prepared MgO precursor into a mold and applying a pressure of 4...

Embodiment 2

[0038] Example 2: Furnaceless Rapid Preparation of MgO Textured Ceramic Material 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 clear, and prepare 20 °C A saturated solution of sodium sulfate.

[0041] Step 3 Preparation of MgO ultrafine powder precursor and wet green body molding: inject all the saturated sodium sulfate solution prepared in step 2 into MgO, add 15.0 mL of distilled water, stir the MgO powder until uniform, and place it for aging for 20 hours. Then dry the MgO to a water content of 10% at 42°C to obtain a MgO powder precursor; then put the prepared MgO precursor into a mold and apply a pressure of 30MPa to shape the precursor into a shape wi...

Embodiment 3

[0043] Example 3: Furnaceless Rapid Preparation of BaO Textured Ceramic Materials 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 iron nitrate saturated solution respectively: Weigh 0.39 grams of analytically pure grade potassium chloride powder, 0.43 analytically pure grade aluminum sulfate powder and 1.66 grams of analytically pure grade ferric nitrate Powder, at 35°C, add the above-mentioned potassium chloride to 1.0mL distilled water to make a saturated solution of potassium chloride; dissolve the said aluminum sulfate in 1.0mL distilled water, and add 1.0mol / L hydrochloric acid to adjust the 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 nitrate in 1.0 mL of distilled water, and add ...

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Abstract

The invention relates to a preparation method of a metallic oxide textured ceramic material through quick sintering at the normal temperature. According to the preparation method of the metallic oxidetextured ceramic or oxide solid solution textured ceramic or composite oxide textured ceramic through direct quick sintering and combination of a current heating effect and a direct-current electricfield orientation effect at the normal temperature, a high-temperature heating furnace is not needed. Compared with the prior art, namely textured ceramic sintering, according to the preparation method, high-temperature furnace equipment is not needed, it is unnecessary to heat a sample in advance, compact sintering and texture formation of various kinds of oxide ceramic materials can be achieved,the sintering time is short, the efficiency is high, hardware investment is low, and the energy utilization rate is high; the preparation method has the advantages of a wide application range, a simple technology, a good energy saving effect and low cost. The preparation method is suitable for large-scale preparation of the oxide textured ceramic and has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of material technology, and relates to a method for preparing metal oxide textured ceramic materials by rapid sintering at normal temperature, in particular to a method for preparing various metal oxide textures by direct and rapid sintering at normal temperature without a heating furnace by using direct current thermal effect 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 It has common characteristics such as excellent performance, and has a wide range of applicat...

Claims

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Application Information

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Patent Type & Authority Applications(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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