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A kind of high temperature resistant special ceramics containing cerium oxide and its preparation method

A special ceramic and cerium oxide-containing technology, which is applied in the field of special ceramic products, can solve problems such as high cost, complicated sintering process, and low heat-resistant temperature, and achieve an increase in heat-resistant temperature, reduce production costs, and reduce sintering temperature and sintering time Effect

Active Publication Date: 2016-03-02
铜陵市华冉科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional heat-resistant ceramics generally have low heat-resistant temperature, and the sintering process is complicated and costly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A high-temperature-resistant special ceramic containing cerium oxide, which is composed of the following raw materials by weight (kg): 16 burnt gems, 20 forsterite, 10 purple clay, 26 silicon carbide, 3 zirconium phosphate, 2.5 boron nitride, Manganese dioxide 1, cerium oxide 2, triethanolamine 4, sodium sulfate 2, molasses 3, calcium formate 1.5, polyvinyl alcohol 2, hydroxymethyl cellulose 1, sodium lignosulfonate 1, paraffin 3, deionized Appropriate amount of water.

[0018] A method for preparing high-temperature-resistant special ceramics containing cerium oxide, comprising the following steps

[0019] (1) Put coke gemstone, forsterite, silicon carbide, and boron nitride into a calciner, ablate for 2 hours, and ablate at a temperature of 400°C;

[0020] (2) Put the product obtained in step (1) into a pulverizer for pulverization, pass through an 80-mesh sieve, and put it into a ball mill, add triethanolamine and sodium bicarbonate, perform high-speed ball milling ...

Embodiment 2

[0028] A high-temperature-resistant special ceramic containing cerium oxide, which is composed of the following raw materials by weight (kg): coke gem 18, forsterite 22, purple clay 14, silicon carbide 28, zirconium phosphate 4, boron nitride 3.5, Manganese dioxide 2, cerium oxide 3, triethanolamine 5, sodium sulfate 3, molasses 4, calcium formate 2, polyvinyl alcohol 2.5, hydroxymethyl cellulose 1.5, sodium lignosulfonate 1.5, paraffin 4, deionized Appropriate amount of water.

[0029] A method for preparing high-temperature-resistant special ceramics containing cerium oxide, comprising the following steps

[0030] (1) Put coke gemstones, forsterite, silicon carbide, and boron nitride into a calciner, ablate for 1.5 hours, and ablate at a temperature of 450°C;

[0031] (2) Put the product obtained in step (1) into a pulverizer for pulverization, pass through a 100-mesh sieve, put it into a ball mill, add triethanolamine and sodium bicarbonate, and perform a high-speed ball m...

Embodiment 3

[0039] A high-temperature-resistant special ceramic containing cerium oxide, which is composed of the following raw materials in weight (kg): coke gem 20, forsterite 24, purple clay 16, silicon carbide 30, zirconium phosphate 5, boron nitride 4.5, Manganese dioxide 3, cerium oxide 4, triethanolamine 6, sodium sulfate 4, waste molasses 5, calcium formate 2.5, polyvinyl alcohol 3, hydroxymethyl cellulose 2, sodium lignosulfonate 2, paraffin 5, deionization Appropriate amount of water.

[0040] A method for preparing high-temperature-resistant special ceramics containing cerium oxide, comprising the following steps

[0041] (1) Put coke gemstone, forsterite, silicon carbide, and boron nitride into a calciner, ablate for 1 hour, and ablate at a temperature of 500°C;

[0042] (2) Put the product obtained in step (1) into a pulverizer for pulverization, pass through a 120-mesh sieve, put it into a ball mill, add triethanolamine and sodium bicarbonate, perform high-speed ball millin...

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PUM

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Abstract

The invention discloses a high-temperature-resistant special ceramic for a sparking nozzle of an oil-fired machine and a preparation method thereof. The special ceramic is composed of the following raw materials in parts by weight: 30-40 parts of andalusite, 22-28 parts of volcanic rock, 10-15 parts of diatomite, 15-25 parts of aluminium oxide, 3-6 parts of tantalum carbide, 2-4 parts of cerous sulfide, 6-12 parts of titanium oxide, 5-10 parts of magnesium oxide, 4-8 parts of zirconium oxide, 3-5 parts of polyvinylpyrrolidone, 2.5-4.5 parts of sodium hydroxypropyl oxidized starch succinate, 4-6 parts of sorbitan trioleate, 3-5 parts of coconut oil monoethanolamide, 2-4 parts of dispersing agent NNO, and proper amount of deionized water. A bowl mill is employed for preparing an ultrafine powder, addition of proper amount of titanium oxide and magnesium oxide helps to reduce the sintering temperature of a blank and save energy, and addition of proper amount of tantalum carbide and cerous sulfide helps to reduce the possibility of the ceramic nozzle being oxidized in a high-temperature environment. experiment measuring results show that the ceramic nozzle is resistant to a high temperature up to 2500 DEG C and has the density larger than 4.0 g / cm<3>, and the nozzle has the service life larger than 10000 h.

Description

technical field [0001] The invention relates to special ceramic products, in particular to a high-temperature-resistant special ceramic containing cerium oxide and a preparation method thereof. Background technique [0002] New technology fields such as aerospace, nuclear industry, new energy, national defense and military industry are in urgent need of a large number of new materials. Special ceramics have excellent heat resistance, dielectric properties, wear resistance, heat insulation properties, piezoelectric properties, The light transmission performance has been widely valued by various countries. Heat-resistant ceramics are one of the important branches. Traditional heat-resistant ceramics generally have a low heat-resistant temperature, and the sintering process is complicated and costly. Therefore there is an urgent need to improve it, reduce costs, allow it to be used in a wider range, and have stronger practicability. Contents of the invention [0003] The o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/622
Inventor 倪娟形
Owner 铜陵市华冉科技服务有限公司
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