High-temperature-resistant special ceramic for sparking nozzle of oil-fired machine and preparation method thereof

A technology of special ceramics and high temperature resistance, which is applied in the field of high temperature resistant special ceramics for fuel engine ignition nozzles and its preparation. energy effect

Active Publication Date: 2015-03-11
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 short heat-resistant time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A high-temperature-resistant special ceramic for ignition nozzles of fuel engines, which is composed of the following raw materials in weight (kg): 30 andalusite, 22 volcanic rocks, 10 diatomite, 15 aluminum oxide, 3 tantalum carbide, 2 cerium sulfide, Titanium 6, magnesium oxide 5, zirconium oxide 4, polyvinylpyrrolidone 3, sodium hydroxypropyl oxidized starch succinate 2.5, sorbitan trioleate 4, cocoyl monoethanolamine 3, sodium methylene dinaphthalene sulfonate 2. Appropriate amount of deionized water.

[0016] A method for preparing high-temperature-resistant special ceramics for ignition nozzles of fuel engines, comprising the following steps:

[0017] (1) Put andalusite, volcanic rock, diatomite, aluminum oxide, tantalum carbide, cerium sulfide, titanium oxide, magnesium oxide, and zirconium oxide into the calciner, ablate for 2 hours, and ablate at a temperature of 680°C;

[0018] (2) Put the product obtained in step (1) into a pulverizer for pulverization, put ...

Embodiment 2

[0024] A high-temperature-resistant special ceramic for a fuel engine ignition nozzle, which is composed of the following raw materials in parts by weight: andalusite 35, volcanic rock 26, diatomite 12, aluminum oxide 20, tantalum carbide 4, cerium sulfide 3, titanium oxide 8 , Magnesium oxide 7, Zirconia 6, Polyvinylpyrrolidone 4, Hydroxypropyl oxidized starch succinate sodium 3.5, Sorbitan trioleate 5, Cocoyl monoethanolamine 4, Sodium methylene dinaphthalene sulfonate 3, Appropriate amount of deionized water.

[0025] A method for preparing high-temperature-resistant special ceramics for ignition nozzles of fuel engines, comprising the following steps:

[0026] (1) Put andalusite, volcanic rock, diatomite, aluminum oxide, tantalum carbide, cerium sulfide, titanium oxide, magnesium oxide, and zirconium oxide into the calciner, ablate for 1.5 hours, and ablate at a temperature of 720°C;

[0027] (2) Put the product obtained in step (1) into a pulverizer for pulverization, pa...

Embodiment 3

[0033] A high-temperature-resistant special ceramic for ignition nozzles of fuel engines, which is composed of the following raw materials in weight (kg): andalusite 40, volcanic rock 28, diatomite 15, aluminum oxide 25, tantalum carbide 6, cerium sulfide 4, oxide Titanium 12, Magnesium Oxide 10, Zirconia 8, Polyvinylpyrrolidone 5, Sodium Hydroxypropyl Oxidized Starch Succinate 4.5, Sorbitan Trioleate 6, Cocoyl Monoethanolamine 5, Sodium Methylene Dinaphthalene Sulfonate 4. Appropriate amount of deionized water.

[0034] A method for preparing high-temperature-resistant special ceramics for ignition nozzles of fuel engines, comprising the following steps:

[0035] (1) Put andalusite, volcanic rock, diatomite, aluminum oxide, tantalum carbide, cerium sulfide, titanium oxide, magnesium oxide, and zirconium oxide into the calciner, ablate for 1 hour, and ablate at a temperature of 760°C;

[0036] (2) Put the product obtained in step (1) into a pulverizer for pulverization, pass ...

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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 a special ceramic product, in particular to a high-temperature-resistant special ceramic for a fuel engine ignition nozzle 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 a short heat-resistant time. Therefore, it is urgently needed to improve it so that it can be used in a wider range and its practicability becomes stronger. Contents of the invention [0003] The object of the pres...

Claims

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Application Information

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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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