Application of double-layer composition of silicon nitride ceramic and glass material in engine

A technology of silicon nitride ceramics and glass materials, which is applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of incomplete combustion of oil and complete removal of carbon dioxide, low temperature of metal engine cylinders, etc.

Inactive Publication Date: 2021-10-26
SHENZHEN QIANHAIFA NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] 4. Today's metal engine and gas turbine industry technology in the field of automobiles, ships, aircraft, diesel, coal and natural gas power generation has caused the temperature in the cylinder of the metal engine to be very low, which cannot fully burn the oil and completely remove carbon dioxide. technical issues of gas

Method used

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Examples

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Effect test

Embodiment 1

[0037] Application of a double-layer composition of silicon nitride ceramic and glass material in an engine, the inner layer is a layer of silicon nitride ceramic material in contact with the piston, and its thermal expansion from 0-40°C to 900°C rate is equal to or lower than 5 (×10-6 / ℃); the outer layer is a glass material layer wrapped with a silicon nitride ceramic material layer, which: thermal conductivity is less than 5w / [(m.K)], thermal diffusion rate less than 5mm 2 / S, its thermal expansion rate from 0-40°C to 800°C is equal to or lower than 8 (×10-6 / °C), its softening point temperature is greater than 800°C, calculated by weight percentage, and the alumina content is 1-46 %, the content of magnesium oxide is 0-15%, the content of silicon oxide is 30-82%, the content of calcium oxide is 0-15%, and the content of boron oxide is 0-15%.

[0038] The double layer composition of silicon nitride ceramics and glass material of embodiment 1 has following 6 kinds of properti...

Embodiment 2

[0057] Application of a double-layer composition of silicon nitride ceramic and glass material in an engine, the inner layer is a silicon nitride ceramic material layer in contact with the piston, and its thermal expansion from 0-40°C to 1200°C The rate is equal to or lower than 6 (×10-6 / ℃); the outer layer is a glass material layer wrapped with a silicon nitride ceramic material layer, and its thermal conductivity is less than 5w / [(m.K)], thermal diffusion rate less than 5mm 2 / S, its thermal expansion rate from 0-40°C to 800°C is equal to or lower than 8(×10-6 / °C), its softening point temperature is >1100°C, calculated by weight percentage, and the alumina content is 30-46 %, the content of magnesium oxide is 0-15%, the content of silicon oxide is 30-82%, the content of calcium oxide is 0-15%, and the content of boron oxide is 0-15%.

[0058] The double layer composition of silicon nitride ceramics and glass material of embodiment 2 has following 6 kinds of properties simul...

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Abstract

The invention discloses an application of a double-layer composition of a silicon nitride ceramic and a glass material in an engine; an inner layer is a silicon nitride ceramic material layer in contact with a piston, and the thermal expansion rate of the silicon nitride ceramic material layer is equal to or lower than 5 (*10<-6 > / DEG C) when the temperature rises to 900 DEG C from 0-40 DEG C; the outer layer is a glass material layer wrapped with a silicon nitride ceramic material layer, the heat conductivity coefficient of the outer layer is smaller than 5 w / [(m*K)], the thermal diffusivity of the outer layer is smaller than 5 mm<2> / S, the thermal expansion rate of the outer layer is equal to or lower than 8(*10<-6> / DEG C) when the temperature of the outer layer rises to 800 DEG C from 0-40 DEG C, and the softening point temperature of the outer layer is higher than 800 DEG C. The outer layer comprises, in percentage by weight, 1-46% of aluminum oxide, 0-15% of magnesium oxide, 30-82% of silicon oxide, 0-15% of calcium oxide, and 0-15% of boron oxide. The double-layer composition can promote the progress of the engine and gas turbine industry, greatly enhance the heat efficiency, greatly enhance the horsepower of the engine under the same fuel oil, greatly save the energy, greatly reduce the carbon emission, and generate the new trend of slowing down the global warming.

Description

technical field [0001] The present invention relates to the invention field of combination invention and technical element (especially position element) change invention, and the invention field of application in engine, especially relates to a double-layer composition of silicon nitride ceramic and glass material in engine Applications. [0002] Existing glass materials, ceramic materials, natural mineral materials, metal materials, glass-ceramic materials and various prior art product solutions cannot simultaneously have the following 6 properties: [0003] A. Performance of low coefficient of friction; B. Low thermal diffusivity mm 2 The performance representation of / S (that is, the ability of the object to tend to be uniform in temperature during heating or cooling is the property of good thermal shock resistance); C. The property of preventing heat energy loss with low thermal conductivity; D. The property of low thermal expansion rate ; E. High softening point (deform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/63C04B32/00F01D5/28F01D25/14
CPCC04B2235/9607C04B35/584C03C14/004C03C12/00F02F1/00F01D25/24C04B2235/36
Inventor 杨德宁
Owner SHENZHEN QIANHAIFA NEW MATERIAL TECH CO LTD
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