Title:
USE OF LOW-THERMAL-DIFFUSIVITY LOW-FRICTIONAL-COEFFICIENT LOW-THERMAL-CONDUCTIVITY LOW-THERMAL-EXPANSION SILICON NITRIDE GLASS COMPOSITE MATERIAL IN ENGINE
Document Type and Number:
WIPO Patent Application WO/2022/057654
Kind Code:
A1
Abstract:
The use of a low-thermal-diffusivity low-frictional-coefficient low-thermal-conductivity low-thermal-expansion silicon nitride glass composite material in an engine, wherein the silicon nitride glass composite material comprises glass powder particles and silicon nitride powder particles; the glass powder particles are bonded to and cover the silicon nitride ceramic powder particles by means of sintering; the composite material has a thermal expansion rate equal to or less than 6.5(×10-6/ºC) during rising from 0-40ºC to 860ºC, a softening temperature of more than 860ºC, and a total content of silicon nitride of 20-90%; the content of glass and silicon-based crystalline materials is 8-80%; and the glass powder particles have an aluminium oxide content of 4-54%, a magnesium oxide content of 0-15%, a silicon oxide content of 30-82%, a calcium oxide content of 0-15%, and a boron oxide content of 0-15%. The present invention can greatly save energy, reduce carbon emissions, improve thermal efficiency, and effectively slow down global climate warming.
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Inventors:
YANG DENING (CN)
Application Number:
PCT/CN2021/116667
Publication Date:
March 24, 2022
Filing Date:
September 06, 2021
Export Citation:
Assignee:
SHENZHEN QIANHAIFA NEW MATERIAL TECH CO LTD (CN)
International Classes:
C04B35/622; F01D5/28
Foreign References:
| CN111499189A | 2020-08-07 | |||
| CN110028246A | 2019-07-19 | |||
| EP1118595A2 | 2001-07-25 | |||
| US5256603A | 1993-10-26 |
Other References:
ZHOU XIYA,YAO LILI,ZHOU BINYANG,HU JUN: "RESEARCH ON PREPARATION OF Si3N4 AND GLASS-CERAMIC COMPOSITE", CHINA CERAMICS, vol. 46, no. 7, 5 July 2010 (2010-07-05), pages 33 - 35, XP055912050, ISSN: 1001-9642, DOI: 10.16521/j.cnki.issn.1001-9642.2010.07.005
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