Control of instability of Si3N4 during pressureless sintering

被引：34

作者：

Wada, S

机构：

[1] Toyota Technol Inst, Nagakute, Aichi 4801192, Japan

[2] Toyota CRDL, Nagakute, Aichi 4801192, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2001年 / 109卷 / 10期

关键词：

decomposition; Si3N4; ceramics; sintering; SiO(g); sagger; air furnace;

D O I：

10.2109/jcersj.109.1274_803

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The instabilities of Si3N4 and Si3N4 ceramics during sintering are investigated. As a result of the instabilities, Si3N4 and Si3N4 ceramics lose their mass or decompose. The major mass loss reaction of Si3N4 ceramics is shown as follows. Si3N4 (S) + 3SiO(2)(1) = 6SiO(g) + 2N(2)(g) Regarding the mass loss, decreasing the sintering temperature by 30 K corresponds to an increase in N-2 pressure in the furnace by one order magnitude. By understanding well the mass loss phenomenon, Si3N4 ceramics will be produced commercially in 0.1 MPa N-2 gas or air.

引用

页码：803 / 808

页数：6

共 32 条

[1] The effect of sintering atmosphere on the phase composition and strength of silicon nitride [J].

Arató, P ;

Wéber, F .

SCIENCE OF ENGINEERING CERAMICS II, 1999, 2 :221-224

[2] SEGREGATION OF MG TO THE (0001) SURFACE OF DOPED SAPPHIRE [J].

BAIK, S ;

FOWLER, DE ;

BLAKELY, JM ;

RAJ, R .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1985, 68 (05) :281-286

[3]

Collins J.F., 1955, JOM, V7, P612, DOI [10.1007/BF03377548, DOI 10.1007/BF03377548]

[4]

Deeley G.G., 1961, Powder Metall, V4, P145, DOI [10.1179/pom.1961.4.8.011, DOI 10.1179/POM.1961.4.8.011]

[5]

GRESKOVICH C, 1981, J AM CERAM SOC, V64, pC96, DOI 10.1111/j.1151-2916.1981.tb09885.x

[6]

HATTORI T, UNPUB J CERAM SOC JA

[7]

HATTORI T, 2001, IN PRESS J CERAM SOC, V109

[8]

HEIDHARDT U, 1994, KEY ENG MATER, V89, P187

[9] VOLATILITY DIAGRAMS FOR SILICA, SILICON-NITRIDE, AND SILICON-CARBIDE AND THEIR APPLICATION TO HIGH-TEMPERATURE DECOMPOSITION AND OXIDATION [J].

HEUER, AH ;

LOU, VLK .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (10) :2789-2803

[10]

Hwang SL, 1997, J AM CERAM SOC, V80, P329, DOI 10.1111/j.1151-2916.1997.tb02834.x

← 1 2 3 4 →