OXIDATION BEHAVIOR OF RARE-EARTH DISILICATE SILICON-NITRIDE CERAMICS

被引：114

作者：

CINIBULK, MK

THOMAS, G

JOHNSON, SM

机构：

[1] LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720

[2] UNIV CALIF BERKELEY,DEPT MAT SCI & MINERAL ENGN,BERKELEY,CA 94720

[3] SRI INT,MAT RES LAB,MENLO PK,CA 94025

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1992年 / 75卷 / 08期

关键词：

D O I：

10.1111/j.1151-2916.1992.tb04463.x

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 oxidation behavior and microstructure of the oxidized surfaces of RE2Si2O7-Si3N4 ceramics were investigated. The high oxidation resistance of these materials at 1400-degrees-C is attributed to the minimization of amorphous phases via devitrification to disilicates that are in equilibrium with SiO2, the oxidation product of Si3N4. Crystals of RE2Si2O7 grew out of the surface silicate in prefered orientations that were dictated by crystal structure. The morphology of the microstructure of the oxidized surfaces was shown to be partially dependent on the concentration of impurities; the presence of Ca was found to coincide with the growth of Gd2Si2O7 and Dy2Si2O7 crystals with high aspect ratios.

引用

页码：2044 / 2049

页数：6

共 19 条

[1] OXIDATION OF SILICON-NITRIDE HOT-PRESSED WITH CERIA
BABINI, GN
BELLOSI, A
VINCENZINI, P
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1981, 64 (10) : 578 - 584
[2] FACTORS INFLUENCING STRUCTURAL EVOLUTION IN THE OXIDE OF HOT-PRESSED SI3N4-Y2O3-SIO2 MATERIALS
BABINI, GN
BELLOSI, A
VINCENZINI, P
[J]. JOURNAL OF MATERIALS SCIENCE, 1984, 19 (11) : 3487 - 3497
[3] FABRICATION AND SECONDARY-PHASE CRYSTALLIZATION OF RARE-EARTH DISILICATE SILICON-NITRIDE CERAMICS
CINIBULK, MK
THOMAS, G
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1992, 75 (08) : 2037 - 2043
[4] Cotton F., 1988, ADV INORGANIC CHEM
[5] The Rate Controlling Process in the Oxidation of Hot Pressed Silicon Nitride
Cubicciotti, D.
Lau, K. H.
Jones, R. L.
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1977, 124 (12) : 1955 - 1956
[6] KINETICS OF OXIDATION OF HOT-PRESSED SILICON-NITRIDE CONTAINING MAGNESIA
CUBICCIOTTI, D
LAU, KH
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1978, 61 (11-1) : 512 - 517
[7] DREW RAL, 1981, P BR CERAM SOC, V31, P119
[8] POLYMORPHISM AND CRYSTAL DATA OF RARE-EARTH DISILICATES OF TYPE RE2SI2O7
FELSCHE, J
[J]. JOURNAL OF THE LESS-COMMON METALS, 1970, 21 (01): : 1 - +
[9] POLYMORPHS OF RARE-EARTH PYROSILICATES RE2SI2O7[RE-LA CE PR ND SM]
FELSCHE, J
HIRSIGER, W
[J]. JOURNAL OF THE LESS-COMMON METALS, 1969, 18 (02): : 131 - &
[10] ITO J, 1968, AM MINERAL, V53, P1940

← 1 2 →