OXIDATION BEHAVIOR OF MONOLITHIC TIN AND TIN DISPERSED IN CERAMIC MATRICES

被引：28

作者：

GOGOTSI, YG

PORZ, F

DRANSFIELD, G

机构：

[1] UNIV KARLSRUHE,INST KERAM MASCHINENBAU,W-7500 KARLSRUHE 1,GERMANY

[2] TIOXIDE GRP LTD,BILLINGHAM TS23 1PS,CLEVELAND,ENGLAND

来源：

OXIDATION OF METALS | 1993年 / 39卷 / 1-2期

关键词：

OXIDATION; TITANIUM NITRIDE; CERAMIC-MATRIX COMPOSITES; RUTILE; OXIDE LAYERS;

D O I：

10.1007/BF00666611

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The mechanism and kinetics of high-temperature (up to 1500-degrees-C) oxidation of pressureless-sintered TiN and hot-pressed silicon nitride-TiN, alumina-TiN, aluminum nitride-TiN, and AlON-TiN ceramic composites were studied in air under isothermal and nonisothermal conditions. Analysis of the oxidation products revealed the formation of rutile in the temperature range from 600 to 1000-degrees-C An interaction of TiO2 with the matrix and/or its oxidation products was observed at higher temperatures. The oxidation of TiN-containing composites shows different behavior depending on the temperature. The presence of fine isolated inclusions of TiN (< 30 mass %) in the silicon-nitride matrix does not change the mass gain during oxidation or increases it only slightly, as compared with a TiN-free material. For materials containing a continuous skeleton of TiN (> 30 mass %) a noticeable increase of the oxidation rate was observed.

引用

页码：69 / 91

页数：23

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