Oxidation and corrosion of silicon nitride at 1200°C and 1500°C

被引：1

作者：

Blugan, Gurdial ^{[1
]}

Wittig, Daniela ^{[1
]}

Zinz, Sieglinde ^{[1
]}

Graule, Thomas ^{[1
]}

Kuebler, Jakob ^{[1
]}

机构：

[1] Lan High Performance Ceram, Empa Swiss Fed Labs Mat Testing & Res, CH-8600 Dubendorf, Switzerland

来源：

HIGH-PERFORMANCE CERAMICS V, PTS 1 AND 2 | 2008年 / 368-372卷

关键词：

Si3N4; sintering additives; corrosion; high temperature;

D O I：

10.4028/www.scientific.net/KEM.368-372.885

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 effect of different sintering additives on the high temperature oxidation and corrosion behaviour of Si3N4 ceramics is investigated. A corrosion furnace was set up which allows testing of ceramic discs at test temperatures upto 1500 degrees C. It was possible to conduct tests under ambient oxygen conditions, or with increased water vapour as well as testing with corrosive gases such as HCl or SO2Si3N4 was prepared with MgO, Al2O3, Y2O3 and Al2O3+Y2O3 sintering additives. These discs were subjected to different oxidation and corrosion test conditions at temperatures of 1200 degrees C and 1500 degrees C for upto 128 h. The effects that the different corrosion environments have on the corrosion resistance of the Si3N4 materials are presented.

引用

页码：885 / 887

页数：3

共 5 条

[1] Corrosion of a dense, low-additive Si3N4 in high temperature combustion gases [J].