Behavior of Ultrahigh-Temperature ZrB2-Based Ceramics in Oxidation

被引：0
|
作者：
O. N. Grigoriev
I. P. Neshpor
T. V. Mosina
V. B. Vinokurov
A. V. Koroteev
O. V. Buriachek
D. V. Vedel
A. N. Stepanchuk
L. Silvestroni
机构：
[1] National Academy of Sciences of Ukraine,Frantsevich Institute for Problems of Materials Science
[2] Ivchenko-Progress Machine-Building Design Office,undefined
[3] National Technical University “Igor Sikorsky Kyiv Polytechnic Institute”,undefined
[4] Institute of Science and Technology for Ceramics,undefined
来源：
Powder Metallurgy and Metal Ceramics | 2018年 / 56卷
关键词：
oxidation; ultrahigh-temperature ceramics; zirconium diboride; temperature cycling test;
D O I：
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中图分类号：
学科分类号：
摘要：
Ultrahigh-temperature ZrB2-based ceramics with different sintering additions was developed for extreme conditions. Its strength characteristics, phase composition, and structure were examined. The ceramics was oxidized in air at 1250 and 1550°C. In addition, the most stable composites were subjected to temperature cycling in a flow of aviation fuel combustion products in a temperature range of 1400–1500°C. All materials show high oxidation resistance. The method used to produce samples influences their oxidation behavior: materials produced by vacuum hot pressing show higher oxidation resistance than those produced by hot pressing in a CO–CO2 atmosphere, probably because of their higher final density. The best results were obtained when ZrB2 sintering was combined with introduction of MoSi2 and CrB2.
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页码：573 / 580
页数：7
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