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Oxidation behaviour of particle reinforced MoSi 2 composites at temperatures up to 1700°C. Part II: Initial screening of the oxidation behaviour of MoSi 2 composites
Author(s) -
Lohfeld S.,
Schütze M.,
Böhm A.,
Güther V.,
Rix R.,
Scholl R.
Publication year - 2005
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.200403832
Subject(s) - materials science , composite material , particle (ecology) , geology , oceanography
Abstract In the first part of this paper a literature survey on the oxidation behaviour of MoSi 2 and MoSi 2 composites has been given. The present second part reports about the experimental results from oxidation tests with several MoSi 2 composites containing 15 vol.‐% Al 2 O 3 , Y 2 O 3 , ZrO 2 , HfO 2 , SiC, TiB 2 , ZrB 2 , or HfB 2 , respectively, from different development stages. The tests were conducted at 1600°C in air for 100 hours. It was shown that the production route of the powders has a significant influence on the performance of the materials at high temperatures. This was attributed to contaminations. Additionally, the results indicated that only the composites with SiC, ZrO 2 or HfO 2 , respectively, are suitable for application above 1500°C. A more detailed report about the optimised material will follow in the third part of this paper.