Oxidation resistance of SiC ceramics prepared by different proceessing routes
作者： Alexandra Kovalčíková , Jaroslav Sedláček , Zoltán Lenčéš , Roman Bystrický , Ján Dusza
DOI: 10.1016/J.JEURCERAMSOC.2016.03.016
关键词:
摘要: Abstract The oxidation behaviour at 1350–1450 °C/0–204 h of SiC ceramics was investigated as a function the processing route. were prepared by rapid hot-pressing granulated powder without any oxide sintering additives. This method allows decreasing temperature around 200 °C than that conventionally used. Additive free hot pressed show better resistance compared to liquid phase sintered (the parabolic rates are about three orders magnitudes lower). new way an interesting combination properties like high Vickers hardness 27.4 GPa, good fracture toughness 3.42 MPa m1/2, together with excellent (4.91 × 10−5 mg2/cm4h 1450 °C).
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