Title of article :
Oxidation-resistant ZrB2–SiC composites at 2200 °C
Author/Authors :
Jiecai Han، نويسنده , , Ping Hu، نويسنده , , Xinghong Zhang، نويسنده , , Songhe Meng، نويسنده , , Wenbo Han، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
8
From page :
799
To page :
806
Abstract :
Oxidation resistance tests were carried out on hot-pressed ZrB2–20 vol%SiC using an oxyacetylene torch. The temperature of the oxidized specimens exceeded 2200 °C. The mass and linear oxidation rates of the ZrB2–20 vol%SiC composites for 10 min were −0.23 mg/s and 0.66 μm/s, respectively. The surface layer appeared dense and adherent with the exception of a few burst bubbles and craterlets. No macro-cracks or spallation were detected after oxidation, suggesting that these composites possess a super oxidation resistance. The microstructure of the surface and cross-section of the oxidized specimens were studied by scanning electron microscopy along with energy dispersive spectrometry and X-ray diffraction. The oxidation mechanism was also discussed.
Keywords :
A. ZrB2 , A. Ultra-high-temperature ceramic (UHTC) , B. Oxidation resistance , A. SiC
Journal title :
COMPOSITES SCIENCE AND TECHNOLOGY
Serial Year :
2008
Journal title :
COMPOSITES SCIENCE AND TECHNOLOGY
Record number :
1040715
Link To Document :
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