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Enhanced fracture toughness of silicon nitride ceramics at cryogenic temperatures

✍ Scribed by Weijiang Xue; Jian Yi; Zhipeng Xie; Wei Liu; Juan Chen

Book ID
113899450
Publisher
Elsevier Science
Year
2012
Tongue
English
Weight
550 KB
Volume
66
Category
Article
ISSN
1359-6462

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We measured the fracture strength and fracture toughness of ZrOa-based ceramics containing 14.5mo1%, 15.5mo1%, and 16.5mo1% CeO/at 298,77,and 4.2K.The results indicate that there is 56-117% increase in fracture toughness at 4.2K and 47.6-92% increase in fracture strength at 4.2K. The maximum increas