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Al2O3陶瓷的氢致滞后断裂

HYDROGEN-INDUCED DELAYED FRACTURE OF ALUMINA CERAMICS

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【作者】 史博宿彦京乔利杰褚武扬

【Author】 SHI Bo, SU Yanjing, QIAO Lijie, CHU Wuyang Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083 Correspondent: SH Bo, Tel: (O10)623329O6, Fax: (010)62332345, E-mail: shibo@sina.com

【机构】 北京科技大学材料物理系北京科技大学材料物理系 北京100083北京100083北京100083

【摘要】 Al2O3封装陶瓷在恒载荷下动态充氢能发生氢致滞后断裂,其门槛应力强度因子为 KIH=0.71KIC(i=20 mA/cm2)及 0.45KIC(i=400 mA/cm2)氢致开裂区全是沿晶断口,而空拉断口则是沿晶和解理构成的混合断口.

【Abstract】 Hydrogen-induced delayed fracture could occur in alumina ceramics during dynamic charging under constant load. The threshold stress intensity factors were KIH=0.71KIC (i=20 mA/cm2) and 0.45KIC(i=400 mA/cm2), respectively. The fracture surface of hydrogen-induced delayed fracture was intergranular, but that of overloading fracture was mixed intergranular and transgranular.

【关键词】 Al2O3封装器件氢致开裂
【Key words】 aluminaceramicshydrogen-Induced delayed fracture
【基金】 国家重点基础研究资助项目G19990650
  • 【文献出处】 金属学报 ,Acta Metallrugica Sinica , 编辑部邮箱 ,2001年09期
  • 【分类号】TN304.82
  • 【下载频次】72
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