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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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BaTiO3单晶压痕裂纹的畴变和裂纹扩展的原位观察
, PP. 1274-1278
Keywords: BaTiO3单晶,瞬时电场,恒电场
Abstract:
金相显微镜原位观察了面内极化的BaTiO3单晶在瞬时电场作用下的畴变和裂纹形核、扩展的关系以及未极化BaTiO3单晶在恒电场下Vickers压痕裂纹扩展和电致畴变的关系.结果表明,畴变是裂纹形核、扩展的先决条件,但不存在直接的关系.在恒电场下,未极化的BaTiO3单晶卸载压痕裂纹的滞后扩展可以导致畴变区的扩大.
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