【题名】：Stress corrosion cracking and its anisotropy of a PZT ferroelectric ceramics中国科学通报：英文版论文(Stress corrosion cracking and its anisotropy of a PZT ferroelectric ceramicsZhongGuoKeXueTongBao：YingWenBanLunWen)
【关键词】：铁电陶瓷 各向异性 应力腐蚀碎裂 PZT 阈值应力强度因子
【keywords】：TieDianTaoCi GeXiangYiXing YingLiFuShiSuiLie PZT ZuoZhiYingLiQiangDuYinZi
【作者】：WANGYi CHUWuyang SUYanjing GAOKewei QIAOLijie 【来源】： 知识词典
【期刊名称】：中国科学通报：英文版(ZhongGuoKeXueTongBao：YingWenBan)
【国际标准刊号】：1001-6538 【国内统一刊号】：
【作者单位】：DepartmentofMaterialsPhysics,UniversityofScience＆TechnologyBeijing,Beijing100083,China(DepartmentofMaterialsPhysics,UniversityofScience＆TechnologyBeijing,Beijing100083,China)
【分类号】：TM286 O482.5 【页码】：-1203-1206 【出版年】：2003.2
【下载地址】：下载pdf全文
Stress corrosion cracking (SCC) of a PZT ferroeleetric ceramics in various media, such as moist atmosphere, silicon oil, methanol, water and formamide, and its anisotropy have been investigated at constant load test using a single-edge notched tensile specimen. The results showed that SCC could occur in all media, and the threshold stress intensity factor of SCC in water and formamide, KISCC,revealed anisotropy. The KISCC for poling direction parallel to the crack plane, KISCC^a, was greater than that perpendicular to the crack plane, KISCC^a similar to the anisotropy of fracture toughness KIC; however, the anisotropy factor of KISCC,which was KISCC^b=1.8 (in formamide) and 2.1 (in water), was larger than that of KIC, which is KIC/^a/KIC^b=1.4, The stress-induced 90° domain switching causes the anisotropy of KIC and KISCC, besides, the resistance of SCC also has anisotropy.
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