金属学报  2006, Vol. 42 Issue (12): 1274-1278

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BaTiO3单晶压痕裂纹的畴变和裂纹扩展的原位观察

王瑞敏;褚武扬;宿彦京;高克玮;乔利杰

石家庄铁道学院材料科学与工程分院

In Situ Observation of Relativity between Domain and Indentation Crack Propagating in Barium Titanate Single Crystal

天津科技大学

王瑞敏; 褚武扬; 宿彦京; 高克玮; 乔利杰 . BaTiO3单晶压痕裂纹的畴变和裂纹扩展的原位观察[J]. 金属学报, 2006, 42(12): 1274-1278 .

摘要 参考文献 相关文章 Metrics 全文: PDF(1957 KB)   摘要: 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. 关键词 ： BaTiO3单晶,  瞬时电场,  恒电场     Abstract：Instant electric field-induced 90 domain switching, crack initiation and propagation in a poled BaTiO3 single crystal, as well as sustained field-induced indentation crack propagation and 90 domain switching in an unpoled BaTiO3 single crystal have been investigated in situ using optical microscopy. The results show that 90 domain switching is a prerequisite for instant field-induced crack initiation and propagation, but that is no direct relation between the site of crack initiation and propagation and the domain switching zones. Delayed propagation of unloaded indentation crack under sustained field can result in enlargement of the indent ation-induced 90 domain switching zones. Key words： 收稿日期: 2006-03-14      ZTFLH:  TG113.2   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 王瑞敏 褚武扬 宿彦京 高克玮 乔利杰 44.8K 链接本文: https://www.ams.org.cn/CN/Y2006/V42/I12/1274 [1] Yang W, Fang F, Tao M. Int J Solids Struct, 2001; 38: 2203 [2] Busche M J, Hsia K J. Scr Mater, 2001; 44: 207 [3] Fang F, Yang W. Mater Lett, 2002; 57: 198 [4] Li F X, Li S, Fang D N. Mater Sci Eng, 2005, B120: 119 [5] Zhao X W, Chu W Y, Su Y J, Li J X, Gao K W, Qiao L J. Acta. Metall Sin, 2006; 42: 13 (赵显武,褚武扬,宿彦京,李金许,高克玮,乔利杰．金属学报,2006;42:13) [6] Chung H T, Shin B C, Kim H G. J Am Ceram Soc, 1989; 72: 327 [7] Wang Y, Chu W Y, Gao K W, Su Y J, Qiao L J. Appl Phys Lett, 2003; 82: 1583 [8] Chantikul P, Anstis G R, Laun B R, Marshall D B. J Am Ceram Soc, 1981; 64: 539 [9] Fang F, Yang W. Mater Lett, 2000; 46: 131 [10] Zhu T, Yang W. Mech Phys Solids, 1999; 47: 81 [11] Zhang T Y, Wang T H, Zhao M H. Acta Mater, 2003; 51: 4881 [12] Wang R M, Chu W Y, Gao K W, Su Y J, Qiao L J. Mater Lett, 2004; 58: 1811 [1] 姜冰; 白杨; 禇武扬; 乔利杰; 宿彦京 . 湿度对恒电场下BaTiO3单晶中畴变的影响[J]. 金属学报, 2008, 44(9): 1090-1094 . [2] 赵显武; 褚武扬; 宿彦京; 李金许; 高克玮; 乔利杰 . 恒应力下BaTiO3单晶压痕裂纹的滞后扩展和畴变[J]. 金属学报, 2006, 42(1): 13-18 . [3] 王瑞敏; 褚武扬; 宿彦京; 高克玮; 乔利杰 . 浸蚀促进BaTiO3单晶的畴变和裂纹扩展的研究[J]. 金属学报, 2005, 41(3): 297-301 . [4] 王瑞敏; 宿彦京; 高克玮; 乔利杰; 褚武扬 . 恒电场下BaTiO3陶瓷压痕裂纹的滞后扩展[J]. 金属学报, 2004, 40(11): 1175-1178 . Viewed Full text Abstract Cited   Shared      Discussed