Promising Lead-free Piezoelectric Ceramics: (Li, Na, K)(Nb, Ta)O3 Modified by BaZrO3

来源 :The 5th International Congress on Ceramics, ICC5(第五届国际陶瓷大会) | 被引量 : 0次 | 上传用户:fox007138
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  Legislation arising from health and environmental concerns has intensified research into finding suitable alternatives to lead-based piezoceramics.Lead zirconate titanate(PZT)has been developed over several decades to become the market-leading piezoelectric ceramic.Recently,solid solutions based on sodium potassium niobates(K,Na)NbO3(KNN)has become one of the global-desired lead-free counterpart,due to its superior dielectric and piezoelectric properties.
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摘要:初中数学是逻辑性、抽象性极强的一门学科,而几何是数学教学的难点。采用科学、合理的几何教学方法,能激发学生学习几何兴趣,调动学生学习积极性,提升课堂教学效率,有效地培养学生的创造性思维。本文结合几何初中数学教学内容与特点,对几何教学方法展开探究。  关键词:初中数学;几何教学;方法  中图分类号:G633.6 文献标识码:A 文章编号:1992-7711(2017)02-0016  在新课标下
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