机构地区: 中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室
出 处: 《高压物理学报》 2002年第3期231-236,共6页
摘 要: 用石英计测量了PZT 95 5陶瓷在冲击波作用下发生铁电 -反铁电一级相变时产生的双波结构 ,相变起始压力约为 0 5GPa。对不同状态下的PZT 95 5陶瓷材料进行了扫描电镜电畴分析 ,结果表明 ,在该压力区域陶瓷发生了铁电 -反铁电相变。 Shock induced phase transition in PZT 95/5 ferroelectric ceramics was studied by using X cut quartz gauge. The stress profile measured shows definitely a two wave structure which indicates that the FE/AFE phase transition starts at stress about 0 5 GPa. SEM observations for the pre shock green samples, both polarized and un polarized, and for the post shock recovered samples provide clearly the unique microscopic features resulting from the transition.