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使用单边缺口拉伸试样对PZT-5压电铁电陶瓷进行恒载荷下的应力腐蚀研究,介质分别为水、甲醇和甲酰胺.结果表明,PZT 5压电陶瓷在这三种介质中均会发生应力腐蚀开裂.归一化应力腐蚀门槛应力强度因子分别为KISCC/KIC=0.66(水),0.73(甲醇)和0.75(甲酰胺),其中断裂韧性KIC=(1.34士0.25)MPa.m1/2.

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