Contribution from ferroelastic domain switching detected using X-ray diffraction to R-Curves in lead zirconate titanate ceramics
Contribution from ferroelastic domain switching detected using X-ray diffraction to R-Curves in lead zirconate titanate ceramics
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DOI：
10.1111/j.1151-2916.2001.tb01116.x
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发表时间：
2001-12-01
影响因子：
3.9
通讯作者：
Wroblewski, T
中科院分区：
文献类型：
--
作者：
Glazounov, AE;Kungl, H;Wroblewski, T
在具有不同矫顽力强度的Pb(Zr,Ti)O-3陶瓷中，利用x射线衍射测量了裂纹扩展过程中引起的铁弹性畴切换，并与r曲线行为进行了比较。建立了以下相关关系：在r曲线上，矫顽力越小的材料，畴切换量越大，韧性增量越大。从同步加速器源的x射线衍射测量的畴开关的空间分布中，确定了四种研究成分之一的过程区半宽度。其值为60-80 μ m，与断裂力学的估计结果吻合良好。
In Pb(Zr,Ti)O-3 ceramics, which are characterized by different magnitudes of coercive tensile stress, the ferroelastic domain switching induced during crack growth was measured using, X-ray diffraction, and was compared with the R-curve behavior. The following correlation was established: material with smaller coercive stress has a larger amount of domain switching, and a higher toughness increment in the R-curve. The, half-width of the process zone was determined for one of the, four studied compositions from the spatial distribution of domain switching measured using X-ray diffraction from, synchrotron source. Its value, 60-80 mum, was in good agreement with the estimate from fracture mechanics.