Elastic and inelastic effects in compression in plasma-sprayed ceramic coatings

Elastic and inelastic effects in compression in plasma-sprayed ceramic coatings
复制标题

等离子喷涂陶瓷涂层压缩时的弹性和非弹性效应

DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
K. Neufuss
K. Neufuss
中科院分区：
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文献类型：
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作者：
V. Harok;K. Neufuss

文献摘要

被引文献

相似文献

采用水稳定等离子喷枪在钛合金表面进行了常压等离子喷涂(APS)制备的锆英石涂层的四点弯曲试验。涂层材料的压缩力学行为是非线性的，包括滞后(最大应变的9%)和永久变形。对于非常小的应变，有效的面内杨氏模数约为13 Gpa，对于−0.18%的压缩应变，有效杨氏模数增加一倍。提出了解释这一现象的可能的微观机制，并推导了与等离子喷涂陶瓷涂层测试有关的一些通用协议。
Four-point bend tests of a plasma-sprayed zircon (ZrSiO4) coating are presented, the coating being prepared by atmospheric plasma spraying (APS) spraying onto a titanium alloy substrate, using a water-stabilized plasma (WSP) torch. The mechanical behavior in compression of the coating material is nonlinear, including hysteresis (9% of the maximum strain) and permanent deformation. The effective in-plane Young’s modulus is about 13 GPa for very small strains and doubles for a compressive strain of −0.18%. Possible micromechanisms to explain this behavior are proposed, and some general protocols concerning the testing of plasma-sprayed ceramic coatings are deduced.