Residual Stress Measurement of Plasma-Sprayed Coatings
Residual Stress Measurement of Plasma-Sprayed Coatings
复制标题
等离子喷涂涂层的残余应力测量
DOI：
10.1299/jsmea.46.590
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Yoshihiko Kashihara
中科院分区：
文献类型：
--
作者：
H. Waki;K. Ogura;I. Nishikawa;Yoshihiko Kashihara
本研究测量了等离子喷涂涂层、NiCr 合金、CoNiCrAlY 合金、Al2O3 陶瓷和 ZrO2-8%Y2O3 陶瓷的残余应力。采用带有应变仪的 SACHS 方法来测量残余应力。基材选用 304 型不锈钢和低碳钢。所得结果总结如下： 1）等离子喷涂涂层中产生残余拉应力。 2）陶瓷涂层的残余应力值较小，低于40MPa。 3）低碳钢基体上的金属合金涂层的拉伸残余应力值高于304型不锈钢基体上的拉伸残余应力值。 4) 低压等离子喷涂(LPPS) 涂层中的残余应力大于常压等离子喷涂(APS) 涂层中的残余应力。 5) 基材预热可有效降低涂层的残余拉应力。
Residual stresses of plasma sprayed coatings, NiCr alloy, CoNiCrAlY alloy, Al2O3 ceramics and ZrO2-8%Y2O3 ceramics, were measured in this study. SACHS method with a strain gauge was used to measure the residual stress. Type 304 stainless steel and mild steel were selected for the substrates. The results obtained were summarized as follows: 1) Tensile residual stresses were generated in plasma sprayed coatings. 2) The values of residual stress in ceramics coatings were relatively small and the values took lower than 40MPa. 3) Tensile residual stress values of metallic alloy coatings on mild steel substrates were higher than those on type 304 stainless steel substrates. 4) Residual stresses in Low Pressure Plasma Sprayed (LPPS)-coatings were larger than those in Atmospheric Plasma Sprayed (APS)-coatings. 5) Pre-heating of a substrate will effectively reduce tensile residual stress in a coating.