Measurement of quenching strain in paraffin drop test modelling thermal spray process
Measurement of quenching strain in paraffin drop test modelling thermal spray process
复制标题
模拟热喷涂过程中石蜡滴落试验中淬火应变的测量
DOI：
10.1299/transjsme.17-00377
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
H. Inoue
中科院分区：
文献类型：
--
作者：
Ayumitsu Amano;M. Sakaguchi;Y. Kurokawa;Y. Okajima;H. Inoue
为了研究热障涂层在热喷涂过程中残余应力产生的基本过程，利用石蜡进行了模型实验。将熔化的石蜡滴在430型不锈钢的圆形基底上，并在基底的背面测量应变和温度。模型实验表明，在凝固和粘附过程中会产生拉伸淬火应变，并且随着液滴数量的增加而增加。淬火应变的发展和石蜡涂层的失效受基体温度的显着影响。较低的基体温度导致较大的淬火应变，并有利于涂层的开裂、分层和脱粘。一系列模型实验的结果显示了热喷涂过程中实际现象的一些相似之处，将为优化热喷涂中的各种工艺参数提供有益的建议。
In order to investigate the fundamental process of residual stress development in thermal barrier coating during thermal spray, a model experiment was conducted using a paraffin wax. Melted paraffin wax was dropped onto a circular substrate of type 430 stainless steel, and strain and temperature were measured on the back surface of substrate. The model experiment revealed that tensile quenching strain was developed during solidification and adhesion process and it was increased with the number of droplets. Development of the quenching strain and failure of paraffin coating were significantly influenced by substrate temperature. The lower substrate temperature caused the larger quenching strain, and facilitated cracking, delamination and debonding of the coating. Findings in a series of the model experiments showed some similarities to actual phenomena during thermal spray, and will provide a helpful suggestion to optimize various process parameters in thermal spray.
影响因子：
3.9
作者：
Hongbo Guo;S. Kuroda;H. Murakami
通讯作者：
Hongbo Guo;S. Kuroda;H. Murakami
影响因子：
5.5
作者：
Ito K;Kuriki H;Araki H;Kuroda S;Enoki M
通讯作者：
Enoki M