Interaction of molten silicates with thermal barrier coatings under temperature gradients
Interaction of molten silicates with thermal barrier coatings under temperature gradients
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DOI：
10.1016/j.actamat.2015.01.038
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发表时间：
2015-05
期刊：
影响因子：
9.4
通讯作者：
R. W. Jackson;E. Zaleski;David L. Poerschke;T. HazelBrian;M. Begley;C. Levi
中科院分区：
文献类型：
--
作者：
R. W. Jackson;E. Zaleski;David L. Poerschke;T. HazelBrian;M. Begley;C. Levi
本文研究了温度梯度对硅酸盐沉积物和热障涂层（TBC）系统之间相互作用的影响。专用测试设备采用 CO2 激光器在涂层和底层基材上施加可控的热梯度，用于研究两种硅酸盐成分与最先进的 7YSZ EB-PVD TBC 之间的相互作用。然后，实验结果用于指导表达式的开发，这些表达式描述 TBC 中硅酸盐渗透的性质、涂层弹性模量的演变以及应力的产生和释放。
This paper examines the effect of temperature gradients on the interaction between silicate deposits and thermal barrier coating (TBC) systems. A dedicated test facility, in which a CO2laser is employed to impose a controllable thermal gradient through the coating and underlying substrate, is used to investigate the interaction between two silicate compositions with state-of-the-art 7YSZ EB-PVD TBCs. The experimental results are then used to guide the development of expressions that describe the nature of silicate infiltration in the TBCs, the evolution of coating elastic modulus, and the generation and release of stresses.