Influence of Subsurface Layer on the Indentation Damage Behavior of YSZ Thermal Barrier Coating Layers Deposited by Electron Beam Physical Vapor Deposition

被引:1
作者
Heo, Yong Suk [1 ]
Park, Sang Hyun [1 ]
Han, In Sub [2 ]
Woo, Sang Kuk [2 ]
Jung, Yeon Gil [3 ]
Paik, Ungyu [4 ]
Lee, Kee Sung [1 ]
机构
[1] Kookmin Univ, Sch Mech & Automot Engn, Seoul 136702, South Korea
[2] Korea Inst Energy Res, Convergence Mat Res Ctr, Daejeon 305343, South Korea
[3] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, South Korea
[4] Hanyang Univ, Div Adv Mat Sci Engn, Seoul 133791, South Korea
关键词
Thermal barrier coating; Indentation; Yttria stabilized zirconia; Subsurface;
D O I
10.4191/kcers.2008.45.9.549
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The thermal barrier coating must withstand erosion when subjected to flowing gas and should also maintain good stability and mechanical properties while it must also protect the turbine component from high temperature, hot corrosion, creep, and oxidation during operation. In this study we investigated the influence of subsurface layer, Al2O3 or NiCrCoAlY bond coat layer, on the indentation damage behavior of YSZ thermal barrier coating layers deposited by electron beam physical vapor deposition (EB-PVD). The bond coat is deposited using different process such as air plasma-spray (APS) or spray of high velocity oxygen fuel (HVOF) and the thickness is varied. Hertzian indentation technique is used to induce micro damages on the coated layer. The stress-strain behaviors are characterized by results of the indentation tests.
引用
收藏
页码:549 / 555
页数:7
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