Effect of Bond Coating Surface Morphology on the TBC System Lifetime

被引：0
作者：
Hervier, S. [1 ,2 ,3 ]
Desagulier, M. -M. [2 ]
Monceau, D. [2 ]
机构：
[1] SAFRAN, Moissy Cramayel, France
[2] CNRS, ENSIACET, CIRIMAT, INPT,UPS,ENSIACET, 4 allee Emile Monso, F-31030 Toulouse, France
[3] Ceram Coating Ctr, Chatellerault, France
来源：
HIGH TEMPERATURE CORROSION OF MATERIALS | 2024年 / 101卷 / 06期
关键词：
Pt-modified nickel aluminide; Surface roughness; High temperature oxidation; Grit blasting; Surface treatment; TBC; THERMAL BARRIER COATINGS; PHYSICAL VAPOR-DEPOSITION; CYCLIC-OXIDATION; ALUMINIDE; TEMPERATURE; DURABILITY; FAILURE; BEHAVIOR; STRESS; MODEL;
D O I：
10.1007/s11085-024-10302-6
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A study on the effect of bond coating (BC) surface modifications prior to ceramic deposition is presented. Grit blasting and polishing were used to modify the BC surface finish. Thermal barrier coating (TBC) systems were made of a commercial yttria-stabilized zirconia (YSZ) deposited by electron beam physical vapor deposition on a beta-(Ni,Pt)Al-coated Ni-based single crystal superalloy. Surface roughness measurements and scanning electron microscopy observations, before and after thermal cycling at 1100 degrees C, were performed to investigate the influence of the initial surface treatment on the YSZ/BC interface morphology and top coat spallation resistance. Surface states enhancing TBC spallation resistance have been found. In particular, it is shown that rumpling can be avoided even in the presence of phase transformations in the BC, by grinding samples with P600 SiC paper or by applying an "heavy" grit blasting leading to a thinner BC.
引用
收藏
页码：1437 / 1448
页数：12
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