Oxidation and lifetime of PYSZ and CeSZ coated Ni-base substrates with MCrAlY bond layers
Oxidation and lifetime of PYSZ and CeSZ coated Ni-base substrates with MCrAlY bond layers
复制标题
具有 MCrAlY 键合层的 PYSZ 和 CeSZ 涂层镍基基材的氧化和寿命
DOI：
10.1179/mht.2003.055
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发表时间：
2003
影响因子：
1.3
通讯作者：
K. Fritscher
中科院分区：
文献类型：
--
作者：
C. Leyens;U. Schulz;K. Fritscher
在100个叶片和带有NiCoCrAlY粘结层的CMSX-4样品中，用LPPS和EB-PVD技术在1120℃的燃烧器和1100℃的炉子中进行了循环测试。在所有情况下，CeSZ涂层变体的性能都优于PYSZ涂层对应物。CeSZ涂层样品的TGO生长动力学稍慢。寿命方面的好处主要归因于混合区氧化物，由于它们能够相互“润湿”，所以可以容忍尖晶石相的形成。因此，混合区中的气孔形成受到抑制，有利于裂纹钝化机制。
Abstract IN100 blades and CMSX-4 samples with NiCoCrAlY bond coats manufactured via LPPS and EB-PVD were cyclically tested in a burner rig at 1120°C and a furnace at 1100°C. Two different TBC chemistries were deposited by EB-PVD techniques: PYSZ and CeSZ. In all cases the performance of the CeSZ coated variances was superior to the PYSZ coated counterparts. TGO growth kinetics were slightly slower for the CeSZ coated samples. The benefits in lifetime are mainly attributed to the mixed zone oxides that tolerate spinel phase formation due to their ability to “wet” each other. Pore formation in the mixed zone is hereby suppressed favoring crack blunting mechanisms.