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王亚军,马欣新,马瑞,唐光泽,刘玲.LaMgAl11O19涂层的CMAS侵蚀行为研究[J].稀有金属材料与工程(英文),2021,50(8):2927~2932.[Yajun Wang,Xinxin Ma,Rui Ma,Guangze Tang and Ling Liu.Corrosion Behavior of CMAS on LaMgAl11O19 Coating[J].Rare Metal Materials and Engineering,2021,50(8):2927~2932.]
Corrosion Behavior of CMAS on LaMgAl11O19 Coating
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Received:September 04, 2020  
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Key words: LaMgAl11O19  CMAS  corrosion product  kinetic curve
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Yajun Wang,Xinxin Ma,Rui Ma,Guangze Tang and Ling Liu  
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Abstract:
      The LaMgAl11O19 was prepared by air plasma spraying technology to investigate the corrosion behavior of 38CaO-5MgO-8AlO1.5-49SiO2 (CMAS) on high temperature. The microstructure, element distribution and phase composition of LaMgAl11O19 coating before and after CMAS corrosion were investigated. The results show that CaAl2Si2O8 and MgAl2O4 can be observed in LaMgAl11O19 coating after corroded at 1250 ℃ for 24 h. Besides, according to the thickness of corroded zone in LaMgAl11O19 coating, the apparent activation energy in the temperature range of 1050~1250 ℃ is 94.1 kJ/mol.