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陈林聪,张 弛,杨志刚.铼对CoNiCrAlY涂层合金抗热腐蚀性能的影响[J].稀有金属材料与工程(英文),2010,39(2):243~248.[Chen Lincong,Zhang Chi,Yang Zhigang.Influence of Rhenium on Hot Corrosion Resistance of CoNiCrAlY Coating Alloys[J].Rare Metal Materials and Engineering,2010,39(2):243~248.]
Influence of Rhenium on Hot Corrosion Resistance of CoNiCrAlY Coating Alloys
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Received:August 24, 2009  
DOI:
Key words: CoNiCrAlY alloy  high-temperature hot corrosion  internal oxidation
Foundation item:清华大学骨干人才支持计划; 教育部留学中心留学回国基金
Author NameAffiliation
Chen Lincong Tsinghua University, Beijing 100084, China 
Zhang Chi  
Yang Zhigang  
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Abstract:
      The effects of 3%-5% rhenium addition (mass fraction, similarly hereinafter) on the high-temperature corrosion resistance of CoNiCrAlY alloys were evaluated at 1000 ℃ by means of XRD, SEM and EDS. It is shown that there is an internal oxidation whether the rhenium is added to the alloy or not. The addition of rhenium can reduce the thickness of Al-depletion zone, stabilize the α-Cr(Re) phase and benefit the formation of Cr2O3 oxide scale which separates the base material from the molten salt and prevents from high-temperature corrosion