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| HOT CORROSION BEHAVIOR OF Ni--Co--Cr--Al--Y--Si--B COATING DEPOSITED BY AIP |
| WANG Qimin; WU Yingna; KE Peiling; JI Ailing; SUN Chao; HUANG Rongfang; WEN Lishi |
| State Key Laboratory for Corrosion and Protection; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110016 |
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Cite this article:
WANG Qimin; WU Yingna; KE Peiling; JI Ailing; SUN Chao; HUANG Rongfang; WEN Lishi. HOT CORROSION BEHAVIOR OF Ni--Co--Cr--Al--Y--Si--B COATING DEPOSITED BY AIP. Acta Metall Sin, 2004, 40(4): 399-403 .
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Abstract Ni--Co--Cr--Al--Y--Si--B coatings were deposited on Ni base superalloys
DZ125 and DSM11 by arc ion plating (AIP). The corrosion behaviors of DZ125, DSM11 and Ni--Co--Cr--Al--Y--Si--B coating in molten
75%Na2SO4+25%K2SO4 at 900℃ were studied. The results indicate that the coating can protect the DZ125 and DSM11 alloys from hot corrosion destruction due to the formation of a
continuous and dense α--Al2O3$ scale. In the last stage of the hot corrosion process, the hot corrosion behaviors of base alloys have
important influences on behaviors of the whole systems.
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Received: 10 April 2003
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