EFFECT OF ALUMINIZING ON THE HOT CORROSION RESISTANCE OF THE SPUTTERED CoCrAlY COATING

J Chin Soc Corr Pro

1991, Vol. 11

Issue (2): 181-187 DOI:

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EFFECT OF ALUMINIZING ON THE HOT CORROSION RESISTANCE OF THE SPUTTERED CoCrAlY COATING

Lou Hanyi Wang Fuhui Bai Linxiang (Institute of Corrosion and Protection of Metals; Academia Sinica)

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Abstract The hot corrosion behaviour of Co-30Cr-6Al-0. 5Y coating produced by magnetron sputtering deposition and that of the said coating with subsequent aluminizing have been investigated in sulphate melt,but its hot corrosion resistance in molten salts. The results show that the CoCrAlY coating possesses excellent hot corrosion resistance in sulphate melt,but its hot corrosion resistance in molten salts containing NaCl is reduced severely after 100 hrs. With subsequent aluminizing of the CoCrAlY coating its resistance to hot corrosion is only slightly reduced in sulphates melt and is remarkably improved in salt melt containing NaCl. The different influence factors of aluminizing on the hot corrosion resistance of the CoCrAlY coatings in various salt melts have been discussed.

Received: 25 April 1991

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Lou Hanyi Wang Fuhui Bai Linxiang (Institute of Corrosion and Protection of Metals; Academia Sinica). EFFECT OF ALUMINIZING ON THE HOT CORROSION RESISTANCE OF THE SPUTTERED CoCrAlY COATING. J Chin Soc Corr Pro, 1991, 11(2): 181-187.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1991/V11/I2/181

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