HOT CORROSION BEHAVIOR OF TiAl INTERMETALLICS IN MOLTEN SALTS

J Chin Soc Corr Pro

1997, Vol. 17

Issue (3): 233-237 DOI:

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HOT CORROSION BEHAVIOR OF TiAl INTERMETALLICS IN MOLTEN SALTS

TANG Zhaolin WANG Fuhui WU Weitao(State Key Laboratory for Corrosion and Protection; Institute of Corrosion and Protection of Metals; Chinese Academy of Sciences; Shenyang 110015)

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Abstract

Hot corrosion behavior of TiAl intermetallics in (Na,K)2SO4 and in Na2SO4+NaCl melts was investigated respectively. TiAl showed good hot corrosion resistance in (Na,K)2SO4 melts at 900℃ due to the formation of a barrier layer of Al2O3. However, TiAl suffered from severe hot corrosion in Na2SO4+NaCl melts at 850℃, where the protective Al2O3 barrier could not form. The mechanism of hot corrosion of TiAl was briefly discussed.

Key words: TiAl intermetallics Hot corrosion Molten sulfate

Received: 25 June 1997

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TANG Zhaolin WANG Fuhui WU Weitao(State Key Laboratory for Corrosion and Protection; Institute of Corrosion and Protection of Metals; Chinese Academy of Sciences; Shenyang 110015). HOT CORROSION BEHAVIOR OF TiAl INTERMETALLICS IN MOLTEN SALTS. J Chin Soc Corr Pro, 1997, 17(3): 233-237.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1997/V17/I3/233

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