J. Mater. Sci. Technol. ›› 1997, Vol. 13 ›› Issue (2): 127-132.

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Pack Aluminizing of Copper

M.E.Abd El-Azim ; H.M.Soliman (Metallurgy Dept., Atomic Energy Authority Cairo, Egypt)   

  • 收稿日期:1997-03-28 修回日期:1997-03-28 出版日期:1997-03-28 发布日期:2009-10-10

Pack Aluminizing of Copper

M.E.Abd El-Azim ; H.M.Soliman (Metallurgy Dept., Atomic Energy Authority Cairo, Egypt)   

  • Received:1997-03-28 Revised:1997-03-28 Online:1997-03-28 Published:2009-10-10

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摘要： 1.Introducti0nCopperanditsalloysareofillterestforgoodstrengthandhighthermalconductivityaPplicationsatelewtedtemperaturessuchasheatexchangercom~ponelltsandblastfuInacetuyeres.However,thehightemperatureaPplicationsofCuanditsalloysarelim-itedbysevereokidation0fCu.Aluminidecoatingsarekn0wntoprotectsteelsl1~3landNi-basesuperalloysl4~6]fromokidationalldcorrosionatelevatedtemperaturesinhy-dIocarbona....

Abstract: Aluminizing of Cu by a pack cementation process was performed to improve its surface properties.The effect of variation of pack aluminizing temperature from 800 to 900℃ and aluminizing time from 1 to 6 h on the microstructure and the thickness of the aluminide coating of Cu was investigated. Pack aluminizing of Cu significantly improved the microhardness and the oxidation resistance. The microhardness was increased about seven times and the oxidation resistance,after 96 h exposure in air at 900℃, was extremely increased ten times by aluminizing Cu at 900℃ for 3 h.