A Finite Difference Method for Determining Interdiffusivity of Aluminide Coating Formed on Superalloy

材料科学技术（英文）, 2004, 20(5): 595-598.

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1.State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

2.State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

3.State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

4.State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

5.State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

6.State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

A Finite Difference Method for Determining Interdiffusivity of Aluminide Coating Formed on Superalloy

Keywords： Interdiffusivity

A numerical method has been developed to extract the composition-dependent interdiffusivity from the concentration profiles in the aluminide coating prepared by pack cementation. The procedure is based on the classic finite difference method (FDM). In order to simplify the model, effect of some alloying elements on interdiffusivity can be negligible.Calculated results indicate the interdiffusivity in aluminide coating strongly depends on the composition and give the formulas used to calculate interdiffusivity at 850, 950 and 1050℃. The effect on interdiffusivity is briefly discussed.

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A Finite Difference Method for Determining Interdiffusivity of Aluminide Coating Formed on Superalloy

参考文献