EFFECT OF METAL-OXIDE DIFFUSION BARRIER ON INTERDIFFUSION OF ELEMENTS BETWEEN COATING AND SUBSTRATE

Acta Metall Sin

1990, Vol. 26

Issue (6): 100-104 DOI:

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EFFECT OF METAL-OXIDE DIFFUSION BARRIER ON INTERDIFFUSION OF ELEMENTS BETWEEN COATING AND SUBSTRATE

SUN Biwu;GUAN Hengrong;SUN Xiaofeng;LI Tiefan Institute of Metal Research; Academia Sinica; Shenyang; Institute of Corrosion and Protection of Metals; Academia Sinica; Shenyang

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SUN Biwu;GUAN Hengrong;SUN Xiaofeng;LI Tiefan Institute of Metal Research; Academia Sinica; Shenyang; Institute of Corrosion and Protection of Metals; Academia Sinica; Shenyang. EFFECT OF METAL-OXIDE DIFFUSION BARRIER ON INTERDIFFUSION OF ELEMENTS BETWEEN COATING AND SUBSTRATE. Acta Metall Sin, 1990, 26(6): 100-104.

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Abstract The effect of LPPS Ni_3Al-Y_2O_3 diffusion barrier layer on interdiffu-sion of elements between coating and substrate has been investigated. It is foundthat retardation of interdiffusion is related to the amount of oxide in the diffusionbarrier layer. The retatdation is not remarkable when the content of Y_2O_3 is 8 wt-%,whereas the diffusion of Al, Co or Cr has all been notably retarded when thecontent of Y_2O_3 reaches 30 wt-%. The retardation effect of diffusion barrier is dif-ferent for different elements such as Al, Co or Cr.

Key words: coating diffusion barrier diffusion

Received: 18 June 1990

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1990/V26/I6/100

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