Acta Metallurgica Sinica (English Letters) ›› 1991, Vol. 4 ›› Issue (9): 174-178.

• • 上一篇    下一篇

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

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

  • 收稿日期:1991-09-11 修回日期:1991-09-11 出版日期:1991-09-11 发布日期:2009-10-10

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

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

  • Received:1991-09-11 Revised:1991-09-11 Online:1991-09-11 Published:2009-10-10

PDF (PC)

508

摘要： <正> The effect of LPPS Ni_3Al-Y_2O_3 diffusion barrier layer on interdiffusion of elements betweencoating and substrate has been investigated.It was found that the retardation of interdiffusionis related to the amount of oxide in the diffusion barrier layer.The retardation is not remark-able when the content of Y_2O_3 is 8 wt-%,whereas the diffusion of Al,Co or Cr has all beennotably retarded when the content of Y_2O_3 reaches 30 wt-%.The retardation effect of diffu-sion barrier is different for different elements such as Al,Co or Cr.

Abstract: The effect of LPPS Ni_3Al-Y_2O_3 diffusion barrier layer on interdiffusion of elements between coating and substrate has been investigated.It was found that the retardation of interdiffusion is related to the amount of oxide in the diffusion barrier layer.The retardation is not remark- able when the content of Y_2O_3 is 8 wt-%,whereas the diffusion of Al,Co or Cr has all been notably retarded when the content of Y_2O_3 reaches 30 wt-%.The retardation effect of diffu- sion barrier is different for different elements such as Al,Co or Cr.

Key words: coating, diffusion barrier, diffusion