| 金属-氧化物扩散障对涂层和基体间元素互扩散的阻碍作用 |
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| 引用本文： | 孙碧武,管恒荣,孙晓峰,李铁藩.金属-氧化物扩散障对涂层和基体间元素互扩散的阻碍作用[J].金属学报,1990,26(6):100-104. |
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| 作者姓名： | 孙碧武 管恒荣 孙晓峰 李铁藩 |
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| 作者单位： | 中国科学院金属研究所
(孙碧武，管恒荣，孙晓峰)，中国科学院金属腐蚀与防护研究所腐蚀科学开放实验室(李铁藩) |
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| 基金项目： | 中国科学院腐蚀科学开放研究室课题 |
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| 摘 要： | 本文研究了低压等离子喷涂的Ni_3Al-Y_2O_3扩散障层对外层涂层与基体间元素互扩散的阻碍作用,发现阻碍扩散的作用与扩散障层中氧化物含量有关。当Y_2O_3含量为8wt-%时,扩散障对元素互扩散没有明显的阻碍作用;当Y_2O_3含量为30wt%时,对Al,Co和Cr等元素的扩散有明显的阻碍作用。并且,阻碍作用随元素不同而不同。
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| 关 键 词： | 涂层 扩散障 扩散 |
| 收稿时间： | 1990-06-18 |
| 修稿时间： | 1990-06-18 |
EFFECT OF METAL-OXIDE DIFFUSION BARRIER ON INTERDIFFUSION OF ELEMENTS BETWEEN COATING AND SUBSTRATE |
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| SUN Biwu,GUAN Hengrong,SUN Xiaofeng,LI Tiefan Institute of Metal Research,Academia Sinica,Shenyang.EFFECT OF METAL-OXIDE DIFFUSION BARRIER ON INTERDIFFUSION OF ELEMENTS BETWEEN COATING AND SUBSTRATE[J].Acta Metallurgica Sinica,1990,26(6):100-104. |
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| Authors: | SUN Biwu GUAN Hengrong SUN Xiaofeng LI Tiefan Institute of Metal Research Academia Sinica Shenyang |
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| Affiliation: | 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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| 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 found
that retardation of interdiffusion is related to the amount of oxide in the diffusion
barrier 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 the
content 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. |
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| Keywords: | coating diffusion barrier diffusion |
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