试样面积比和形状对氢渗透及表观扩散系数的影响

中国腐蚀与防护学报

1995, Vol. 15

Issue (2): 119-123

研究报告

本期目录 | 过刊浏览

试样面积比和形状对氢渗透及表观扩散系数的影响

刘伦;乔利杰;于广华;褚武扬

北京科技大学;天津师范大学

EFFECT OF PERMEATION AREA RADIO AND SHAPE OF SPECIMEN ON HYDROGEN PERMEATION AND APMRENT DIFFUSION COEFFICIENT

Liu Lun;Qian Line;Yu Guanghua;Chu Wuyang (Univ. of Sci. Tech. Bdijing)(Tianjin Normal Univ.)

全文: PDF(452 KB)

摘要: 采用Ｄｅｖａｎａｔｈａｎ电池测渗氢电流时，试样面积比（氢渗透面积和试样总面积之比）及几何形状对测定结果有明显影响．当面积比小于某一临界值时，测不出氢渗透曲线，而且该临界值与试样几何形状有关．随试样面积比增大，测出的表观扩散系数也增大；相同面积比下测出的氢扩散系数与试样几何形状有关．

关键词 ：氢渗透, 表观扩散系数, 样品几何形状, 试样面积比

Abstract：The effect of the ratio of permeation area to the specimen area ζ and the shape of the specimenon hydrogen permeation of copper has been studied using the Devanathan's double electrolytic cell. Theresults show that only when the permeation area ratio ζ exceeds a critical value ζc, which depends on thegeometric shape, can the hydrogen permeation curve and the apparent diffusion coefficient be measured.The ζc has the smallest value for a circular specimen and the highest value for a polygonal one. Theapparent diffusion coefficient measured increases with increasing permeation area ratio ζ. A circularspecimen with a large permeation area ratio is the most ideal one for hydrogen permeation test at roomtemperature.

Key words： Hydrogen permeation Apparent diffusion coefficient Specimen shape

收稿日期: 1995-04-25

基金资助:国家自然科学基金

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刘伦;乔利杰;于广华;褚武扬. 试样面积比和形状对氢渗透及表观扩散系数的影响[J]. 中国腐蚀与防护学报, 1995, 15(2): 119-123.
. EFFECT OF PERMEATION AREA RADIO AND SHAPE OF SPECIMEN ON HYDROGEN PERMEATION AND APMRENT DIFFUSION COEFFICIENT. J Chin Soc Corr Pro, 1995, 15(2): 119-123.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1995/V15/I2/119

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