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Abstract The diffusion of hydrogen in electro-deposited Ni-P amorphous alloys with different phosphorous contents (e. g. 8,10,12,14wt. ％) has been measured using electrochemical technique. The hydrogen diffusivities in the alloys decrease as the phosphorous contents increase. The second round permeation transients show that the hydrogen trapping effects strengthen with the increase of phosphorous contents in Ni-P amorphous alloy. The relation between diffusion co-efficient of hydrogen and temperature is in agreement with the Arrhenius curve. When the phosphorous concentration is 12wt. ％, D=9.16×10~(-2)exp (-49500/RT) cm~2/sec, diffusion activation energy is 49.5kJ/mol. Passive films formed on Ni-P amorphous alloy in 0.1N NaOH solution have some influence on the apparent diffusivity of hydrogen. It is observed that the apparent diffusivities are less affected by polarized potentials in passive region but greatly in overpassive region.
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Received: 25 June 1992
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Cite this article:
Wang Jiyin and Shan Dayong (Corrosion Science Laboratory; Institute of Corrosion and protection of Metals; Chinese Academy of Sciences). DIFFUSION OF HYDROGEN IN ELECTRO-DEPOSITED Ni-P AMORPHOUS ALLOYS. J Chin Soc Corr Pro, 1992, 12(3): 258-262.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1992/V12/I3/258
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[1] 王继荫,单国友,中国腐蚀与防护学报;8(3) ,240(1988)
[2] Bayes, M. , et al, Transaction of Institute of Metal Finishing; 5, 45 (1985)
[3] Duncan ,R. N ,Perfomance of Material; 1,28 (1983)
[4] 增井宽二.山田敏夫.久松敬弘.金属表面技术(日);31． 667(1980)
[5] 增井宽二.金属表面技术(日);32． 410(1981)
[6] Devanathan,M. A. V. , Stachurski,Z,Pro. Royal,Soc. ,A270,90(1962)
[7] Pressouyre, G. M ,Bernstein,I. M ,Metall Trans; 9A, 1571 (1979)
[8] 林树智,黑祖昆,物理学报;33,302(1984)
[9] 姜晓霞,张弦,金属学报;22,B80(1986)
[10] Zallen.R,著,黄昀等译,非晶态固体物理学,北京大学出版社,P90,1988年
[11] Volke, J, Aleyeed, G, Hydrogen in Metal, In : Topics in Applied Physics, 25, Alifild. G. and Volke J. eds, 321, (1978)
[12] 孙冬柏,北京科技大学学报;12,97(1990) |
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