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INFLUENCE OF Ni-P ELECTROLESS PLATING ON STRESS CORROSION CRACKING OF 304 STEEL |
WANC Zheng;ZHANG Yongsheng Zhengzhou Institute of Technology |
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Cite this article:
WANC Zheng;ZHANG Yongsheng Zhengzhou Institute of Technology. INFLUENCE OF Ni-P ELECTROLESS PLATING ON STRESS CORROSION CRACKING OF 304 STEEL. Acta Metall Sin, 1991, 27(2): 129-134.
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Abstract By means of constant load tensile test, X-ray analysis, electrochemicalmeasurement and fractography, the influence of Ni-P electroless plating on the stresscorrosion cracking (SCC) of the cold-drawn and solid solutioned 304 steel immersedin boiling 42%MgCl_2 solution at 143℃ has been investigated. The Ni-P electrolessplating may increase the resistance to SCC of cold-drawn 304 steel remarkably, yetof solid solutioned one no more. The crystallization annealing of plating is unfa-vourable for the increase of resistance to SCC of the steel, while water quenchingfrom 1050℃ may further decrease the susceptibility to SCC. The mechanism ofprotection of Ni-P electroless plating on SCC of 304 steel was discussed.
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Received: 18 February 1991
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