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TaoranWang

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[求助] 合金,扩散

课后习题,求助:在钢表面渡上一层Ni来保护钢材不被腐蚀,渡完后在1100度进行热处理,如果Ni含量低于60%便无法保护钢材,试估算最大热处理时间。现在有一钢材被热处理了最大时间的一半时间,如果要让它保持10年抗腐蚀能力,每年最多可以腐蚀多少毫米?
(. A steel component is plated with a monolayer of pure Ni as corrosion inhibitor for room temperature service. After plating the component has to be heat treated at 1100 °C; if the minimum level of protection occurs for a Ni content of 60 %, then estimate the maximum time for which the component can be heat treated. A component is heat treated for half this time, estimate the maximum corrosion rate (mm/year) if the component must retain its corrosion resistance for a minimum of 10 years.)
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秀丽文思

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2楼2014-11-04 09:30:33
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