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YANG Jing, LI Chang-xiang, ZHU Jin-xia, LIU Xiao-rong. Properties of Ag95CuNiLi fIler metal brazing titanium alloy and stainless steel Ⅰ.Corrosion of filler metal[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2003, (6): 60-62,68.
Citation: YANG Jing, LI Chang-xiang, ZHU Jin-xia, LIU Xiao-rong. Properties of Ag95CuNiLi fIler metal brazing titanium alloy and stainless steel Ⅰ.Corrosion of filler metal[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2003, (6): 60-62,68.
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Properties of Ag95CuNiLi fIler metal brazing titanium alloy and stainless steel Ⅰ.Corrosion of filler metal

  • The National Key Laboratory for Nuclear Fuel & Materials, Nuclear Power Institute of China, Chengdu 610041, China

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  • Received Date: April 15, 2003
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  • Ag95CuNiLi filler metal was dereloped,and the uniform corrosion,point corrosion and electrochemistry corrosion[bi-metallic couple corrosion]of the filler metal in nuclear-powered working condition was studied.Uniform corrosion testing indicated that corrosion goes stabilization after 1500 hours and uniform corrosion race of the filler metal was 7.2 mg/(dm2·month).Point corrosion testing indicated that there is not point corrosion mark,and uniform corrosion characteristic was present to the filler metal.Bi-metallic couple corrosion testing indicated that the filler metal was protected in the filler metal-stainless steel because the filler metal was cathode and stainless steel was anode.The couple current is smaller than 1 μA.The filler metal would be eroded because the filler metal was anode in the filler metal and titanium alloy.The couple current was only 1.2 μA.Couple current density was only about 1.5×10-1 μA/cm2,therefore electrochemistry corrosion rate of the filler metal was small in the filler metal and titanium alloy bi-metallic couple corrosion electrode.
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