Effect of borate coating on corrosion resistance of pure nickel in molten LiCl-Li2O
来源期刊：中国有色金属学报(英文版)2004年第1期
论文作者：刘瑞岩 王旭 张俊善 王秀敏 祝美丽
文章页码：143 - 147
Key words：pure nickel; borided nickel; molten LiCl-Li2O; corrosion
Abstract: The pack boriding process was used to treat pure nickel at a boriding temperature of 950℃for a boriding time of 5 h. A dense and continuous borided layer with 40μm thickness was obtained on pure nickel. Corrosion behavior of the borided layer was investigated in molten LiCl-10%Li2O(mass fraction) at 750℃in air. The mass loss of the boriding coating was 8.4 mg·cm-2after being corroded for 50 h in the melt, which is about three times lower than that of unborided pure nickel. The preferential corrosion of B in borided layer effectively prevents the corrosion of nickel, which improves the corrosion resistance of pure nickel in molten LiCl-Li2O.
