重型汽车铝水箱的防腐蚀成膜研究

本文调查分析了陕汽重卡铝水箱腐蚀渗漏情况，通过实验分析了铝合金在不同缓蚀剂、促进剂、pH值等条件下的成膜情况，以及各种膜在盐雾、盐水浸泡等条件下的腐蚀实验。结果表明：在酸性溶液中，钼酸纳对铝有着良好的缓蚀作用，其缓蚀机理主要是酸根离子会吸附在铝的表面，阻止了铝的溶解，起到保护的作用。另外钼酸盐是弱氧化剂，在酸溶液中被铝还原，生成深蓝色的钼蓝，钼蓝也会吸附到铝的表面，从而抑制阳极反应1]；其防腐效果明显，给铝水箱漏水防治提供了可行方案。

Heavy-duty automotive aluminum tank anti-corrosion film

This paper investigates and analyzes the Shaanxi Auto heavy track aluminum tank corrosion leakage, through the experimental analysis of aluminum alloy corrosion inhibitor in different,to promote the film-forming agent,pH,and other conditions,as well as a variety of membranes in the salt spray,salt watercorrosion test under the soaking conditions.The results showed that:in acidic solution,molybdate is satisfied that good inhibition of aluminum corrosion inhibition mechanism of the radical ion adsorbed on the surface of the aluminum to prevent the dissolution of the aluminum,play a protective role.In addition, molybdate weak oxidants,aluminum reduction in acid solution,to generate dark blue molybdenum blue, molybdenum blue also adsorbed onto the aluminum surface,thus inhibiting the anodic reaction1];its anti-corrosion effect,the aluminum tank leaking prevention and treatment provides a viable solution.