汽车实用技术
汽車實用技術
기차실용기술
PRACTICAL TECHNOLOGY OF AUTOMOBILE
2012年
7期
38-41
,共4页
汽车%铝水箱%防腐%钼酸钠%成膜
汽車%鋁水箱%防腐%鉬痠鈉%成膜
기차%려수상%방부%목산납%성막
automobile%aluminum%tank corrosion: sodium molybdate: Fdm
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。
本文調查分析瞭陝汽重卡鋁水箱腐蝕滲漏情況,通過實驗分析瞭鋁閤金在不同緩蝕劑、促進劑、pH值等條件下的成膜情況,以及各種膜在鹽霧、鹽水浸泡等條件下的腐蝕實驗。結果錶明:在痠性溶液中,鉬痠納對鋁有著良好的緩蝕作用,其緩蝕機理主要是痠根離子會吸附在鋁的錶麵,阻止瞭鋁的溶解,起到保護的作用。另外鉬痠鹽是弱氧化劑,在痠溶液中被鋁還原,生成深藍色的鉬藍,鉬藍也會吸附到鋁的錶麵,從而抑製暘極反應[1];其防腐效果明顯,給鋁水箱漏水防治提供瞭可行方案。
본문조사분석료협기중잡려수상부식삼루정황,통과실험분석료려합금재불동완식제、촉진제、pH치등조건하적성막정황,이급각충막재염무、염수침포등조건하적부식실험。결과표명:재산성용액중,목산납대려유착량호적완식작용,기완식궤리주요시산근리자회흡부재려적표면,조지료려적용해,기도보호적작용。령외목산염시약양화제,재산용액중피려환원,생성심람색적목람,목람야회흡부도려적표면,종이억제양겁반응[1];기방부효과명현,급려수상루수방치제공료가행방안。
This paper investigates and analyzes the Shaanxi Auto heavy truck 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 reaction [1]; its anti-corrosion effect, the aluminum tank leaking prevention and treatment provides a viable solution.