pH value in simulated occluded corrosion cell for magnesium alloys
Corrosion of magnesium alloys is an important issue for their applications in automobile and aerospace industry.pH values as a function of time in two types of simulated occluded corrosion cells (OCC) for magnesium alloys AZ80 and AM60 were measured.The influence of mass ratio of solution to material or liquid to solid ratio (L/S ratio),initial pH value and chemical compositions of solutions on pH value in OCC was discussed.The experimental results show that pH value for magnesium alloys increases gradually or rapidly in Occ,depending on L/S ratio,initial pH value of solution and chloride ions concentration etc,and then reaches up to 10.5.10.6 and finally stabilizes at the level.The onset in the pH value time curve corresponds to the precipitate of magnesium hydroxide according to the theoretical calculation.
magnesium alloy pH value corrosion occluded corrosion cell free corrosion potential
ZENG Rong-chang CHEN Jun KE Wei HAN En-hou W.Dietzel
School of Materials Science and Engineering,Chongqing Institute of Technology,Chongqing 400050,China Environmental Corrosion Center,Institute of Metals Research,Chinese Academy of Sciences,Shenyang 110 GKSS Research Centre Geesthacht GmbH,Geesthacht 21502,Germany
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）