热处理工艺对电动汽车轮毂电机散热翅片耐蚀性能的影响  

Effect of Heat Treatment Process on Corrosion Resistance of Heat Radiating Fin for Electric Vehicle Wheel Hub Motor

作　　者：姬虹[1] JI Hong(Henan Polytechnic, Zhengzhou 450046, Chin)

机构地区：[1]河南职业技术学院

出　　处：《热加工工艺》2018年第8期223-225,229,共4页Hot Working Technology

基　　金：河南省教育厅自然科学研究计划项目(2011C20019)

摘　　要：采用不同温度和时间对电动汽车镁轮毂电机散热翅片进行了热处理,并进行了耐腐蚀性能的测试与分析。结果表明：随热处理温度从170℃升高至260℃（保温3 h）或热处理时间从1 h升高至5 h（热处理温度245℃）,散热翅片的耐腐蚀性能均先提高后下降;当热处理为245℃保温3 h时,轮毂电机散热翅片的腐蚀电位最正、质量损失率最小、腐蚀电流密度最小,耐腐蚀性能最佳。热处理工艺参数优选为245℃保温3 h。The heat treatment of the heat radiating fin for electric vehicle magnesium hub motor was carried out by using different temperatures and time. And the corrosion resistance of the specimens were tested and analyzed. The results show that with heat treatment temperature increasing from 170 ℃ to 260 ℃（holding 3 h） or heat treatment time from 1 h to 5 h （heat treatment temperature at 245 ℃）, the corrosion resistance of the heat radiating fin increases firstly and then decreases; when the heat treatment is 245℃ for 3 h, the corrosion potential is the most positive, the mass loss rate and corrosion current density are the lowest, and the corrosion resistance is the best. The optimized heat treatment process parameters are 245 ℃ for 3h.

关 键 词：热处理温度 热处理时间 轮毂电机散热翅片 耐腐蚀性能 热处理工艺 

分 类 号：TG166[金属学及工艺—热处理]