Ti含量对热浸镀Zn-Al-Ti合金镀层形貌和性能的影响Effect of Ti content on morphology and properties of Zn-Al-Ti hot-dipped galvanizing coatings
解凯,贺志荣,刘继拓,解亚丹,姚凯
摘要(Abstract):
为了研制新型热镀锌合金,提高镀层性能,本研究在锌液中加入不同含量的Ti,配制成Zn-0.5Al-x Ti(x=0、0.03%、0.05%、0.07%、0.10%和0.12%,质量分数)合金镀浴,并在低碳钢板上进行了施镀。用光学显微镜、显微硬度计和全浸腐蚀实验对镀层的形貌和性能进行了表征。结果表明,添加适量Ti能有效减少锌灰、浮渣、锌瘤和镀层厚度,提高镀层的表面质量。随着Ti含量增加,镀层表面光洁度先降低后升高,镀层表面晶粒尺寸先减小后增大,镀层显微硬度和腐蚀速率先增加后减小再增加。当Ti含量为0.07%时,镀层的厚度较薄,镀层的光洁度、硬度和耐蚀性较好。
关键词(KeyWords): 热浸镀;Zn-0.5Al-Ti合金;镀层形貌;镀层硬度;镀层腐蚀速率
基金项目(Foundation): 陕西省科技统筹创新工程计划(2011KTDZ01-03-06);; 陕西省大学生创新创业训练计划(1723);; 陕西理工学院研究生创新基金(SLGYCX1432)
作者(Author): 解凯,贺志荣,刘继拓,解亚丹,姚凯
DOI: 10.13289/j.issn.1009-6264.2014.s2.038
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