化工学报Issue(9)：3559-3567,9.DOI:10.3969/j.issn.0438-1157.2014.09.034
无氟无铵铝合金表面预处理新工艺
Novel surface pretreatment process of aluminum alloy with fluoride-free and ammonium-free formula
摘要
Abstract
A novel aluminum alloy surface pretreatment process with fluoride-free and ammonium-free formula was developed. Through the two-step process of pretreatment etching-neutralizing, the aluminum alloy surface was smooth and had excellent sand finishing, the aluminum consumption was less than 2.0%. The sand finishing performance of the new process was better than that in the traditional alkaline-etching process, and was close to the traditional acid-etching process. The aluminum consumption of the new process was reduced by 71%compared with the traditional alkaline-etching process, and was close to the traditional acid-etching process. The process duration was 23%and 31%faster than the traditional alkaline-etching process and traditional acid-etching process, respectively. The optimum composition of the formula was: Na2CO3 (80 g·L-1), NaOH (8 g·L-1), Na2SO4 (25 g·L-1), Na3PO4 (20 g·L-1), SDS (0.6 g·L-1) and glycerol (5 g·L-1). The process was operated at 55℃ for 10 min. This process achieved following functions in one-step: degreasing, sand-finishing, surface mechanical lines-eliminating. This novel process has the advantages of lower pollution and water consumption, shorter process and higher efficiency, which is environment friendly and energy efficient.关键词
铝合金/表面预处理/无氟无铵/铝耗/起砂/表面/腐蚀/环境Key words
aluminum alloy/surface pretreatment/fluoride-free and ammonium-free/aluminum consumption/sand finishing/surface/corrosion/environment分类
矿业与冶金引用本文复制引用
张超,刘庆芬,黄啸竹,梁向峰,李望良,王晓,刘银亭,刘会洲..无氟无铵铝合金表面预处理新工艺[J].化工学报,2014,(9):3559-3567,9.基金项目
广东省中国科学院全面战略合作项目（2011A090100006）；中国科学院院地合作项目；广东省省部产学研项目（2012A090300002）；四川省科技支撑计划项目（2013JZ0007）。 （）
