详细信息
文献类型:期刊文献
中文题名:常温铝合金锌系磷化过程的电化学研究
英文题名:Electrochemical Study of Room Temperature Zinc Phosphating on Aluminum Alloy
作者:李红玲[1];娄淑芳[2];付小宁[1]
第一作者:李红玲
机构:[1]新乡学院化学与化工学院;[2]商丘医学高等专科学校基础部
第一机构:新乡学院化学化工学院
年份:2010
期号:4
起止页码:37-39
中文期刊名:涂料工业
外文期刊名:Paint & Coatings Industry
收录:CSTPCD;;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;
基金:河南省科技攻关研究项目(0424240074);河南省自然科学研究项目(200510476009)
语种:中文
中文关键词:常温;铝合金;磷化;电化学;硝酸钍
外文关键词:room temperature ; aluminum alloy ; phosphating; electrochemical; thorium nitrate
摘要:采用X射线衍射(XRD)、扫描电镜(SEM)及能谱(EDX)和电化学研究的方法,研究了硝酸钍对6061铝合金锌系磷化成膜过程的影响,结果表明:少量的硝酸钍添加到磷化液中可以提高磷化成膜速度和细化晶粒,改变磷化膜的组成,硝酸钍是具有良好载氧能力的促进剂,与在不含硝酸钍的磷化液中所形成的磷化膜相比,铝合金在含有硝酸钍磷化液中所形成的磷化膜具有较低的化学活性,其耐蚀性得到很大的提高,在所研究的工艺条件下,最佳硝酸钍含量为20~35 mg/L。
The influence of thorium nitrate on the zinc phosphate coatings on aluminum alloy were stud- ied by X - ray diffraction ( XRD), scanning electron microscopy ( SEM ), energy - dispersive X - ray (EDX) and electrochemical measurements. The results showed that smale amount of thorium nitrate in phosphating solution can accelerate phosphate deposition and consumedly decrease zinc phosphate crystal size, and change the chemical composition of zinc phosphate coatings nitrate concentrations of the phosphating solu- tions change, which provided good capacity to transport oxygen and debase polarization of cathode. The phosphate coatings formed in phosphating solutions containing thorium nitrate can lower chemical reactivity of phosphating fihn and improved corrosive resistance, compared with thorium nitrate free. The optimum level of thorium nitrate was 20 -35 mg/L.
参考文献:
正在载入数据...