纳米Al_2O_3复合镀铁层的结构与性能
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摘要
为提高船机零部件的耐磨性,减少零部件磨损,通过在电镀液中添加Al_2O_3纳米颗粒的方法,在45钢表面制备出含有Al_2O_3纳米颗粒的复合镀铁层。对制备出的镀层进行硬度、表面形貌、元素成分和摩擦磨损性能分析。结果表明:Al_2O_3纳米颗粒成功进入了镀层,含有Al_2O_3颗粒的复合镀层相对普通镀铁层有明显提高;含有40 g/L Al_2O_3的复合镀层的摩擦系数相对普通镀层下降了25%,磨损量也大幅下降;经过摩擦磨损后复合镀层的表面状态良好。
In order to improve the wear resistance of the ship parts and reduce the wear, a composite iron-coated layer containing Al_2 O_3 nanoparticles is prepared on the surface of 45 steel by adding Al_2 O_3 nanoparticles to the plating solution. The hardness, surface morphology, elemental composition and friction and wear properties of the prepared coatings are analyzed. The results show that the Al_2 O_3 nanoparticles have successfully entered the coating, and the composite coating containing Al_2O_3 particles is obviously improved compared with the ordinary galvanized layer. The friction coefficient of the composite coating with 40 g/L Al_2 O_3 is 25% lower than the ordinary coating and the wear amount is also decreased. The surface condition of the composite coating after friction and wear is good.
In order to improve the wear resistance of the ship parts and reduce the wear, a composite iron-coated layer containing Al_2 O_3 nanoparticles is prepared on the surface of 45 steel by adding Al_2 O_3 nanoparticles to the plating solution. The hardness, surface morphology, elemental composition and friction and wear properties of the prepared coatings are analyzed. The results show that the Al_2 O_3 nanoparticles have successfully entered the coating, and the composite coating containing Al_2O_3 particles is obviously improved compared with the ordinary galvanized layer. The friction coefficient of the composite coating with 40 g/L Al_2 O_3 is 25% lower than the ordinary coating and the wear amount is also decreased. The surface condition of the composite coating after friction and wear is good.
引文
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[2]刘忆,杨森,殷锦捷,等.低温镀铁时电流密度对镀层性能的影响[J].电镀与涂饰,2008,27(2):15-16.
[3]时双,孙明营,郝艳飞,等.表面处理工艺对铝合金抗激光损伤能力的影响[J].中国激光,2016,43(12):1-8.
[4]胡振峰,董世运,汪笑鹤,等.面向装备再制造的纳米复合电刷镀技术的新发展[J].中国表面工程,2010,23(1):87-91.
[5]冯秋元,李廷举,金俊泽.复合电镀机理研究及最新进展[J].稀有金属材料与工程,2007,36(3):559-564.
[6]赵恩蕊,朱志杰,董文仲,等.铁基Si C微纳米复合镀层的制备与性能研究[J].大连海事大学学报,2014,41(3):104-108.
[7]涂伟毅,徐滨士,董世运,等.纳米二氧化硅对镍电沉积影响及在复合镀层中的化学键合状态[J].化学学报,2004,62(20):2010-2014.
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