中国激光, 2013, 40 (12): 1203005, 网络出版: 2013-11-19
成分及性能连续变化梯度涂层的半导体激光制备
Composition and Properties Continuously Changed Gradient Coating Fabricated by High Power Diode Laser
激光技术 半导体激光器 梯度涂层 连续变化的成分及性能 laser technique high power diode laser gradient coating components and properties changed continuously
摘要
为了获得成分及性能连续变化的梯度涂层,采用2.5 kW半导体激光器和四路联动送粉系统,利用旁轴送粉方式,通过成形过程中实时改变Ni25/Ni60双组分自熔合金粉末及AlSi12/Fe62双金属自熔合金粉末的组分配比,在45#钢棒状基体上分别制备了宽度为9 mm的粉末组分连续变化的螺旋状梯度涂层。对涂层试样进行能量色散谱(EDS)、显微组织及显微硬度测试。结果表明,沿涂层制备方向,Ni25/Ni60梯度涂层中Cr元素含量和显微硬度连续降低;AlSi12/Fe62梯度涂层中Fe、Cr和Al等元素含量分别沿制备方向连续变化;两种涂层各自的显微组织呈明显变化。
Abstract
To obtain gradient coating with changed components and properties, the gradient coating comprised of two-kind metal powders (Ni25/Ni60 and AlSi12/Fe62) is fabricated with paraxonic synchronism powder feeding mode, 2.5 kW high power diode laser and 4 channels powder system. The 9-mm width spiral gradient coatings on 45# steel stick are achieved. Meanwhile, energy dispersive spectroscopy (EDS), microstructure and micro-hardness of coating are studied. The experimental results show that along the forming direction, the content of element Cr and the micro-hardness decrease continuously in Ni25/Ni60 gradient coating; the contents of elements Fe, Cr and Al change continuously in AlSi12/Fe62 gradient coating; the microstructures in both coatings change obviously.
武强, 王旭葆, 牛健强, 杨武雄, 肖荣诗, 左铁钏. 成分及性能连续变化梯度涂层的半导体激光制备[J]. 中国激光, 2013, 40(12): 1203005. Wu Qiang, Wang Xubao, Niu Jianqiang, Yang Wuxiong, Xiao Rongshi, Zuo Tiechuan. Composition and Properties Continuously Changed Gradient Coating Fabricated by High Power Diode Laser[J]. Chinese Journal of Lasers, 2013, 40(12): 1203005.