Effect of particle size on the microstructure and properties of kinetic sprayed nickel coatings
Effect of particle size on the microstructure and properties of kinetic sprayed nickel coatings
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DOI：
10.1016/j.surfcoat.2010.03.046
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发表时间：
2010-07-15
影响因子：
5.4
通讯作者：
Lee, Changhee
中科院分区：
文献类型：
--
作者：
Bae, Gyuyeol;Kang, Kicheol;Lee, Changhee
本研究的目的是结合有限元模拟（FEM），研究粉末粒度对工业纯镍（CP-Ni）动力学喷涂涂层的微观结构和相应性能的影响。在实验之前，粘附因子（界面温度，接触时间和接触面积），回弹因子（相对恢复能量）和所得的临界速度的CP-Ni为不同的颗粒尺寸和温度的估计通过有限元。基于模拟，三种不同尺寸的CP-Ni粉末成功地沉积到低碳钢基板上使用粉末预热系统。在这里，我们建议优化的操作窗口的颗粒尺寸的CP-Ni的基础上的涂层的微观结构和性能（即沉积效率，结合强度和显微硬度），这是在良好的对应关系与模拟结果。(C)2010年爱思唯尔。All rights reserved.
This study aims to examine the effect of particle size on the microstructure and corresponding properties in kinetic sprayed coatings of commercially pure nickel (CP-Ni) in conjunction with finite element modeling (FEM). Prior to the experiments, the adhesion factors (interface temperature, contact time and contact area), rebound factor (relative recovery energy) and the resultant critical velocities of CP-Ni for different particle sizes and temperatures were estimated by FEM. Based on the simulations, three different sized CP-Ni powders were successfully deposited onto mild steel substrates using a powder preheating system. Here we suggest optimized windows of operation for particle sizes of CP-Ni based on the microstructure and properties of the coatings (i.e. deposition efficiency, bond strength and micro-hardness) which are in good correspondence with the simulation results. (C) 2010 Elsevier By. All rights reserved.