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增材制造 1

微观结构 1

气体雾化 1

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铬镍铁合金 1

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Effects of additive NaI on electrodeposition of Al coatings in AlCl

Tianyu Yao, Haiyan Yang, Kui Wang, Haiyan Jiang, Xiao-Bo Chen, Hezhou Liu, Qudong Wang, Wenjiang Ding

《化学科学与工程前沿（英文）》 2021年第15卷第1期页码 138-147 doi: 10.1007/s11705-020-1935-8

摘要： Effects of NaI as an additive on electrodeposition of Al coatings in AlCl -NaCl-KCl (80-10-10 wt-%) molten salts electrolyte at 150°C were investigated by means of cyclic voltammetry, chronopotentiometry, scanning electron microscopy and X-ray diffraction (XRD). Results reveal that addition of NaI in the electrolyte intensifies cathodic polarization, inhibits growth of Al deposits and increases number density of charged particles. The electrodeposition of Al coatings in the AlCl -NaCl-KCl molten salts electrolyte proceeds via three-dimensional instantaneous nucleation which however exhibits irrelevance with NaI. Galvanostatic deposition results indicate that NaI could facilitate the formation of uniform Al deposits. A compact coating consisting of Al deposits with an average particle size of 3 μm was obtained at a current density of 50 mA∙cm in AlCl -NaCl-KCl molten salts electrolyte with 10 wt-% NaI. XRD analysis confirmed that NaI could contribute to the formation of Al coating with a preferred crystallographic orientation along (220) plane.

关键词： NaI additive electrodeposition molten salts Al coating

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用于粉末床增材制造的铬镍铁合金粉末特征研究

Quy Bau Nguyen, Mui Ling Sharon Nai, Zhiguang Zhu, Chen-Nan Sun, Jun Wei, Wei Zhou

《工程（英文）》 2017年第3卷第5期页码 695-700 doi: 10.1016/J.ENG.2017.05.012

摘要：

本研究中使用不同的粉末表征技术对铬镍铁合金的原始粉末和回收粉末在粉末床增材制造（AM）上的流动特性、行为特征进行研究。结果发现，选择性激光熔化（SLM）工艺的粒径分布（PSD）范围通常在15 ～ 63 μm 之间。原始的铬镍铁合粉末的流量约为28 s·(50 g)–1，组装密度是60%。流变测试结果表明，原始粉末与回收粉末相比具有更好的流动性。讨论了两种粉末之间的相互关系。运用铬镍铁合金粉末已经成功打印出了螺旋桨。实验结果表明铬镍铁合金粉末适用于增材制造（AM），本研究为生产增材制造粉末提供参考。

关键词：增材制造粉末特征气体雾化微观结构铬镍铁合金