Ni-Al intermetallic coatings prepared by laser cladding and reaction synthesis

被引：0

作者：

Cheng, Guang-Ping ^{[1
]}

Han, Zhong-Ya ^{[1
]}

Gao, Guo-Can ^{[2
]}

He, Yi-Zhu ^{[1
]}

Ding, Han-Lin ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Anhui University of Technology, Maanshan, China

[2] Anhui Masteel Holly industrial Co Ltd, Maanshan, China

来源：

Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | 2014年 / 35卷 / 11期

关键词：

Nickel compounds - Precipitation (chemical) - Laser cladding - Aluminum alloys - Nickel coatings - Aluminum coatings - Powder metals - Aluminum compounds - Binary alloys - Intermetallics;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Ni-Al intermetallic compound coatings were prepared by laser cladding and reaction synthesis with mixed-powders of nickel-coated aluminum, Ni-based alloy and Al. The results show that the two-phase coatings consist mainly of NiAl and Ni3Al, with the dendritic NiAl phase surrounded continuously by Ni3Al, and some other Ni3Al precipitation from the NiAl phase in fine irregular angular-shape. Compared with directly cladding nickel-coated aluminum powder, adding nickel-based alloy and aluminum powders to the nickel-coated aluminum not only reduces the cladding power from 2.4 kW to 2.1 kW, but also improves the coatings quality and reduces the molten iron from substrate into the coatings. The hardness values of the coatings are up from 410-440 HV to 490-540 HV. ©, 2014, Editorial Office of Transactions of Materials and Heat Treatment. All right reserved.

引用

页码：155 / 160