PREPARATION AND HARDNESS OF A FUNCTIONALLY GRADED Ni-Al COATING

被引：1
|
作者：
Li, Ningning [1 ]
Xu, Lei [1 ]
Huang, Liang [1 ]
Tong, Yuping [1 ]
Jiang, Zhengquan [1 ]
Li, Keliang [1 ]
机构：
[1] North China Univ Water Resources & Elect Power, Sch Mat Sci & Engn, Zhengzhou, Peoples R China
来源：
MATERIALI IN TEHNOLOGIJE | 2023年 / 57卷 / 01期
关键词：
Ni2Al3; coating; nanoindentation; hardness; gradient; TEMPERATURE; NICKEL;
D O I：
10.17222/mit.2022.650
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A functionally graded Ni-Al coating can improve the hardness of low-carbon steel, which can then adapt to various conditions due to a high hardness. The primary purpose of this research was the preparation of a Ni-Al coating by adopting a two-step method including nickel plating and pack aluminizing. The coating phase and morphology were characterized with XRD, SEM and EDS. Subsequently, the hardness of the Ni-Al coating was measured using a nanoindentation test. The results show that different aluminum contents in the coating surface lead to different coating phases, mainly Ni2Al3. The change in the coating phases conformed to the Ni-Al binary phase diagram. The Ni-Al coating showed a continuous gradient structure and composition. In addition, the coating also showed continuous gradient variation, relating to the hardness.
引用
收藏
页码：27 / 33
页数：7
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