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

页码：27 / 33

页数：7

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