Corrosion behavior of laser-clad Cu-9Ni-6Sn coating

被引：15

作者：

Wu, Qianlin ^{[1
]}

Zhang, Jianqiang ^{[2
]}

机构：

[1] Shanghai Maritime Univ, Coll Ocean Sci & Engn, Shanghai 201306, Peoples R China

[2] Univ New South Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia

来源：

SURFACE & COATINGS TECHNOLOGY | 2018年 / 349卷

关键词：

Cu-9Ni-6Sn coating; Laser cladding; Sn segregation; Scanning vibrating probe technique; Pitting corrosion; NI-SN ALLOYS; 90-10; CUPRO-NICKEL; CU-15NI-8SN ALLOY; STAINLESS-STEEL; NACL SOLUTION; CU; MICROSTRUCTURE; COPPER; RESISTANCE; EVOLUTION;

D O I：

10.1016/j.surfcoat.2018.07.012

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Two Cu-9Ni-6Sn coatings with and without Sn-rich precipitates were obtained by laser-cladding. For two cross-section of coatings, the corrosion resistance can be graded in the order as equiaxed dendrite zone > dendrite zone > planar zone > Fe substrate due to the difference in composition and microstructure of the four zones. The coating with Sn-rich precipitates suffered severe localized corrosion, whereas general corrosion morphology was presented for the coating without Sn-rich precipitates. Clearly, a single-phase coating with large equiaxed dendrite zone should be developed by optimizing laser parameters for prolong the service life.

引用

页码：1117 / 1129

页数：13

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