Effect of Plasma Cladding Speed on the Microstructure and Properties of ZrC-ZrB2/NiAl Coating

被引：0
|
作者：
Xia, Pengcheng [1 ]
Li, Ye [1 ]
Xie, Kun [1 ]
Cao, Meiqing [1 ]
Tan, Yunliang [2 ]
机构：
[1] Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Peoples R China
[2] Shandong Univ Sci & Technol, Shandong Prov & Minist Sci & Technol, State Key Lab Min Disaster Prevent & Control, Qingdao 266590, Peoples R China
来源：
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS | 2021年 / 24卷 / 04期
基金：
国家高技术研究发展计划(863计划);
关键词：
in-situ synthesis; wear resistance; microhardness; ZrC-ZrB < sub > 2 <; sub >; NiAl composite coating; C/C COMPOSITES; ZRB2; EVOLUTION;
D O I：
10.1590/1980-5373-MR-2020-0535
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
NiAl composite coating strengthened by ZrC and ZrB2 phases is synthesized by the plasma cladding process. The influence of cladding speed on microstructrue and properties of coatings is studied. The main phases of coatings are NiAl, gamma-(Fe,Ni), ZrC and ZrB2 phases. ZrC is in the shape of points and small blocks, ZrB2 shows long strips and needle bar. The slower the cladding speed, the larger the size of the reinforcing phases. With the increase of cladding speed, the wear resistance of the coatings improves. Coating with the cladding speed of 10mm/s has excellent wear-resistance property owing to high hardness and low friction coefficient. ZrC and ZrB2 strengthening phases play an important role. The main wear mechanism of NiAl composite coating is adhesive wear.
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页数：8
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