Microstructure and Frictional Behavior of Laser-cladding Ni-Cr-TiB<sub>2</sub>-CaF<sub>2</sub> Composite Coatings

Yao Yansong; Zhao Yanwen; Fang Liuyang; Gao Qiushi; Qin Yang; Yan Hua; Zhang Peilei

doi:10.15980/j.tzzz.2017.07.021

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Microstructure and Frictional Behavior of Laser-cladding Ni-Cr-TiB₂-CaF₂ Composite Coatings
Vol. 37, Issue 7, Pages: 766-770(2017)
Published： 2017 ，
DOI： 10.15980/j.tzzz.2017.07.021

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[1]姚延松,赵彦文,房刘杨,高秋实,秦阳,闫华,张培磊.铜合金表面激光熔覆Ni-Cr-TiB_2-CaF_2涂层组织及性能[J].特种铸造及有色合金,2017,37(07):766-770.

Yao Yansong, Zhao Yanwen, Fang Liuyang, et al. Microstructure and Frictional Behavior of Laser-cladding Ni-Cr-TiB₂-CaF₂ Composite Coatings. [J]. Special Casting & Nonferrous Alloys 37(7):766-770(2017)
[1]姚延松,赵彦文,房刘杨,高秋实,秦阳,闫华,张培磊.铜合金表面激光熔覆Ni-Cr-TiB_2-CaF_2涂层组织及性能[J].特种铸造及有色合金,2017,37(07):766-770. DOI： 10.15980/j.tzzz.2017.07.021.

Yao Yansong, Zhao Yanwen, Fang Liuyang, et al. Microstructure and Frictional Behavior of Laser-cladding Ni-Cr-TiB₂-CaF₂ Composite Coatings. [J]. Special Casting & Nonferrous Alloys 37(7):766-770(2017) DOI： 10.15980/j.tzzz.2017.07.021.

摘要

在Cu-Cr-Zr合金表面上以KF-6为过渡层

激光熔覆制备了Ni-Cr-TiB

-CaF

复合涂层

研究了不同含量的TiB

颗粒增强相对复合涂层组织及性能的影响。采用光学显微镜（OM）、扫描电镜（SEM）、能谱仪（EDS）和X射线衍射仪（XRD）等手段分析了复合涂层的显微组织和硬度

测试了涂层的摩擦磨损性能。结果表明

TiB

含量为5%、10%的复合涂层组织主要由颗粒相和树枝晶组成;随着TiB

含量增加

复合涂层组织中生成了板状组织和TiB

团聚物。TiB

含量为20%的复合涂层显微硬度(HV

0.1

)达1 200

约为铜合金的12倍;常温摩擦因数为0.30左右

耐磨性能优异。

Abstract

Ni-Cr-TiB

-CaF

composite coating was prepared by laser cladding on the surface of the Cu-CrZr alloy with KF-6as transition layer in order to understand influence of different mass percentage of TiB

ceramic particles reinforced phase on microstructure and properties of the composites prepared.Microstructure and micro-hardness of the composite coating are characterized by optical microscopy（OM）

scanning electron microscopy（SEM）

energy dispersive spectrometer（EDS）and X-ray diffraction（XRD）.The friction and wear properties of the coating were evaluated.The results indicate that microstructure of the composite coating with 5% and 10% TiB

is mainly composed of particles and dendritic structure.With the increase of TiB

content

plate structure and block aggregation of TiB

can be observed in microstructure of the composite coating.The micro-hardness of the composite coating with20% TiB

is about 1 200HV

0.1

which is about 12 times of the copper alloy.In addition

the frictional coefficient of composites with wear-resisting performance is about 0.30 at room temperature.

关键词

铜合金激光熔覆复合涂层TiB2摩擦特性

Keywords

Copper AlloyLaser CladdingComposite CoatingTiB2Frictional Behavior

references

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Microstructure and Interfacial Characteristics of LASER Cladding Ni-based Coating on Copper Alloy

Highly Wear-resistant and Crack-free Double-layer Fe-based Amorphous Composite Coatings by Laser Cladding

Effects of Laser Cladding Parameters on Properties of Fe-based Amorphous Coatings

Engineering Structure of Casting Copper Buddhism Portrait

Development of a Novel Casting Cu Alloy for Seawater Pumper and Valves

Microstructure and Frictional Behavior of Laser-cladding Ni-Cr-TiB2-CaF2 Composite Coatings

DOI： 10.15980/j.tzzz.2017.07.021

摘要

Abstract

关键词

Keywords

references

Microstructure and Frictional Behavior of Laser-cladding Ni-Cr-TiB₂-CaF₂ Composite Coatings