Microstructure and dry sliding wear behavior of Fe2TiSi/γ-Fe/Ti5Si3 composite coating fabricated by plasma transferred arc cladding process

被引：16
作者：
Liu, Yuan-Fu [1 ]
Liu, Xiu-Bo [2 ]
Xu, Xiang-Yang [1 ]
Yang, Si-Ze [3 ]
机构：
[1] Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Inst Mat Sci & Engn, Beijing 100044, Peoples R China
[2] Soochow Univ, Sch Mech & Elect Engn, Suzhou 215021, Peoples R China
[3] Chinese Acad Sci, Inst Phys, Beijing 100083, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2010年 / 205卷 / 03期
基金：
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词：
Wear; Intermetallic; Composite coating; PTA cladding; HIGH-TEMPERATURE SYNTHESIS; RESISTANCE; SILICIDE; OXIDATION; TI5SI3; ALLOYS; STEEL;
D O I：
10.1016/j.surfcoat.2010.07.127
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Wear resistant Fe2TiSi reinforced composite coating with a microstructure consisting of fine Fe2TiSi primary dendrites uniformly distributed in the super fine gamma-Fe/Ti5Si3 eutectic matrix was in situ fabricated on a substrate of 0.20%C plain low carbon steel substrate by the plasma transferred arc (PTA) cladding process using Fe-Ti-Si-Cr powders blend as the precursor material. Microstructure of the coating was characterized by scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray energy dispersive spectrometer (EDS). Microhardness along the depth direction of the PTA clad Fe2TiSi/gamma-Fe/Ti5Si3 multi-phase composite coating was measured. Room temperature dry sliding wear resistance of the coating was tested. Results showed that the PTA clad Fe2TiSi/gamma-Fe/Ti5Si3 composite coating had high and almost uniform hardness distribution along the depth direction of the coating. Under dry sliding wear conditions at an ambient temperature, the PTA clad Fe2TiSi/gamma-Fe/Ti5Si3 composite coating exhibited excellent abrasive and adhesive wear resistance. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：814 / 819
页数：6
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