Abrasive wear behavior of bimodal WC-CoCr coatings sprayed by high velocity oxy-fuel

Da Feng Wang; Bo Ping Zhang; Cheng Chang Jia; Feng Gao; Yue Guang Yu; Xiao Lin Zhao; Zhi Hui Bai

Abrasive wear behavior of bimodal WC-CoCr coatings sprayed by high velocity oxy-fuel

Da Feng Wang^*, Bo Ping Zhang, Cheng Chang Jia, Feng Gao, Yue Guang Yu, Xiao Lin Zhao, Zhi Hui Bai

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

WC-CoCr composite coatings in bimodal and conventional structures were deposited by high velocity oxy-fuel (HVOF), respectively. The microstructure, microhardness, and fracture toughness of the coatings with different WC particle size distributions were studied, the coating abrasive wear characteristics were carried out by dry-sand rubber wheel abrasion tester, and the wear failure mechanisms of the coatings were investigated. The results show that, the bimodal structure coating fabricated by the powder containing 30wt% ultrafine WC particles demonstrates the most dissolution of WC in binder during deposition and the lowest coating fracture toughness. However, the bimodal structure coating fabricated by the powder containing 50wt% ultrafine WC particles combines the least porosity, the greatest microhardness and fracture toughness, and the most superior wear resistance.

Original language	English
Pages (from-to)	118-127
Number of pages	10
Journal	Fenmo Yejin Jishu/Powder Metallurgy Technology
Volume	35
Issue number	2
Publication status	Published - 27 Apr 2017
Externally published	Yes

Keywords

Abrasive wear
Bimodal
Coatings
High velocity oxy-fuel

Cite this

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title = "Abrasive wear behavior of bimodal WC-CoCr coatings sprayed by high velocity oxy-fuel",

abstract = "WC-CoCr composite coatings in bimodal and conventional structures were deposited by high velocity oxy-fuel (HVOF), respectively. The microstructure, microhardness, and fracture toughness of the coatings with different WC particle size distributions were studied, the coating abrasive wear characteristics were carried out by dry-sand rubber wheel abrasion tester, and the wear failure mechanisms of the coatings were investigated. The results show that, the bimodal structure coating fabricated by the powder containing 30wt% ultrafine WC particles demonstrates the most dissolution of WC in binder during deposition and the lowest coating fracture toughness. However, the bimodal structure coating fabricated by the powder containing 50wt% ultrafine WC particles combines the least porosity, the greatest microhardness and fracture toughness, and the most superior wear resistance.",

keywords = "Abrasive wear, Bimodal, Coatings, High velocity oxy-fuel",

author = "Wang, {Da Feng} and Zhang, {Bo Ping} and Jia, {Cheng Chang} and Feng Gao and Yu, {Yue Guang} and Zhao, {Xiao Lin} and Bai, {Zhi Hui}",

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T1 - Abrasive wear behavior of bimodal WC-CoCr coatings sprayed by high velocity oxy-fuel

AU - Wang, Da Feng

AU - Zhang, Bo Ping

AU - Jia, Cheng Chang

AU - Gao, Feng

AU - Yu, Yue Guang

AU - Zhao, Xiao Lin

AU - Bai, Zhi Hui

PY - 2017/4/27

Y1 - 2017/4/27

N2 - WC-CoCr composite coatings in bimodal and conventional structures were deposited by high velocity oxy-fuel (HVOF), respectively. The microstructure, microhardness, and fracture toughness of the coatings with different WC particle size distributions were studied, the coating abrasive wear characteristics were carried out by dry-sand rubber wheel abrasion tester, and the wear failure mechanisms of the coatings were investigated. The results show that, the bimodal structure coating fabricated by the powder containing 30wt% ultrafine WC particles demonstrates the most dissolution of WC in binder during deposition and the lowest coating fracture toughness. However, the bimodal structure coating fabricated by the powder containing 50wt% ultrafine WC particles combines the least porosity, the greatest microhardness and fracture toughness, and the most superior wear resistance.

AB - WC-CoCr composite coatings in bimodal and conventional structures were deposited by high velocity oxy-fuel (HVOF), respectively. The microstructure, microhardness, and fracture toughness of the coatings with different WC particle size distributions were studied, the coating abrasive wear characteristics were carried out by dry-sand rubber wheel abrasion tester, and the wear failure mechanisms of the coatings were investigated. The results show that, the bimodal structure coating fabricated by the powder containing 30wt% ultrafine WC particles demonstrates the most dissolution of WC in binder during deposition and the lowest coating fracture toughness. However, the bimodal structure coating fabricated by the powder containing 50wt% ultrafine WC particles combines the least porosity, the greatest microhardness and fracture toughness, and the most superior wear resistance.

KW - Abrasive wear

KW - Bimodal

KW - Coatings

KW - High velocity oxy-fuel

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JF - Fenmo Yejin Jishu/Powder Metallurgy Technology

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ER -

Abrasive wear behavior of bimodal WC-CoCr coatings sprayed by high velocity oxy-fuel

Abstract

Keywords

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