Microstructure and Properties of Cemented Carbide Coating on Surface of High Speed Steel

Zhou Xiao- ping ~ 1; 2

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Microstructure and Properties of Cemented Carbide Coating on Surface of High Speed Steel
Issue 8, Pages: 472-474(2006)
Published： 2006 ，
DOI：

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[1]周小平,华林.高速钢表面硬质合金覆层的组织及性能[J].特种铸造及有色合金,2006(08):472-474+459.

Zhou Xiao- ping ~ 1, 2. Microstructure and Properties of Cemented Carbide Coating on Surface of High Speed Steel. [J]. Special Casting & Nonferrous Alloys (8):472-474(2006)
[1]周小平,华林.高速钢表面硬质合金覆层的组织及性能[J].特种铸造及有色合金,2006(08):472-474+459. DOI：

Zhou Xiao- ping ~ 1, 2. Microstructure and Properties of Cemented Carbide Coating on Surface of High Speed Steel. [J]. Special Casting & Nonferrous Alloys (8):472-474(2006) DOI：

摘要

通过热喷涂-真空粉末烧结的方法在高速钢表面制备硬质合金覆层

分析了硬质合金覆层组织和界面结构的特点、测试了硬质合金覆层的结合强度、硬度和耐磨性。结果表明

热喷涂后经过1200℃烧结

获得1

mm厚度的硬质合金覆层

结合强度达到450MPa

硬度达到85HRA

具有较高的耐磨性能。

Abstract

The microstructure and properties of cemented carbide on the interface of high speed steel by thermal spraying-vacuum powder sintering are investigated. The interface characteristics and bonding strength between coating and high-speed steel substrate

micro-hardness at varied temperatures and wear resistance of high speed steel-cemented carbide composites are analyzed. The results indicate that the cemented carbide coating with 1

mm in thickness and 450 MPa in bonding strength and 85 HRA in micro-hardness can be prepared after thermal spraying by vacuum powder sintering at 1 200 ℃

exhibiting higher wear resistance.