Characterization and in-situ formation mechanism of tungsten carbide reinforced Fe-based alloy coating by plasma cladding

被引：9

作者：

Wang, Mi-qi ^{[1
]}

Zhou, Ze-hua ^{[1
]}

Wu, Lin-tao ^{[1
]}

Ding, Ying ^{[1
]}

Wang, Ze-hua ^{[1
]}

机构：

[1] Hohai Univ, Coll Mech & Mat, Nanjing 211100, Jiangsu, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2018年 / 25卷 / 04期

基金：

中国国家自然科学基金;

关键词：

precursor carbonization; tungsten carbide (WC); microstructure; in-situ formation mechanism; phase evolution; MICROSTRUCTURE CHARACTERISTICS; CARBONACEOUS PRECURSOR; COMPOSITE;

D O I：

10.1007/s12613-018-1589-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The precursor carbonization method was first applied to prepare W-C compound powder to perform the in-situ synthesis of the WC phase in a Fe-based alloy coating. The in-situ formation mechanism during the cladding process is discussed in detail. The results reveal that fine and obtuse WC particles were successfully generated and distributed in Fe-based alloy coating via Fe/W-C compound powders. The WC particles were either surrounded by or were semi-enclosed in blocky M7C3 carbides. Moreover, net-like structures were confirmed as mixtures of M23C6 and alpha-Fe; these structures were transformed from M7C3. The coarse herringbone M6C carbides did not only derive from the decomposition of M7C3 but also partly originated from the chemical reaction at the alpha-Fe/M23C6 interface. During the cladding process, the phase evolution of the precipitated carbides was WC -> M7C3 -> M23C6 + M6C.

引用

页码：439 / 443

页数：5

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