Study of characteristics and properties of spark plasma sintered WC with the use of alternative Fe-Ni-Nb binder as Co replacement

被引：16

作者：

Borges Rosa, Joice Medeiros ^{[1
]}

Lugon, Rafael Delorence ^{[1
]}

Silva, Keytiane de Souza ^{[1
]}

das Chagas, Victor Muniz ^{[1
]}

Guimaraes, Renan da Silva ^{[1
]}

de Carvalho, Cassio Santos ^{[2
]}

de Paiva Barreto, Lucas Pires ^{[3
]}

Filgueira, Marcello ^{[1
]}

机构：

[1] Northern Fluminense State Univ UENF, Ctr Sci & Technol, Lab Adv Mat, 2000 Alberto Lamego Ave, BR-28013602 Campos Dos Goytacases, Brazil

[2] Fed Inst Espirito Santo, Dept Met Technol, IFES, Espirito Santo, ES, Brazil

[3] Univ Fed Rio Grande do Norte, Dept Chem Engn, UFRN, Natal, RN, Brazil

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2020年 / 92卷

关键词：

Alternative binder; Spark plasma sintering; Microstructure; Mechanical properties; Thermal properties; MECHANICAL-PROPERTIES; GRAIN-GROWTH; MICROSTRUCTURE; METAL; COMPOSITE; NANOINDENTATION; HARDNESS; NIOBIUM; PHASES;

D O I：

10.1016/j.ijrmhm.2020.105316

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Most of all WC-based cemented carbides use cobalt as binder due to the excellent strength and ductility that this combination provides. Motivators to find alternative binders have been related to factors such as the shortage and price oscillations of the cobalt and toxicity of the WC-Co system. In this work, Fe-Ni-Nb was used as alternative binder for WC sintered via spark plasma sintering (SPS) technique. The composites were sintered at different sintering temperatures (1100 degrees C, 1200 degrees C and 1300 degrees C). In addition, WC-Co was sintered at 1200 degrees C via SPS for comparison purposes. X-ray diffraction and Scanning electron microscopy (SEM) were employed as characterization methods to investigate the crystalline phase's formation, sintering effectiveness, porosity and phase distribution. Mechanical properties such as Vickers hardness, fracture toughness, nanohardness, elastic modulus and thermal properties (thermal expansion coefficient) were evaluated. The results demonstrate Fe-Ni-Nb as a viable alternative binder to cobalt in hardmetal applications.

引用

页数：8

共 49 条

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