Microstructure and mechanical properties of Al2O3 - WC - Co composites obtained by spark plasma sintering

被引：22

作者：

Azevedo, Heytor V. S. B. ^{[1
,2
]}

Raimundo, Rafael A. ^{[2
,3
]}

Silva, David D. S. ^{[4
]}

Morais, Luis M. F. ^{[5
]}

Macedo, Daniel A. ^{[6
]}

Cavalcante, Danielle G. L. ^{[2
]}

Gomes, Uilame U. ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Norte, Mat Sci & Engn Postgrad Program PPGCEM, BR-59078970 Natal, RN, Brazil

[2] Univ Fed Paraiba, Mech Engn Postgrad Program PPGEM, BR-58051900 Joao Pessoa, Paraiba, Brazil

[3] Univ Fed Rio Grande do Norte, Dept Theoret & Expt Phys, BR-59078970 Natal, RN, Brazil

[4] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn, BR-13565905 Sao Carlos, Brazil

[5] Univ Fed Rio Grande do Norte, Mech Engn Postgrad Program PPGEM, BR-59078970 Natal, RN, Brazil

[6] Univ Fed Paraiba, Mat Sci & Engn Postgrad Program PPCEM, BR-58051900 Joao Pessoa, Paraiba, Brazil

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2021年 / 94卷

关键词：

Al2O3-WC-Co composites; High energy milling (HEM); SPS (spark plasma sintering); Mechanical properties; WEAR BEHAVIOR; TUNGSTEN CARBIDE; DENSIFICATION; TEMPERATURE; FABRICATION;

D O I：

10.1016/j.ijrmhm.2020.105408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work reports the Spark Plasma Sintering (SPS) of composites derived from a mixture of alumina (Al2O3), tungsten carbide (WC) and cobalt (Co) for applications in abrasive machining. Powders with nominal composition 80 wt% Al2O3-18 wt% WC - 2 wt% Co were processed by high energy milling and sintered at 1550 degrees C for 5 min. Specimens with apparent porosity of 1.15% and microhardness of 26.41 GPa were obtained. The analysis of the friction coefficient curve showed a variation of 0.54. The composite wear rate reached 1.978 x 10(-6) mm(3)/Nm. The surface roughness increased by 101.4% after the wear test.

引用

页数：6

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