Improved electrochemical and mechanical performance of WC-Co cemented carbide by replacing a part of Co with Al2O3

被引：42

作者：

Fazili, Ali ^{[1
]}

Derakhshandeh, Mohammad Reza ^{[1
]}

Nejadshamsi, Shayan ^{[2
]}

Nikzad, Leila ^{[1
]}

Razavi, Mansour ^{[1
]}

Ghasali, Ehsan ^{[1
]}

机构：

[1] Mat & Energy Res Ctr, Dept Ceram, Karaj, Iran

[2] Amirkabir Univ Technol, Dept Mech Engn, Tehran, Iran

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 823卷

关键词：

WC-Co; Al2O3; Cemented carbide; Corrosion; Mechanical properties; SPARK PLASMA; ANODIC POLARIZATION; CORROSION BEHAVIOR; GRAIN-SIZE; FRACTURE-TOUGHNESS; FILMS; MICROSTRUCTURE; COMPOSITES; HARDMETALS; STRENGTH;

D O I：

10.1016/j.jallcom.2020.153857

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, WC/xCo/6-xAl(2)O(3) (x = 1, 2, 3 and 6 wt%) composites were fabricated through spark plasma sintering. The electrochemical and mechanical properties of the composites were comparatively investigated. Comparison of the hardness values indicated that by decreasing the cobalt content (from 6 to 1 wt%), the hardness of the composite increased. Also, by reducing the amount of Co from 6 wt% to 1 wt%, the corrosion potential of the samples increased while the corrosion current density decreased. FESEM images after corrosion test revealed that WO3 nano-flakes were formed on surface of the composites containing 3 wt % Co and 6 wt% Co. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：11

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