Microstructure and mechanical properties of WC-Co, WC-Co-Cr3C2 and WC-Co-TaC cermets fabricated by spark plasma sintering

被引：50

作者：

Siwak, P. ^{[1
]}

Garbiec, D. ^{[2
]}

机构：

[1] Poznan Univ Tech, Inst Mech Technol, 3 Piotrowo St, PL-60965 Poznan, Poland

[2] Met Forming Inst, 14 Jana Pawla 2 St, PL-61139 Poznan, Poland

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2016年 / 26卷 / 10期

关键词：

spark plasma sintering; cermet; chromium carbide; tantalum carbide; mechanical properties; CEMENTED CARBIDES; STAINLESS-STEEL; HARD MATERIALS; SURFACE-LAYER; NANO POWDERS; MICROHARDNESS; HARDMETALS; VC;

D O I：

10.1016/S1003-6326(16)64390-X

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Spark plasma sintering was successfully used to produce WC-Co cermets with the addition of Cr3C2 and TaC grain growth inhibitors. The spark plasma sintered compacts were investigated by scanning electron microscopy, X-ray diffraction analysis, density measurements, hardness tests, fracture toughness tests and elastic modulus tests. The results were compared with an inhibitor-free WC-Co cermet consolidated under the same process parameters. By using Cr3C2 and TaC additives, it is possible to improve the hardness and fracture toughness of WC-Co cermets, but Cr3C2 has better grain growth inhibition property than that of TaC. The best combination of hardness (HV30 (2105 +/- 38)) and fracture toughness ((8.3 +/- 0.2) MPa m(1/2)) was obtained by the WC-5Co-2Cr(3)C(2) cermet.

引用

页码：2641 / 2646

页数：6

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