Comparative study of WC-based hard alloys fabrication via spark plasma sintering using Co, Fe, Ni, Cr, and Ti binders

被引：41

作者：

Shichalin, O. O. ^{[1
,2
]}

Buravlev, I. Yu. ^{[1
,2
]}

Papynov, E. K. ^{[1
,2
]}

Golub, A. V. ^{[1
]}

Belov, A. A. ^{[1
,2
]}

Buravleva, A. A. ^{[2
]}

Sakhnevich, V. N. ^{[2
]}

Dvornik, M. I. ^{[3
]}

Vlasova, N. M. ^{[3
]}

Gerasimenko, A. V. ^{[1
]}

Reva, V. P. ^{[2
]}

Yudakov, A. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Far Eastern Branch, Inst Chem, 159,Prosp 100 Letiya Vladivostoka, Vladivostok 690022, Russia

[2] Far Eastern Fed Univ, 10 Ajax Bay, Vladivostok 690922, Russia

[3] Russian Acad Sci, Far Eastern Branch, Inst Mat Sci, 153 Pacific St, Khabarovsk 680042, Russia

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2022年 / 102卷

关键词：

Hard materials; Hard alloy; Tungsten carbide; Chromium binder; Titanium binder; Spark plasma sintering (SPS; SPS-RS); GRAINED TUNGSTEN-CARBIDE; MECHANICAL-PROPERTIES; DENSIFICATION MECHANISM; OXIDATION BEHAVIOR; CEMENTED CARBIDES; ELECTRIC-FIELD; NECK FORMATION; MICROSTRUCTURE; TEMPERATURE; FREQUENCY;

D O I：

10.1016/j.ijrmhm.2021.105725

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The paper presents a method of fabrication and a comparison of the characteristics of obtained cemented carbide samples based on tungsten carbide with 10% metal binder. They were synthesized by spark plasma sintering (SPS) at different sintering temperatures: Co (1200 degrees C), Fe and Ni (1150 degrees C), Cr (1500 degrees C), and Ti (1400 degrees C). During the SPS-consolidation process, investigations of the dilatometric characteristics of samples of starting powders of identical granulometric composition obtained by mixing/grinding resulting in the fractional composition in the particle size range up to 10 mu m are presented. The mechanism of phase formation and microstructure of the obtained materials is investigated by XRD, SEM, and EDS. The possibility of synthesizing hard alloys WC - 10%Ti and WC - 10% Cr by the mechanism of reaction SPS synthesis with a reduction in the synthesis time in comparison with traditional sintering methods has been demonstrated. Analyses have shown that during sintering of alloys containing Ti and Cr the volume content of WC decreases to 47% because of dissolution and interaction, while in alloys containing Co, Ni, and Fe, the volume content of WC remains unchanged (85-86%). This led to a dramatic change in hardness, fracture toughness, and strength when replacing Co, Ni, or Fe with Ti or Cr.

引用

页数：12

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