Preparation of polycrystalline cubic boron nitride compact by high-pressure infiltration using cemented carbide

被引：6

作者：

Jia, H. S. ^{[1
]}

E, Y. L. ^{[1
]}

Li, J. ^{[1
]}

Jia, X. P. ^{[2
]}

Ma, H. A. ^{[2
]}

Liu, F. Z. ^{[1
]}

Liu, L. H. ^{[1
]}

Li, H. B. ^{[1
]}

机构：

[1] Jilin Normal Univ, Key Lab Funct Mat Phys & Chem, Minist Educ, Siping 136000, Peoples R China

[2] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2013年 / 41卷

关键词：

HPHT; PcBN compact; Infiltrating method; Cemented carbide; CUTTING-TOOL; CBN; AL;

D O I：

10.1016/j.ijrmhm.2013.02.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polycrystalline cubic boron nitride (PcBN) compacts, using the infiltrating method in situ by cemented carbide (WC-Co) substrate, were sintered under high temperature and high pressure (HPHT, 5.2 GPa, 1450 degrees C for 6 min). The microstructure morphology, phase composition and hardness of PcBN compacts were investigated by using scanning electron microscope (SEM), X-ray diffraction (XRD) and energy dispersive spectrometer (EDS). The experimental results show that the WC and Co from WC-Co substrate spread into cubic boron nitride (cBN) layer through melting permeability under HPHT. The binder phases of WC, MoCoB and CO3W3C realized the interface compound of PcBN compact, and the PcBN layer formed a dense concrete microstructure. Additionally the Vickers hardness of 293 GPa and cutting test were performed when sintered by using cBN grain size of 10-14 mu m. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：138 / 142

页数：5

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