Preparation of Stoichiometric Boron-Carbon Ceramics by Spark Plasma Sintering

被引：0

作者：

Zhang Song ^{[1
]}

Chen Gang ^{[1
]}

Wang Chuanbin ^{[1
]}

Shen Qiang ^{[1
]}

Zhang Lianmeng ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2009年 / 38卷

关键词：

SPS; boron-carbon ceramic; stoichiometry; CARBIDE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, boron-carbon ceramics with different stoichiometries ((BC)-C-x, x: 3 similar to 10) were prepared by spark plasma sintering technique (SPS) from high purity elemental boron and graphite powders. X-ray diffraction (XRD), chemical analysis (CA) and transmission electron microscopy (TEM) were employed to examine the phase, B/C atomic ratio and microstructure of the samples, respectively. The results show that the related density of all the samples reached 90% and the main phases were boron carbide (B13C2) with different amounts of free carbon. With increasing molar ratio of boron to carbon, the amount of free carbon decreased and the discrepancy in theoretical and tested stoichiometry was observed. The boron-carbon ceramics with different stoichiometries showed a fine structure with grain size about 1 mu m.

引用

页码：1007 / 1009

页数：3

共 11 条

[1] THE CORRELATION BETWEEN THE THERMOELECTRIC PROPERTIES AND STOICHIOMETRY IN THE BORON-CARBIDE PHASE B4C-B10.5C [J].

BOUCHACOURT, M ;

THEVENOT, F .

JOURNAL OF MATERIALS SCIENCE, 1985, 20 (04) :1237-1247

[2]

BOUCHACOURT M, 1981, BORON BORIDES RELATE, V9, P227

[3]

Fu B, 1997, ATOM ENERGY SCI TECH, V31, P400

[4] Photoemission and x-ray-absorption study of boron carbide and its surface thermal stability [J].

Jimenez, I ;

Sutherland, DGJ ;

van Buuren, T ;

Carlisle, JA ;

Terminello, LJ ;

Himpsel, FJ .

PHYSICAL REVIEW B, 1998, 57 (20) :13167-13174

[5] Sintering of boron and boron carbide [J].

Kalandadze, GI ;

Shalamberidze, SO ;

Peikrishvili, AB .

JOURNAL OF SOLID STATE CHEMISTRY, 2000, 154 (01) :194-198

[6]

LI P, 1994, J XIAN JIAOTONG U, V28, P55

[7] Oxidation of boron carbide at high temperatures [J].

Steiribrück, M .

JOURNAL OF NUCLEAR MATERIALS, 2005, 336 (2-3) :185-193

[8] Chemical structure and micro-mechanical properties of ultra-thin films of boron carbide prepared by pulsed-laser deposition [J].

Sun, J ;

Ling, H ;

Pan, WJ ;

Xu, N ;

Ying, ZF ;

Shen, WD ;

Wu, JD .

TRIBOLOGY LETTERS, 2004, 17 (01) :99-104

[9] BORON-CARBIDE STRUCTURE BY RAMAN-SPECTROSCOPY [J].

TALLANT, DR ;

ASELAGE, TL ;

CAMPBELL, AN ;

EMIN, D .

PHYSICAL REVIEW B, 1989, 40 (08) :5649-5656

[10]

YAN X, 2006, APPL PHYS LETT, V88, P131

← 1 2 →