Material properties of tungsten carbide-alumina composites fabricated by spark plasma sintering

被引：13

作者：

Chen, Wei-Hsio ^{[1
]}

Lin, Hao-Tung ^{[2
]}

Nayak, Pramoda K. ^{[1
,3
]}

Huang, Jow-Lay ^{[1
,4
,5
,6
]}

机构：

[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 701, Taiwan

[2] Kun Shan Univ, Dept Mat Engn, Tainan 710, Taiwan

[3] Natl Tsing Hua Univ, Dept Elect Engn, Hsinchu 30013, Taiwan

[4] Natl Cheng Kung Univ, Ctr Micro Nano Sci & Technol, Tainan 701, Taiwan

[5] Natl Cheng Kung Univ, Res Ctr Energy Technol & Strategy, Tainan 701, Taiwan

[6] Natl Univ Kaohsiung, Dept Chem & Mat Engn, Kaohsiung 811, Taiwan

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 09期

关键词：

Composites; Spark plasma sintering; Metal-organic chemical vapor deposition (MOCVD); Electrical resistivity; MECHANICAL-PROPERTIES; MICROSTRUCTURE;

D O I：

10.1016/j.ceramint.2014.06.102

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The densification behavior of WC-Al2O3 composites prepared via spark plasma sintering (SPS) was investigated. The initial materials were fabricated using a metal-organic chemical vapor deposition process in which W(CO)(6) was used as a precursor and Al2O3 powder was used as the matrix in a spouted bed. The decomposed W(CO)(6) produced W species that coated Al2O3. Then, carburization, using a mixture of CH4-H-2 gas, was used to form tungsten carbide alumina composite powder. This powder was sintered via SPS in the temperature range of 1200-1350 degrees C, which produced several secondary phases, namely W, WC, and W2C. At the highest sintering temperature (1350 degrees C), the intermediate phase WC decomposed to form W2C. The material properties of the SPS-treated samples, including density, hardness, and electrical resistivity, were investigated. The hardness and electrical resistivity of WC-Al2O3 composites were found to be approximately 22.4 GPa and 4.9 x 10(9) Omega cm, respectively. (c) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：15007 / 15012

页数：6

共 24 条

[1] Microstructures of binderless tungsten carbides sintered by spark plasma sintering process [J].

Cha, SI ;

Hong, SH .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 356 (1-2) :381-389

[2] Spark plasma sintering behavior of nanocrystalline WC-10Co cemented carbide powders [J].

Cha, SI ;

Hong, SH ;

Kim, BK .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 351 (1-2) :31-38

[3] Chromia microspheres by the sol-gel technique [J].

Chatterjee, M ;

Siladitya, B ;

Ganguli, D .

MATERIALS LETTERS, 1995, 25 (5-6) :261-263

[4] MICROSTRUCTURE AND MECHANICAL-PROPERTIES OF CR3C2 PARTICULATE-REINFORCED AL2O3 MATRIX COMPOSITES [J].

FU, CT ;

WU, JM ;

LI, AK .

JOURNAL OF MATERIALS SCIENCE, 1994, 29 (10) :2671-2677

[5] Pulsed electric current sintering and characterization of ultrafine Al2O3-WC composites [J].

Huang, Shuigen ;

Vanmeensel, Kim ;

Van der Biest, Omer ;

Vleugels, Jef .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (03) :584-589

[6]

Hugh O., 1996, PIERSON HDB REFRACTO

[7] Synthesis of nanosized tungsten carbide powder by the chemical vapor condensation process [J].

Kim, JC ;

Kim, BK .

SCRIPTA MATERIALIA, 2004, 50 (07) :969-972

[8]

Kotelnikov P., 1969, HDB EXTREMELY HIGH M

[9] Tungsten chemical vapor deposition using tungsten hexacarbonyl: microstructure of as-deposited and annealed films [J].

Lai, KK ;

Lamb, HH .

THIN SOLID FILMS, 2000, 370 (1-2) :114-121

[10] Cr3C2 and VC doped WC-Si3N4 composites prepared by spark plasma sintering [J].

Li, Yuanyuan ;

Zheng, Donghai ;

Li, Xiaoqiang ;

Qu, Shengguan ;

Yang, Chao .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2013, 41 :540-546

← 1 2 3 →