Analysis on Calcination Process of WC-Co Precursor Powder

被引:1
|
作者
Yang, Qiumin [1 ,2 ]
Yang, Jiangao [2 ,3 ]
Ruan, Jianming [1 ]
Wu, Jie [3 ]
Ni, Guohua [3 ]
Ouyang, Tangzhe [4 ]
机构
[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China
[2] Adv Corp Mat & Equipments, Changsha 410118, Hunan, Peoples R China
[3] Minist Educ, Engn Res Ctr High Efficiency Dev & Applicat Techn, Ganzhou 341000, Peoples R China
[4] Hunan Univ, Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China
关键词
solution technique; WC-Co; thermal decomposition; calcination; ultrafine composite; TUNGSTEN CARBIDE POWDER; THERMAL-DECOMPOSITION; AMMONIUM PARATUNGSTATE; CARBURIZATION PROCESS; CEMENTED CARBIDES; SURFACE-AREA; REDUCTION; METAL; NANOCOMPOSITES; TEMPERATURE;
D O I
10.1007/s11106-016-9787-y
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
In this paper, calcination of WC-Co precursor powders with different Co contents prepared by solution technique was investigated. Thermal analysis was carried out. The precursor powders after calcination process were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). A mechanism of calcination of the precursor powder was proposed and substantiated by the experimental data. The mechanism was that carbon in Sample C (WC-3 wt.% Co) after calcination was provided only by the pyrolysis of soluble starch, while carbon in Sample A (WC-12 wt.% Co) was provided not only by the pyrolysis of soluble starch but also by the pyrolysis of methyl in acetate cobalt. The main phase after calcination was the mixture of WO3, CoO, and C. Moreover, ultrafine WC-Co composite powder was obtained after fast reduction-carbonization treatment. The morphology of WC-Co powder is hollow spherical granular structure where individual particles are cemented in the form of agglomerated ball and the mean particle size is 177 nm.
引用
收藏
页码:125 / 133
页数:9
相关论文
共 50 条
  • [31] Development of WC-Co Coatings Deposited by Warm Spray Process
    Chivavibul, Pornthep
    Watanabe, Makoto
    Kuroda, Seiji
    Kawakita, Jin
    Komatsu, Masayuki
    Sato, Kazuto
    Kitamura, Junya
    JOURNAL OF THERMAL SPRAY TECHNOLOGY, 2008, 17 (5-6) : 750 - 756
  • [32] Recovery of tungsten carbides to prepare the ultrafine WC-Co composite powder by two-step reduction process
    Liu, Baixiong
    Shi, Anhong
    Su, Qi
    Chen, Guangjun
    Li, Wei
    Zhang, Lina
    Yang, Bin
    POWDER TECHNOLOGY, 2017, 306 : 113 - 119
  • [33] Effect of TaC on plastic deformation of WC-Co and Ti(C, N)-WC-Co
    Östberg, G
    Buss, K
    Christensen, M
    Norgren, S
    Andrén, HO
    Mari, D
    Wahnström, G
    Reineck, I
    INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2006, 24 (1-2): : 145 - 154
  • [34] Morphology of WC grains in WC-Co alloys
    Lay, S.
    Allibert, C. H.
    Christensen, M.
    Wahnstrom, G.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 486 (1-2): : 253 - 261
  • [35] Rheological Properties Analysis of WC-Co Injection Feedstock
    Amin, Sri Yulis M.
    Muhamad, Norhamidi
    Jamaludin, Khairur Rijal
    ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES XV, 2014, 773-774 : 880 - +
  • [36] Nanoindentation of WC-Co hardmetals
    Duszova, Annamaria
    Halgas, Radoslav
    Bl'anda, Marek
    Hvizdos, Pavol
    Lofaj, Frantisek
    Dusza, Jan
    Morgiel, Jerzy
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2013, 33 (12) : 2227 - 2232
  • [37] Microstructure and properties of nano WC-Co cermets
    Seo, O
    Lee, GH
    Kang, SH
    PRICM 4: FORTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, VOLS I AND II, 2001, : 167 - 170
  • [38] Influence of μ-size WC on the Corrosion Behavior of Ultrafine WC/WC-Co Cemented Carbides
    Liu, Chao
    Liu, Yang
    Ma, Yunzhu
    Liu, Wensheng
    He, Yuehui
    JOURNAL OF SUPERHARD MATERIALS, 2019, 41 (05) : 334 - 344
  • [39] Change in relative density of WC-Co cemented carbides in spark plasma sintering process
    Sun Lan
    Lin Chenguang
    Jia Chengchang
    Jia Xian
    Xian Min
    RARE METALS, 2008, 27 (01) : 74 - 77
  • [40] Effect of Powder Characteristics on Properties of Warm-Sprayed WC-Co Coatings
    Pornthep Chivavibul
    Makoto Watanabe
    Seiji Kuroda
    Jin Kawakita
    Masayuki Komatsu
    Kazuto Sato
    Junya Kitamura
    Journal of Thermal Spray Technology, 2010, 19 : 81 - 88