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of adding metal carbide, oxide, nitride, boride and their co-additives on the microstructure, properties and applications of WC cemented carbides were summarized. The differences of inhibiting effects...]. 金刚石与磨料磨具工程, 2018, 38(4): 50-55, 60. LIN Liangliang. Evolution of microstructure and high temperature hardness in WC- xTaC-Co cemented carbides[J]. Diamond & Abrasives Engineering, 2018, 38(4......
; 文献标志码:A 文章编号:1672-7207(2010)02-0521-05 Microstructure and properties of WC-10%Co cemented carbides with plate-like WC grains LI Zhi-lin, ZHU Li-hui (Shanghai Key Laboratory of Modern Metallurgy & Materials Processing, Shanghai University, Shanghai 200072, China) Abstract: WC-10%Co (mass fraction) cemented carbides with plate-like WC......
度,硬度呈现梯度分布,细晶层一侧的WC晶粒粗化,Co相平均自由程增大,硬度下降;粗晶层一侧的硬度上升;合金两侧的WC颗粒均处于非平衡状态.液相烧结时,界面两侧都有从外界吸入液态钴相以便使WC颗粒达到平衡状态的趋势,由于溶解-析出机制的作用,细晶侧的WC颗粒溶解后通过界面在粗晶侧的WC颗粒上析出,从而使粗晶侧的WC长大并达到平衡状态;与粗晶侧的WC相比,细晶侧的WC颗粒处于更加不稳定的状态,因此,粗晶侧的液态钴相流向细晶侧,使细晶侧的WC骨架发生重组而达到稳定状态. 关键词: 硬质合金; 层状材料; 梯度结构 中图分类号:TF125.2 文献标识码:A 文章编号: 1672-7207(2005)03-0349-05 Gradient structure of coupled cemented carbides with different WC grades YANG......
and hot-press sintering processes[J]. Materials Science and Engineering A, 2014, 618: 56-62. [5] UHRENIUS B, PASTOR H, PAUTY E. On the composition of Fe-Ni-Co-WC-based cemented carbides[J]. International... Journal of Refractory Metals & Hard Materials, 2008, 26(3): 232-241. [7] HUANG S G, LI L, VANMEENSEL K, BIEST O V, VLEUGELS J. VC, Cr3C2 and NbC doped WC-Co cemented carbides prepared by pulsed......
,就能引起WC晶粒的明显长大. 表3 低压烧结温度对矫顽磁力的影响 Table 3 Effect of sintering temperature on coercive force of cemented carbides 图5 W-C-Co三元系状态图沿Co-WC线的垂直截面 Fig.5 Phase diagram of WC-Co... on Co powder morphology[J]. Rare Metals and Cemented Carbides, 2002, 3(2): 15-18. [18] 高 晋, 陈青林. 活性球化剂对草酸钴形貌的影响[J].稀有金属与硬质合金, 2001, 146: 20-22.GAO Jin, CHEN Qing-lin. Influence of active......
below 10%, the graded composite behaves essentially like an elastic solid[19], and there is no plastic deformation. The cobalt content was less than 10%, therefore plastic deformation of WC-Co cemented... of cobalt-gradient structure in WC-Co hard alloy[J]. Journal of Materials Science, 2004, 39: 4397-4399. [15] TANG W, WANG Q, WANG S, LU F. Adherent diamond coating on cemented carbide substrates......
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during the sintering process of ultrafine and near-nano (also called super ultrafine) WC-Co cemented carbides [1-4]. And it was reported that rare earth oxide has an ability in inhibiting... of alloys A to G Table 3 Composition and properties of H10N and H10P cemented carbides of Sandvik Hard Materials [21] CHRISTENSEN et al [22] predicted WC grain morphology in WC-Co alloy from interface......
]. Therefore, research on ultrafine-grained and nanocrystalline WC-Co cemented carbides has become one of the hot issues in the field of high-performance hard materials over the last decade. The main application of the ultrafine-grained WC-Co cemented carbides is the production of micro-drills and routers for printed circuit board (PCB), which can promote the development of many industrial......
]. Materials Science and Engineering A, 2002, 325(1): 163-176. [21] WEIDOW J, OLSSON E, H. Chemistry of binder phase grain boundary in WC-Co based cemented carbide[J]. International Journal... Lei, CHEN Wen, SUN Hai-shen, XIE Chuan-di, LI Guo-ping, GUO Li-bo. Effects of TiC contents on microstructure and properties of steel-bonded cemented carbide[J]. Rare Metals and Cemented Carbides, 2016......
