共搜索到10025条信息，每页显示10条信息，共1003页。用时：0小时0分0秒505毫秒
......
particle reinforced steel matrix composites have intensified. Generally, there are two ways to obtain a high mass fraction of WC particles in steel: through casting method[5-7] or via powder metallurgy(P... the microstructure combined with the reinforcement of WC particles is free from macro segregations[17]. Compared with the traditional powder metallurgy route, the eletroslag melting casting process represents......
; Abstract: WC powder was injected onto the surface of Q235 steel by laser melt injection (LMI... coatings can be acquired by injecting WC powder onto the surface of Q235 steel. The microstructure in the coatings is complex, which consists of WC, W2C and M6C(Fe3W3C-Fe4W2C) phases. The difference......
J. Cent. South Univ. (2021) 28: 1206-1218 DOI: https://doi.org/10.1007/s11771-021-4690-1 Effects of niobium addition on microstructure and properties of CPM121 powder metallurgy high-speed... of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China; 2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China; 3. College of Materials Science......
and Compounds, 2008, 465(1): 157-162. [5] CORREA E O, SANTOS J N, Klein A N. Microstructure and mechanical properties of WC Ni-Si based cemented carbides developed by powder metallurgy[J]. International...DOI:10.19476/j.ysxb.1004.0609.2018.09.11 Fe/Ni比对WC-Fe-Ni硬质合金微观组织及性能影响 张稳稳,罗兵辉,高 阳,柏振海 (中南大学 材料科学与工程学院,长沙 410083) 摘 要:在1450 ℃下低压烧结制备5 种不同Fe/Ni比(质量比)的WC-Fe-Ni硬质合金,通过SEM,TEM,XRD,力学性能测试和电化学测试......
WC–9Co cemented carbides; TaC; Ta content; W content 1 Introduction WC-Co cemented carbide consists of hard phase WC embedded in ductile phase Co, which is prepared usually by a powder metallurgy...]. International Journal of Refractory Metals & Hard Materials, 2001, 19: 397-403. [21] SCHUBERT W D, BOCK A, LUX B. General aspects and limits of conventional ultrafine WC powder manufacture and hard metal......
......
PREPARING NANO-CRYSTALLINE La DOPED WC/Co POWDER BY HIGH ENERGY BALL MILLING D.Zou1,S.Liu2,Y.X.Li1,D.Q.Yi2 (1.Hunan Yin Zhou Nonferrous Metals Hi.-Tech. Limited Company, Changsha 410083, China;2.School of Materials Science & Engineering, Central South University, Changsha 410083, China) Abstract:The La doped WC/Co powder was prepared by high energy ball milling. The changesof crystal structure......
WC粉分级及用分级WC制造硬质合金的研究邹序枚自贡硬质合金厂科研所 自贡 643011摘 要:用筛分法对粗颗粒WC粉进行了分级试验,讨论了不同粒级的WC粉与其总碳含量及粉末显微组织的关系;用不同粒级的WC粉作了硬质合金的工艺试验,探讨了分级WC粉对合金性能和显微组织的影响.关键词:粗WC粉;筛分分级;显微组织;物理性能;......
University, Nanchang 330031, China Received 22 July 2019; accepted 7 May 2020 Abstract: The effects of additives (polyethylene glycol (PEG), sodium dodecyl sulfate (SDS)) and WC nano-powder... in the additive content. When the electroplating solution contained 10 g/L WC nano- powder, 0.2 g/L PEG and 0.1 g/L SDS, the WC-Cu composite exhibited hardness of HV 221 and electric conductivity......
