共搜索到21925条信息，每页显示10条信息，共2193页。用时：0小时0分0秒354毫秒
that the liquid phase fluidity indexes of iron ores with different SiO2 contents are inconsistent with the sintering actual production, a new improved method based on n(Fe2O3)/n(CaO) was proposed to add CaO (N..., the optimizing ore blending-sintering pot tests were investigated. The results show that the liquid phase fluidity indexes measured by R value method have obvious linear positive correlation with SiO2......
and silicate. The individual fired pellets are hardened by solid phase diffusion and the racemose sinter are consolidated by both solid phase diffusion and liquid phase bonding, the latter is 30% in sinter. Key words: chromite concentrate; pellet sintering process; wet ball milling; solid diffusion consolidation; liquid phase bonding 铬铁矿是生产铬铁合金的重要原料.但是,我国铬矿资源贫乏,保有储量仅占世界储量的0.15%,95% 铬铁矿依靠进口,进口量达302万......
Trans. Nonferrous Met. Soc. China 22(2012) 124-128 Effect of sintering atmosphere on phase composition and mechanical properties of 5Ni/(10NiO-NiFe2O4) CHEN Duan, ZOU Zhong, TIAN Zhong-liang, XIN...: 5Ni/(10NiO-NiFe2O4) cermet materials were prepared by cold pressing sintering method in different atmospheres. The phase compositions were studied by XRD, microstructure was studied by SEM......
according to the binary phase diagram of W and Ni. Despite no direct evidences of these brittle phases are obtained from TEM observes, we believe that it is possible because the sintering temperature... of nanocrystalline tungsten powders on the microstructure and properties of liquid-phase sintered 93W alloys [J]. Materials Science and Technology, 2006, 14(4): 385-389. [2] HONG S H, RYU H J. Combination......
in liquid phase sintering, the center of the ring structure is TiC or WC. It can be seen from the EDS spectra (Table 2) of spot A in Fig.1(b) that a layer of about 10 μm thickness, having higher carbon...-Ni and TiC-Mo2C-Ni cermets during liquid phase sintering[J]. Materials Transactions JIM, 1991, 32(10): 951-956. [7] CHUN D I, KIM D Y, EUN K Y. Microstructural evolution during the sintering of TiC......
号: TB321; TQ174.1 文献标识码: A Migration of liquid phase and grain growth in low-temperature sintering of AlN FU Ren-li1, YANG Ke-tao1, XIONG Dang-sheng2, QIAO Liang3, ZHOU He-ping3 (1. College... (Y3Al5O12, Y4Al2O9) migrates at the surface of AlN with carbon from the graphite-heating element under nitrogen atmosphere. Key words: low-temperature sintering; liquid phase migration; grain growth; AlN......
......
Effects of nano-AlN on phase transformation of low temperature vitrified bond during sintering process SHANG Yong(尚 勇)1, HOU Yong-gai(侯永改)1,2, QIAO Gui-ying(乔桂英)3, ZOU Wen-jun(邹文俊)2... studied. Furthermore, the phase transformation during sintering process was investigated by means of thermo-gravimetric analysis (TG), differential thermal analysis (DTA) and X-ray diffraction (XRD......
几种常见进口铁矿石的烧结基础性能吴浩方1,贾彦忠2,梁德兰2(1.江苏省南京市宝钢梅山钢铁公司 2.北京科技大学 冶金与生态工程学院,北京 100083)摘 要:根据中国常见进口铁矿石种类,选择了8种进口铁矿石进行烧结基础性能研究,包括同化性,铁酸钙生成能力和液相流动性.探讨了烧结原料基础性能与铁矿石物理化学性能之间的关系.随着铁矿石中TFe含量的增加,A/S和Ig的降低,同化温度有增加的趋势.铁酸钙的生成能力随着Al2O3含量和A/S的增加而增多.随着SiO2含量的提高,Al2O3含量和A/S的降低,其液相流......
; accepted 5 January 2012 Abstract: In order to develop the liquid phase sintering process of WC-Ni3Al-B composites, the preparation process of WC+Ni3Al prealloyed powder by reaction synthesis...: WC-Ni3Al-B composites; Ni3Al intermetallic; liquid phase sintering; mechanical properties 1 Introduction Cemented carbide, such as WC-Co, is generally considered an adequate combination of strength......
