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; Abstract: Nano-crystalline pre-alloyed powders of W-Ni-Fe were fabricated by high energy ball milling mechanical alloying (MA) technique. The change of appearances and the crystallite sizes of powders before and after high energy ball milling were investigated by XRD, TOPAS P software, SEM and EDS. The results show......
, China) Abstract: An effective process consisting of spray drying, hydrogen reduction and subsequent ball milling was adopted to fabricate W/Cu three-layer functionally gradient material (FGM). The microstructures energy spectrum analysis and micro-penetration hardness were explored. The results show that the size and morphology of the powders can be controlled to improve the sintering activity......
refining [26], which directly affects the surface energy of the powders. In this work, four different ball milling time were used to prepare Ti-Ag alloy. The effect of ball milling time during powder..., no sintering neck could be observed from the pore walls of as-sintered porous Ti-3Ag alloys with 10 h ball milling time as the high surface energy promoted the densifying of the pore walls during the solid......
; nucleation; recombination; high-energy ball milling 1 Introduction The unique physical and chemical properties of hydrogen make it an outstanding energy carrier in the future out of public concern about...-type high-energy ball mill (Spex 8000D) with a tungsten carbide vial. The balls of 8 or 4 mm in diameter made of stainless steel (SUS316) were employed. All the handing of samples during milling......
and uniform microstructure. Key words: titanium aluminide; Ti2AlN, composites; high energy milling; hot press sintering 1 Introduction Intermetallic compounds of Ti-aluminides are of technological... K temperatures [6-7]. The mechanical alloying process by high-energy ball milling offers advantages for the fabrication of TiAl compounds and has been investigated in detail [8-10]. Ball milling......
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) Abstract: Synthesis of ultrafine WC-Co powders was investigated using WO3, Co3O4 and graphite powders as starting materials by high energy ball milling followed by reduction and carburization..., and the carburization reaction completes at 900℃ in 2h. The size of the WC grain in the final WC-Co composite powders is in the range of 200-300nm. Key words: WC-Co; high energy ball milling; reduction......
细钛粉;分散剂 中图分类号:TF123.7 文献标志码:A Ultrafine titanium powders for coatings prepared by high energy ball milling XIE Huan-wen, CAI Yi-xiang, TAN Li-xin, LIU Xin  ... powders, and the ball-to-powder ratio is the significant factor on increment of Fe content in Ti powders. Key words: high energy ball milling; ultrafine titanium powders; dispersant 钛与聚合物结合制备的涂料用于金属结构表面涂层......
, GUO Jing-kun, YANG Xie-long. Preparation of nanocrystalline Zn ferrite by high energy ball milling [J]. Chinese Journal of Materials Research, 1999, 13(2): 142-146. (in Chinese) [19] TANAKA H... Chemical Reviews, 2006, 75(3): 177-189. [10] CHEN Zhen-hua, CHEN Ding. Mechanical alloying and solid-liquid reaction milling [M]. Beijing: Chemical Industry Press, 2006: 439-440. (in Chinese) [11......
Dry ball milling and wet ball milling for fabricating copper-yttria compositesFei Huang1,2,Hang Wang3,Jin-Shui Chen1,Bin Yang41. School of Materials Science and Engineering, Jiangxi University... prepared by dry ball milling (DBM) and wet ball milling(WBM), respectively, followed by spark plasma sintering(SPS). It is to determine which milling process is better for fabricating Cu-Y2O3 composites......