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alloying (MA) in a planetary ball milling system using Ti-Al-TiO2 as raw materials. The experimental results show that, when the milling time increases up to 30 h, the hcp Ti(Al) supersaturated solid... Eur Ceram Soc, 1999, 19: 2415-2419. [2] GUAN Z Q, PFULLMANN TH, OEHRING M, BORMAN R. Phase formation during ball milling and subsequent thermal decomposition of Ti-Al-Si powder blends [J]. Journal......
Abstract: The amorphous boron powders with high activity were prepared by the high-energy ball milling-combustion synthesis method. The effects of the milling rate and milling time on the crystallinity...-energy ball milling can significantly refine boron powder particle sizes, whose average particle sizes are smaller than 50 nm, and specific surface areas are of up to 70.03 m2/g. When the transmission......
. It is found that the increase of Ni content significantly improves the gaseous and electrochemical hydrogen storage kinetic performances of as-milled alloys. Furthermore, as ball milling time changes...An Investigation on Hydrogen Storage Kinetics of the Nanocrystalline and Amorphous LaMg12-type Alloys Synthesized by Mechanical Milling张羊换1,2,WANG Jinglong1,2,ZHANG Peilong3,ZHU Yongguo3,HOU......
condition caused by the mechanical ball-milling. The synthesized La2O3 powder appears clearly separated spherical-like monodisperse nano-size particles in which particle size ranges from 30 to 50 nm. Key words:rare earths; nano sized powder; lanthanum oxide; mechanochemical reaction; ball milling; [全文内容正在添加中] ......
" name="ChDivSummary">Bulk metallic nickel–silicon carbide nano-particle(Ni–Si CNP) composites, with milling time ranged from8 to 48 h, were prepared in a planetary ball mill and sintered using a spark... agglomeration. The ball milling process resulted in the formation of nano-scale, ultra-fine grained(UFG) Ni–Si CNP composites when the milling time was extended for longer periods, greatly......
力学和动力学理论,求得晶界扩散激活能及稳定晶粒尺寸等参数,并分析讨论Fe-C纳米晶的晶粒稳定机制. 关键词:Fe-C合金；纳米晶；稳定性；机械球磨 中图分类号:TG111.5,TF123.21 文献标志码:A Preparation of Fe-1%C nanocrystalline by mechanical milling...: The particles of Fe-1%C (mole fraction) alloy with the single phase solid solution nanocrystalline were produced by mechanical milling. The influences of milling time on the particles morphologies......
High-frequency induction heated sintering of ball milled Fe-WC nanocompositesT. Zanganeh2,A. Najafi22. Department of Materials, Saveh Branch, Islamic Azad University, Saveh, Iran摘 要:Fe-WC nanocomposites were successfully fabricated by high-frequency induction heated sintering of ball milled nanostructure powders. The ball milled powders were......
Ni基高温自润滑涂层的显微结构及磨损性能 丁春华1,崔树茂1,丁秉钧1,刘春晖1,杨志懋1,王丽华1 (1.西安交通大学,陕西,西安,710049) 摘要:通过高能球磨,冷等静压及高频感应烧结在Ni基合金圆棒上成功制备HFIS304高温自润滑涂层.HFIS304成分(质量分数,下同)为NiCr (80/20)合金(60%),Cr_2O_3(20%),Ag(10%)和共晶BaF_2/CaF_2 (10%).HFIS304涂层组织致密,3种润滑相尺寸细小.研究表明,在室温到600 ℃的范围内,HFIS304涂层的耐磨性优于PS304涂层. 关键词:涂层; 高能球磨; 高频感应烧结; coating; high-energy ball milling; high-frequency induction sintering; [全文内容正在添加中] ......
渐下降,球磨20 h后,烧结样品的电导率下降到51%(IACS). 关键词:铜基粉末；第二相；高能球磨；电场活化烧结 中图分类号:TF124.5 文献标志码:A Influence of high-energy ball milling on structure and performance of Cu-10Cr-0.5Al2O3... fraction, %) powder mixtures were pretreated by high-energy ball milling and subsequently sintered by electric field activated sintering technique. The influence of milling time on the structure......
%. Milling operation considerably accelerates the leaching processs. With a combined milling and leaching, the maximum Ti extraction rate reaches 72%. The enhanced dissolution produced by planetary ball milling is mainly due to selectively mechanical activation of diopside. The simultaneous milling and leaching have a better comminution effect, which accelerate the dissolution of the perovskite......
