共搜索到2660条信息，每页显示10条信息，共266页。用时：0小时0分0秒513毫秒
with varying milling time indicate that this fabrication process requires considerable mechanical energy. It is shown that Al2Ti–Al2O3 IMC with small grain size was produced by DMM after 15 h of ball milling...Fabrication of an r-Al2Ti intermetallic matrix composite reinforced with α-Al2O3 ceramic by discontinuous mechanical milling for thermite reactionA.Mosleh1,M.Ehteshamzadeh1,R.Taherzadeh Mousavian21......
Science and Engineering, 1997, 119(4): 655-663. [2] Takashi M. Effect of tool stiffness upon tool wear in high spindle speed milling using small ball end mill[J]. Journal of the International Societies for Precision Engineering and Nanotechnology, 2001, 25(2): 145-154. [3] Kim G M, Cho P J, Chu C N. Cutting force prediction of sculptured surface ball-end milling using Z-map[J]. International......
Al粉为天津光复精细化工研究所出品,纯度＞99.9%,C4H4N4为麦卡希试剂公司出品,纯度＞98%.球磨在自制的等离子体辅助振动球磨装置[17]上进行,其结构如图1所示.所用球磨罐及磨球均为不锈钢材质,球磨机的振动频率为16 Hz,振幅为10 mm双振幅,球料质量比为60:1.等离子体辅助球磨 (Plasma assisted ball milling,简称辅助球磨,PM)时,等离子体电源放电参数为:放电电压37 kV,频率14 kHz.为了与普通球磨工艺对比,在其他球磨参数相同的情况下,关闭等离子体放电电源,进行没有等离子体辅助的普通球磨(Conventional ball milling,CM).在手套箱中将Al粉与C4H4N4按摩尔比4:1混合装入球磨罐,手套箱中为0.1 MPa的高纯Ar,保证等离子体辅助球磨的放电气体为0.1 MPa的高纯Ar.为了减少高能球磨引入的铁污染,在试验......
Trans. Nonferrous Met. Soc. China 29(2019) 2117-2127 Effect of thermal treatment and ball milling on microstructure and phase transformation of Ni-Mn-Ga-Nb alloys Jun-song WANG1,2, Bing TIAN1,2, Yun... transformation evolution of Nb-doped Ni-Mn-Ga bulk alloys after aging and ball milling, the microstructure and phase transformation of the aged and ball-milled dual-phase Nb-doped Ni-Mn-Ga alloys were......
high quality titanium based nanomaterials to effectively control its morphology, structure and cost. Ball milling and acid solution treatment of natural ilmenite result in the products of TiO2 ... they are used as an anode material for the lithium-ion batteries. A method which includes ball milling, annealing and acid leaching to obtain porous TiO2 from ilmenite has been demonstrated. The porous......
......
. 图6 碱性介质下球磨预处理对烟灰中As浸出强化作用及As含量分析 Fig. 6 Effect of ball milling with addition of NaOH on arsenic leaching efficiency(a) and As content in leaching residues(b) 2.3 碱性介质下球磨预处理强化As浸出机理... before(a) and after(b) ball milling 2.3.3 球磨预处理前后晶体结构的变化 表2 球磨前后铜冶炼烟灰粒径及比表面积变化 Table 2 Variation of particle size and specific surface area of soot before and after ball milling 图8......
卵磷脂对磁性微胶囊性能的影响邵金凤,张思超,罗春荣,赵晓鹏西北工业大学应用物理系智能材料实验室摘 要:以亲油性的TiO2和Fe3O4为显示颗粒,SDS,span80为乳化剂,变压器油为分散介质,卵磷脂为分散剂,制备了分散性良好的悬浮液.以上述悬浮液为囊芯材料,明胶-阿拉伯树胶为壁材,采用复合凝聚法制备了磁性微胶囊.实验发现,卵磷脂对多相囊芯的稳定和乳化有促进作用,滴酸速度,搅拌速度,SDS及卵磷脂的量影响微胶囊大小及成壁,TiO2和Fe3O4不同质量比影响显示效果.关键词:复合凝聚法;磁性微胶......
......
particles fractured extensively during the ball milling of Al-15Sr/Al-4B powder mixtures. There was no interaction between the Al4Sr and AlB2 compounds across the section of the aluminium grains in the as-milled state. SrB6 formed, when the ball milled powder blends were subsequently annealed at sufficiently high temperatures. Ball milling for 1 h was sufficient for SrB6 to become the major......
