共搜索到3694条信息，每页显示10条信息，共370页。用时：0小时0分0秒831毫秒
thermal error of a preloaded ball screw on a gantry milling machine [J]. Journal of Manufacturing Science and Engineering, 2017, 140(2): 021004. DOI: 10.1115/1.4037236. [25] NGUYEN T L, RO S K, PARK J... J. Cent. South Univ. (2021) 28: 1357-1376 DOI: https://doi.org/10.1007/s11771-020-4537-1 Precision loss of ball screw mechanism under sliding-rolling mixed motion behavior QI Bao-bao(齐宝宝)1, 2......
SA的添加加剧了这种变化趋势.同时,球磨改性起到了很好地消除超细粉末团聚,提高松装密度的作用,而SA的添加使得粉末的粒径分布更加均匀且松装密度更高.Zeta电位值变化表明:球磨改性使得粉末颗粒间相互排斥力增大,有利于粉末的稳定分散,且不产生二次团聚.关键词:超细98W-1Ni-1Fe；球磨改性；表面活性剂；粉末性能Effect of ball milling modification... University, Changsha 410083, China)Abstract:The effect of ball milling modification time and surfactant addition on the properties of ultrafine 98W-1Ni-1Fe used for powder injection molding was investigated......
Mg-3Ni-2MnO2 and Mg-3Ni-2MnO2-3Al-Zn were made by ball milling process under hydrogen atmosphere. The XRD results and TEM analysis reveal that Al and Zn additives almost have no effect on the grain size...), by adding beneficial elements to hydrogen storage materials. Key words: nanocrystalline; magnesium alloy; hydrogenation-disproportionation-desorption-recombination(HDDR); ball milling ......
, Triammonium citrate, β-Alanine) on the stability of ITO suspension prepared by ball milling dispersion were studied. The influences of dispersing time and dispersant content on stability of ITO...) and optimal ball milling dispersion time is 48 h. The sequence of effects of these three dispersants on the stability of ITO suspension is PVP＞β-alanine＞triammonium citrate, which is in agreement......
University, Changsha 410083, China; 2. Hunan Research Institute of Nonferrous Metals, Changsha 410015, China) Abstract: Indium tin oxide(ITO) aqueous suspension was prepared through ball milling dispersion using Methyl cellulose (MC) as dispersant. The effects of MC dosages , ITO content and ball milling dispersion time on stability of ITO aqueous suspension were investigated．And the functional......
Bulk Al/SiC nanocomposite prepared by ball milling and hot pressing method GU Wan-li(谷万里) School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China Received 10... an effective approach for synthesizing bulk Al based nanocomposite. 2 Experimental In order to investigate the ball milling behaviours of the mixture affected by the difference of the SiC particle size......
146 文献标识码:A Morphology transformation of carbon nanotubes mixed with copper powder during mechanical ball milling process GU Wan-li, SHENG Wen-bin (School... by mechanical ball milling process for different milling times. The morphology transformation of carbon nanotubes during ball milling process was observed by SEM and TEM, respectively. The results show......
Effect of ball milling time on microstructures and mechanical properties of mechanically-alloyed iron-based materials LIU Dong-hua(刘东华), LIU Yong(刘 咏), ZHAO Da-peng(赵大鹏), WANG Yan(王 岩... of 10 mm and 6 mm, respectively. The ball-to-powder mass ratio (BPR) was 8?1. The rotation speed was 225 r/min, and the milling time of 100, 144 and 200 h was adopted, respectively. Powder handling......
under a purified argon atmosphere for 5 h. The mass ratio of ball to powder was 20:1 and the milling rotation speed was 300 r/min. The as-milled powder was heat-treated at various temperatures for 30.... The phase changes due to ball milling and subsequent heat treatment were characterized by X-ray diffraction(XRD) using Cu Kα radiation. Particle sizes of alloy powder were measured with an atom......
Effect of ball milling time on microstructure and properties of Laves phase NbCr2 alloys synthesized by hot pressing XIAO Xuan(肖 璇)1, 2, LU Shi-qiang(鲁世强)1, HU Ping(胡 平)1, HUANG Ming-gang(黄铭刚)1... alloys, prepared from elemental niobium and chromium powders under various ball milling time by hot pressing at 1 250 ℃ for 0.5 h, were investigated. The results indicate that if the ball milling time......
