共搜索到29569条信息,每页显示10条信息,共2957页。用时:0小时0分0秒406毫秒
......
......
......
......
High Purity Mullite-Corundum Thermal Insulating FirebricksWen Ni; Fengmei Liu(Resource Engineering School, University’ of Sctence and Technology Beijing Beijing. 100083, China)摘 要:Therlllalinsulating11rebricksofAl:O;-SiO,systemwithgoodthen.nalinsulatingabilityusLlallyhaveaservicetemperaturebelow1700oC[l--3].Olherfirebricks......
Trans. Nonferrous Met. Soc. China 24(2014) 1301-1306 Structure uniformity and limits of grain refinement of high purity aluminum during multi-directional forging process at room temperature Qing-feng... Received 24 June 2013; accepted 3 October 2013 Abstract: The effect of forging passes on the refinement of high purity aluminum during multi-forging was investigated. The attention was focused......
Na3AlF6-LiF体系下Al的水平电解精炼贾明1,田忠良1,赖延清1,刘芳洋1,李劼1,刘业翔1(1.湖南省长沙市中南大学冶金科学与工程学院)摘 要:在纯氟化物电解质体系下,以原Al为阳极,利用杂质与Al析出电位的差别,采用水平电解槽进行了Al的电解精炼提纯研究.结果表明:水平电解槽导致的电流密度分布不均没有对精炼过程造成不利影响,电解过程槽电压平稳;预电解对电解质净化效果明显,预电解后电解质中Cu,Si和P的含量分别降低到3.2×10-6,14×10-6和1.5×10-6.与三层液精炼Al相比,水平精炼阴......
High temperature performance of arc-sprayed aluminum bronze coatings for steel ZHANG Zhong-li(张忠礼)1, LI De-yuan(李德元)1, WANG Shui-yong(王水勇)2 1. School of Materials Science and Engineering... April 2006 Abstract: The high-temperature oxidation behavior of arc-sprayed aluminum bronze coatings on steel substrate was studied during isothermal exposures in air at 900 ℃. The surface......
146.2; O 77 文献标识码: A Influence of surface indices of high purity aluminum crystals on initiation process of pit etching LI Dong1, MAO Wei-min1, 2 (1... were cut from ingot of high purity aluminum. The densities evolvement of pitting holes on the surfaces of the samples was quantitatively and statistically analyzed during the etching process, of which......
the foams, two different metals and one kind of powder were employed: 99.9% high purity binary eutectic Al-Si alloy (Al-12.6Si from Fushun aluminum manufacture, China), high purity metal Ca (from Sichuan... closed-cell aluminum foams of high relative density must be either small in cell size or thick in cell wall. In this experiment, the relative density of Al-Si closed-cell aluminum foams are mainly......