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小孔径泡沫铝的制备及压缩性能研究 王永胜1,周芸1,毕于顺1,左孝青1,陆建生1 (1.昆明理工大学,云南,昆明,650093) 摘要:在常规熔体发泡法基础上,采用添加0.5%Mg(质量分数,下同)以降低表面张力;发泡剂400 ℃,6 h+500℃,1 h氧化预处理以协调发泡剂分散均匀性与发泡过程关系;发泡搅拌60s以破碎初始气泡等措施,成功制备出了平均孔径1.3 mm,孔隙率70.5%,结构均匀的小孔径泡沫铝.泡沫铝及Al-9Si泡沫的压缩性能分析表明,随平均孔径减小,泡沫铝的屈服强度,致密化应变和能量吸收能力均明显提高,泡沫铝压缩性能随孔径减小而提高,与泡沫铝的孔结构因素及孔结构均匀性有关. 关键词:泡沫铝; 小孔径; 制备; 压缩性能; Al foam; fine cell diameter; fabrication; compressive property; [全文......
Improving the sulfidation-flotation of fine cuprite by hydrophobic flocculation pretreatmentQian-yu Sun1,Wan-zhong Yin1,2,Dong Li1,Ya-feng Fu1,Ji-wei Xue1,Jin Yao11. College of Resources and Civil... on the recovery of fine cuprite in sulfidation-flotation. The results of the micro-flotation experiment showed that cuprite recovery is related to the particle size, and that an excessive content......
; 文献标志码:A Annealing microstructure and properties of fine-grained TC4 wire MAO Jiang-hong, CAO Ji-min, YANG Hua-bin (Xi’an Saite Metal Materials Development Co., Ltd., Northwest Institute... with the highest strength and good plasticity strengthened by the fine-grain. As the annealing temperature increases, the hardness and strength of the wire are gradually reduced. The hardness and strength......
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; 文章编号:1672-7207(2015)11-3983-08 Strengthened recovery of fine wolframite by cyclonic-static microbubble flotation column AI Guanghua1, 3, LIU Jiongtian2, CAO Yijun2, LI... recycle of tungsten, long flow and low recovery in wolframite flotation separation, an efficient fine particle separation machine, with cyclonic-static microbubble flotation column was used to strengthen......
AGGREGATE STRUCTURE OF FINE POWDER AND COMPACTION PROCESS王炳华Department of Material Engineering Wuhan University of Technology摘 要:<正> Compacting process of fine powder is greatlyaffected by the aggregate structure of particles.Accordingto the experiment in which several kinds of silicon nitrides indifferent partical shape and size were compacted......
Study on the Hydrate Activity of Fine Building Waste邢伟宏摘 要:<正>This paper discusses the way to activate building waste in order to increase the amount.... For the mixture of 80% fine building waste and 20% cement, 1.5% Na2SO4 (in weight) is most effective to increase strength.关键词:......
Low-cost oriented preparation of ultra fine xonotlite fibersNI Wen, CHEN Shuxiang, and ZHU Lin摘 要:<正> Nanometer-sized xonotlite fibers have great potential application in many fields. The traditional method of preparing ultra fine xonotlite fibers uses the ultra fine and highly active silica as the major raw materials, which is not only expensive......
Low-cost oriented preparation of ultra fine xonotlite fibersWen Ni, Shuxiang Chen, and Lin ZhuCivil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 10083, China摘 要:<正> Nanometer-sized xonotlite fibers have great potential application in many fields. The traditional method of preparing ultra fine......