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Synthesis of nano-CaCO3 composite particles and their applicationWei Wu~(1)Xueqin Zhang~(1)Jianfeng Chen~(1,2)Shuling Shen~(1) (1)Key Lab of the Ministry of Education of China for Nanomaterials...,Beijing 100029,China摘 要:<正>Nano-calcium carbonate composite particles were synthesized by the soapless emulsion polymerization technique of dou- ble......
J. Cent. South Univ. (2016) 23: 740-749 DOI: 10.1007/s11771-016-3119-8 Numerical simulation of flocculation and settling behavior of whole-tailings particles in deep-cone thickener RUAN Zhu-en(阮竹恩)1... Berlin Heidelberg 2016 Abstract: Rapid dewatering and thickening of whole-tailings with ultrafine particles is one of the most important processes for the whole-tailings paste preparation. Deep-cone......
shaped metal powders were impacted and sphericized by using high speed airflow impact method particles composite system(PCS). The optimum technological parameters for the metal powders processed were determined according to the treatment effect under different conditions. The results show that the irregularly shaped metal powders are impacted into dense spherical particles, the bulk density and tap......
PARTICLES ANALYSIS OF Al2O3 PARTICLE REINFORCED ZL202 MATRIX COMPOSITES PREPARED BY IN-SITU REACTION S.C.Sun1,X.H.Yan1,Z.Y.Jiang1 (1.School of Materials Science and Engineering, Jiangsu University, Jiangsu 212013, China) Abstract:ZL202 matrix composite reinforced by Al2 Os particles was prepared by combining in-situ reaction and casting techniques. Particles'' size in the composites was from 1......
Dispersion of Micro Diamond Particles in Electroless Nickel Solution朱昌洪,朱永伟College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics摘 要:The dispersion behavior of micro-diamond particles ranging from 0 to 0.5 micron was compared between in DI water and in electroless nickel solution. The effects......
was put forward. The results show that the strength of backfill is affected by the content of the slurry particles. The larger the coarse particle content is, the larger the uniaxial compressive strength is, and the uneven distribution of the strength is caused by the uneven distribution of the particles. In flow direction, the distribution of the strength of backfill is basically consistent......
Modification and investigation of silica particles as a foam stabilizerQian Zhu,Hua-lei Zhou,Ying-xiao Song,Zhi-dong Chang,Wen-jun LiSchool of Chemistry and Biological Engineering,University of Science and Technology Beijing摘 要:As a solid foam stabilizer,spherical silica particles with diameters ranging from 150 to 190 nm were prepared via an improved......
particles was fabricated by pressure infiltration method, and its microstructure and the effect of annealing treatment on thermo-conductivity were discussed. Si3N4 particles distribute uniformly without any particle clustering and no apparent particle porosity or significant casting defects are observed in the composites. The combination of particles and matrix is well. The raw Si3N4 particles......
弹簧钢55SiCrA轴向疲劳行为的试验研究肖金福1,刘雅政1,孙小军1,孙景宏1,谢建新1(1.北京市北京科技大学材料科学与工程学院)摘 要:随着对汽车轻量化和安全性要求的不断提高,改善疲劳性能成为弹簧钢研究与开发的一个重要主题.在Amsler HFP 5000高频疲劳试验机上研究了弹簧钢55SiCrA轴向拉-压加载的疲劳性能,测定了其条件疲劳极限及S-N曲线,利用扫描电镜(SEM)和E-DAX对疲劳断口及夹杂物进行观察,对断口进行了宏观和微观分析,研究了疲劳破坏的机制.试验结果表明:试验钢的条件疲劳极限为82......
