共搜索到2983条信息，每页显示10条信息，共299页。用时：0小时0分0秒396毫秒
Element Analysis of Ceramic Coatings under Spherical Indentation with Metallic Interlayer: PartⅡRing CrackMinh-Quy LE,Seock-Sam KIM摘 要:<正>Spherical... thickness under spherical indentation are investigated within the framework of linear fracture mechanics. The J-integral associated to such cracks was computed. The evolution of J-integral vs the crack length......
Ytterbium Hydroxide and Erbium Hydroxide Coating of Spherical Nickel Hydroxide Positive Materials for Ni-MH Batteries at High-Temperature张文广,蒋文全,于丽敏,傅钟臻,夏雯,郭荣贵,陈飞彪,李涛摘 要:For the purpose of the important high-temperature charge-discharge performances of spherical Ni(OH)2 used as positive materials for Ni-MH batteries, Yb(OH)3 and Er(OH)3 were used......
Near-net shape processing of spherical high Nb-TiAl alloy powder by gelcastingHui-ping Shao,Xiao-ting Liu,Ye Ji,Zhi-meng GuoInstitute for Advanced Material & Technology,University of Science and Technology Beijing摘 要:Spherical Ti-45Al-8.5Nb-(W,B,Y)alloy powder prepared by an argon plasma process was near-net shape by gelcasting.In the non-aqueous system......
DMAc used as a reducer for preparation of spherical silver nanoparticles with high dispersionHE Guo-wen(贺国文)1, 2, LI Fen-fang(李芬芳)1, WEN Jie-bin(文杰斌)2, 3(1. School of Chemistry and Chemical... into a spherical morphology with a very narrow size distribution of 2-11 nm. The preparation provides a new reducing agent to form AgNP with simpler operation and shorter time.Key words:N, N......
型的计算结果如图2所示,表1所示为两者所包含的材料参数的取值. 图2 初始孔隙比对水-土特征曲线的影响及模型计算结果对比[28] Fig. 2 Effect of initial void ratios on soil-water characteristic curves and model calculation compasion[28] 表1 CALLIPOLI模型和本文模型材料参数... against with initial void ratio e0 and suction s 1.4 参数敏感性分析 本节探究材料参数φ,n和m对模型计算结果的影响,假定试样的初始孔隙比e0和参考初始孔隙比er分别为0.93和0.59,其余材料参数见表1. 材料参数φ,n和m对试样的水-土特征曲线的影响如图4所示.由图4可以看出:保持基质吸力不变,增大φ会导致试样的有效饱和度逐渐减小,该影响会随基质......
Spherical and Radiate Ni Particles Prepared by the Tartrate Precipitation and Thermal Decomposition Method李涛1,2,刘颖1,MA Guohua2,HE Dengliang31. College of Materials Science and Engineering,Sichuan... crystal structure.The images of scanning electron microscopy(SEM) showed that the morphology of metal Ni particles was obvious spherical and radiate.The diameter of nickel tartrate particles was about 60......
Melamine Modification of Spherical Activated Carbon and Its Effects on Acetylene Hydrochlorination韩伟杰,WANG Xugen,ZHU Mingyuan,ZHANG Haiyang,CHEN Kun,WANG Qinqin,LI Xiaoyan,代斌School of Chemistry and Chemical Engineering, Shihezi University/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan摘 要:Commercial spherical activated......
Wear Properties of Plasma Transferred Arc Fe-based Coatings Reinforced by Spherical WC Particles范丽1,董耀华2,3,CHEN Haiyan3,DONG Lihua3,YIN Yansheng31. College of Mechanical and Electronic Engineering...="ChDivSummary">Fe-based coatings reinforced by spherical WC particles were produced on the 304 stainless steel by plasma transferred arc(PTA) to enhance the surface wear properties. Three different Fe......
Fig.13 Relationship between mean area of voids and void content in CFRP 图14 层中孔隙面积的频率分布直方图和概率密度曲线 Fig.14 Statistics histogram and probability density curves of mean areas for intra-laminate voids 图15 孔隙长宽比与孔隙率的关系 Fig.15 Relationship between aspect radio of voids and void content in CFRP 图15所示为孔隙长宽比随孔隙率的变化趋势,采样点由B样条曲线连接,阴影区域标识长宽比的取值范围.对比2种材料中层间孔隙长宽比的最大值,单向带和织物层间孔隙长宽比大于4的分界点分别为pv>1.0%和pv>......
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 density of the metal powders increase noticeably. The combination property of metal powders is improved greatly. Key words: metal powders; particles composite system; spherical particles; powder......
