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34CrMoA转子钢高温循环蠕变断口分形维数与蠕变性能的关系

仪建章 , 阳志安 , 朱世杰 , 王中光

金属学报

用垂直剖面法测定了34CrMoA转子钢在550℃循环蠕变断口的分形维数,分析、比较了分形维数与蠕变性能的关系,结果表明,分形维数与断裂应变呈线性关系。

关键词: 循环蠕变 , fractal dimension , creep property , 34CrMoA rotor steel

Ti/SnO2+Sb2O3+MnO2/PbO2阳极的性能研究

梁镇海 , 孙彦平

无机材料学报

制备了一种非贵金属阳极-Ti/SnO+Sb+MnO/PbO,并用XRD、SEM进行了表征,计算出了电极的分形维数,测定了该电极在硫酸中的使用寿命和动力学参数,把该电极用于处理含酚...

关键词: Ti/SnO2+Sb2O3+MnO2/PbO2阳极 , treatment of waste water , fractal dimension , eletrocatalysis

PBTCA稳定Al2O3悬浮液及沉积物分形特性的研究

刘阳桥 , 高濂 , 郭景坤

无机材料学报

测定了2-膦酸丁烷-1;2,4-三羧酸(PBTCA)的电离特性,并通过Zeta电位、粒径分布、沉降、比表面积等手段研究其在Al表面的吸附及其对电动特性和稳定性的影响.结果表明;PBTCA在Al表面发生...

关键词: 氧化铝 , 2-phosphonobutane-1,2,4-tricarboxylic acid , adsorption , fractal dimension , null , null

多相材料断裂的分形特征

魏军 , 汪复兴 , 陈南平

材料研究学报

测量了多相材料复合涂层的断裂挠度和断口表面的分形维数,分析了复合涂层的断裂特征结果表明:随着硬质相增加,复合涂层的断裂挠度和断口表面的分形维数降低

关键词: 复合涂层 , fracture deflection , fractal dimension

Cl~-对铁在硫酸介质中致钝过程的影响

宋光铃 , 曹楚南 , 高卫红 , 李瑛 , 陈慎豪

中国腐蚀与防护学报

通过对FE在含Cl-与不含Cl-的H2SO4介质中的稳态钝化和暂态致钝过程的分析,发现钝化膜的生成是以分形方式进行的,钝化电位的提高在加快成膜速度的同时,也使膜的分形维数上升.Cl-的加入使分形维数进一步提高,并通过改变膜的组成结构使膜的溶解速度增大.

关键词: 致钝过程 , passive film , fractal dimension

COMPUTER SIMULATION OF PHASE SEPARATION IN CaO MgO Fe 2O 3 Al 2O 3 SiO 2 GLASS

Y.H. Xia 1) , T.P. Lou 1) , Z.T. Sui 1) and B. Li 2) 1) School of Material & Metallurgy , Northeastern University , Shenyang 110006 , China 2) Jiamusi University , Jiamusi 154007 , China

金属学报(英文版)

The fractal and spinodal decomposition models combined Monte Carlo method were used in computer simulation of phase separation from CaO MgO Fe 2O 3 Al 2O 3 SiO 2 glass. The fractal dimension was applied to quantitative analysis. The mechanism of phase separation was investigated. The resul...

关键词: glass , null , null , null , null , null , null

FRACTAL INVESTIGATION OF THE MICROSTRUCTURE IN Alnico8 THERMOMAGNETICALLY TREATED

W.D. Fei , W.G. Chu and D.Z. Yang School of Material Science and Engineering , Harbin Institute of Technology , Harbin 150001 , China

金属学报(英文版)

Fe-Co rich particles in the Alnicos samples thermomagnetically treated fo for various times at 800℃ have been found to be of self-similarity and of fractal characteristics both in two- and three-dimension space. Fe-Co rich particles for 1. 5, 3 and 5min treatments have shown a different fractal nat...

关键词: Alnico8 , null , null , null

SMALL ANGLE NEUTRON SCATTERING INVESTIGATION OF Ni_(50)Mo_(50) ALLOY AND ITS FRACTAL PROPERTIES

LI MeiyaShantou University , Shantou , Guangdong , ChinaCOWLAMNUniversity of Sheffield , Sheffield S3 7RH , UKCOCCOGUniversita di Sassari , via Vienna 2 , 07100 Sassari , Italy Manuscript received 10 May , 1994

金属学报(英文版)

Small angle neutron scattering(SANS) technique has been used to investigate the Ni_(50)Mo_(50) system prepared by mechanical alloying(MA). Significant changes of the scattering intensity have been observed among the samples with different milling time.Interesting fractal-like behavior of the sample ...

关键词: mechanical alloying , null , null

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