材料期刊网，材料期刊，材料类期刊，材料期刊投稿

S. Kubono , 何建军 , H. Yamaguchi , D. M. Kahl , S. Hayakawa , T. Teranishi , S. Cheribini , M. Gulino , Y. K. Kwon , T. Hashimoto , Y. Wakabayashi , N. Iwasa , S. Kato , T. Komatsubara , D. N. Binh , L. H. Khiem , N. N. Duy , T. Kawabata , C. Spitaleri , G. G. Rapisarda , M. La Cognata , L. Lamia , R. G. Pizzone , S. Romano , A. Coc , N. de Sereville , F. Hammache , G. Kiss , S. Bishop

原子核物理评论 doi:10.11804/NuclPhysRev.33.02.212

关键词:

D40M埋弧焊丝改进研究

王明林 , 谢迪明 , 王君民 , 张成杰

材料开发与应用 doi:10.3969/j.issn.1003-1545.2006.02.004

适当增加D40M埋弧焊丝中C、Cu的含量,解决了该埋弧焊丝与705-ch焊剂配用时出现的熔敷金属低温韧性偏低和焊丝镀铜的问题,保证了D40M埋弧焊丝生产供货的合格率.

关键词: 埋弧焊丝 , 熔敷金属 , 韧性

透明薄膜是一种光谱选择性材料,探明该膜系的光谱选择度,对于开发新型能源材料具有重要意义。作者研究了在Al 和Ag 基膜上分别沉积SiO,SnO_2,CeO_2,ZnS 和CdS 介质膜,组成D/M 非对称膜系,测定了它们在320—1000nm 波长范围内的光谱透过率。证明各种介质膜对于金属基膜光谱选择度的影响基本相似,但对于透过率峰值的影响却明显不同;一般说来,介质膜对于Ag 膜的光谱透过率会产生较大的增益,而且介质膜愈厚,增透性愈好。实验结果表明,采用D/M 非对称膜系,有可能研制出光谱选择度满意的透明热反射镜材料。

关键词: 光谱透光性 , transparent heat-mirror films , unsym-metrical optical systems

溅射工艺对D/M/D结构中SiNx介质膜光学常数的影响

孙瑶 , 汪洪

航空材料学报 doi:10.11868/j.issn.1005-5053.2015.4.005

采用射频反应溅射制备SiNx薄膜,作为以Ag膜为功能层的D/M/D结构透明导电膜中的电介质膜,并研究射频功率、气压以及N2流量对SiNx薄膜光学常数的影响.结果表明,SiNx薄膜具有非晶态结构,光学常数在300～ 2500nm波长范围内符合正常色散关系.椭偏测试及Cauchy模型拟合结果表明,折射率随功率、气压以及N2流量升高而降低,SiNx光学常数最佳的工艺条件为功率300W,气压0.16Pa,N2与Ar流量比例1∶1,此时薄膜折射率为2.02,消光系数为0,最接近具有化学计量比的Si3N4薄膜的光学常数.按此工艺制备的SiNx膜在优化厚度为44nm的条件下作为20nm厚度Ag膜的电介质膜,当只有表面SiNx膜时,Ag膜透光率由29.17％提高至55.01％,当Ag膜上下均制备SiNx膜时,透光率进一步提高至66.12％.

关键词: SiNx膜 , Ag膜 , 折射率 , 椭偏仪 , 透光率

A Novel near Net-Shape Technique for P/M Parts with Large H/D Ratio

Yong LIU , Baiyun HUANG , Kechao ZHOU , Hongwu OUYANG , Yuehui HE

材料科学技术（英文）

In order to overcome the shortcomings of conventional hot pressing, a novel near net-shape technique, called radial hot pressing, for P/M parts with large height-to-diameter (H/D) ratio was introduced. Effects of processing parameters on the microstructures and density of P/M TiAl base alloy valves were studied. Results show that the radial hot pressing is an effective technique for manufacturing valves with a H/D ratio of about 10:1, and the perfect joint interface between the Mo sheet and the parts is helpful for subsequent HIPing.

关键词: Near net-shape technique , null , null

D2、M2、S5模具扁钢脱碳特性实验研究

赵德文 , 郭长武 , 刘相华 , 王国栋 , 徐辉 , 戴建明

钢铁

开展了在空气和氮气两种气氛下，采用Gleeble-1500热模拟机与普通电炉两种加热方式、不同加热温度、加热时间对D2、M2、S5钢脱碳层深度影响的试验研究。依据试验结果，结合现场实际制定了较为合理的生产工艺并在现场成功应用，使上述模具扁钢脱碳层指标达到了美国ASTM-A681技术标准。

关键词: 脱碳层深度 , 模具扁钢 , ASTM-A681

1200m3/d电镀废水膜法回收工程

楼永通 , 宋伟华 , 罗菊芬 , 吕海峰 , 王寿根 , 徐荣安 , 贺持缓 , 李国良 , 陶维正

膜科学与技术 doi:10.3969/j.issn.1007-8924.2004.05.010

在中试基础上建立1200 m3/d电镀镍漂洗水膜法回收工程,采用三级膜分离技术浓缩电镀废水并回收水和镍.一级处理量50 m3/h,浓缩10倍;二级处理量5 m3/h,浓缩5倍;三级处理量1m3/h,浓缩2倍以上,共浓缩100倍以上.一级膜分离系统对镍的截留率为98%;二级、三级膜分离系统对镍截留率均在99%以上.从2001年1月至2002年12月,共运行了2年.三级膜分离系统的通量均有不同程度的下降,一级下降约20%,二级下降约25%,三级下降约40%.整个系统运行良好,基本上实现了电镀废水的资源化.

关键词: 电镀废水 , 膜分离技术 , 截留率 , 通量

Proposed relationship between the exponents gamma and eta at liquid-vapour critical point via the dimensionality d

Physics and Chemistry of Liquids

In earlier work, Ma [S.K. MA, Phys. Rev. Lett., 29, 1311 (1972)] has studied the critical exponents and for charged and neutral Bose gases. Here we use the result of Ma, valid for general dimensionality d but only to O(m-1), where m is the number of components of the Bose field, to write a relation between (d) and (d) to O(m-1). This then motivates, but now for the Ising model, a relationship between the critical exponents and , via the dimensionality d. We finally demonstrate a connection between the two renormalisation group eigenvalues yt and yh, via the critical exponent with a dimensional dependence.

关键词: critical exponents;Ising model;dimensionality

DESIGN OF A/AD_m-BC_n DIRECTIONAL EUTECTIC COMPOSITES

S.P.Li.S.X. Zhao , X.H Yu , M .X. Pan , D.Q.Zhao and X.C.Chen (Institute of Physics Chinese Academy of Sciences , Beijing 100080 , China)O.M Barabash(Institute of Metal Physics , Kiev 252142 , Ukraine)(Manuscript received 9 February 1996)

金属学报(英文版)

Design process of A/ADm-BCn type directional eutectic composites was instanced by investigating Al-Mg-Si-Li and Ni-Mo-C-Al systems in this study by thermoanalysis and directional solidification techniques. It was demonstrated that A(D)-BCn eutectic alloys could be obtained more conveniently by using Smith′s thermoanalysis method to trace change of the eutectic Points of A-BCn induced by addition of components D. A/ADm-BCn directional eutectic composites could be produced from directionally solidified A/ADm-BCn alloys after proper heat treatments if components D have higher solid solubility in components A at high temperature and stable of metastable phases ADm could be formed at room temperature.

关键词: :solidification temperature scale , null , null