Journal of The Less Common Metals最新文献_第8页

The isothermal section (500 °C) of the phase diagram of the ternary system Cu-Sn-Y Cu-Sn-Y三元体系相图的等温截面(500℃)

Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90353-6

Zhuang Yinghong, Qin Can, Li Junqin

{"title":"The isothermal section (500 °C) of the phase diagram of the ternary system Cu-Sn-Y","authors":"Zhuang Yinghong, Qin Can, Li Junqin","doi":"10.1016/0022-5088(91)90353-6","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90353-6","url":null,"abstract":"<div>The isothermal section (500 °C) of the phase diagram of the ternary system Cu-Sn-Y (40 at.% Y or less) was investigated by X-ray diffraction, differential thermal microanalysis, optical microanalysis and electron probe microanalysis techniques. The isothermal section consists of 12 single-phase regions, 25 two-phase regions and 14 three-phase regions. Three new ternary compounds were found in this isothermal section: the θ phase (Y8Cu7Sn5), the β phase (Y3Cu4Sn3) and the γ phase (Y19Cu66Sn15). They are all non-variable compounds. The θ phase is an orthorhombic system with <math><mtext>a = 9.702 </mtext><mtext>A</mtext><mtext>̊</mtext></math>, <math><mtext>b = 7.285 </mtext><mtext>A</mtext><mtext>̊</mtext></math> and <math><mtext>c = 6.545 </mtext><mtext>A</mtext><mtext>̊</mtext></math>.The maximum solid solubility of tin in α-Cu at 500 °C is about 9.0 at.% and that of yttrium in α-Cu at 500 °C (with 4.3 at.% Sn) is about 1.5 at.%.</div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 1","pages":"Pages 97-101"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90353-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71731605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ion beam deposition of silver on YBCO powder and the superconductivity of Ag-YBCO composites 银在YBCO粉末上的离子束沉积及Ag-YBCO复合材料的超导性

Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90363-9

H.R. Khan , H. Frey

引用次数: 2

Crystal structure of the compound CeRh1 − xGe2 + x (x = 0.325) 化合物CeRh1−xGe2 + x (x = 0.325)的晶体结构

Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90343-3

B.I. Shapiev, O.L. Sologub, Ju.D. Seropegin, O.I. Bodak, P.S. Salamakha

引用次数: 7

The structure of LiCu2O2 with mixed-valence copper from twin-crystal data 从双晶数据研究含混价铜的LiCu2O2的结构

Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90356-9

Rolf Berger , Auke Meetsma, Sander van Smaalen, Margareta Sundberg

引用次数: 29

Constitutional studies of molybdenum-palladium alloys using ultra-rapidly solidified samples 用超快速凝固试样研究钼钯合金的组成

Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90350-D

R. Gürler, J. N. Pratt

引用次数: 10

Mössbauer and magnetic properties study of Nd2Fe14C-type compounds Mössbauer及nd2fe14c型化合物的磁性能研究

Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90352-5

F. Xing, W.W. Ho, C.L. Yang, F.S. Li

引用次数: 6

Über die Möglichkeit einer Mischungslücke in dem Na-Ga binären System 亚联二进制系统中可能出现的缺口

Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90344-4

P. Feschotte

引用次数: 3

The effect of cold deformation on the structure, texture and properties of yttrium high temperature superconducting powders and strips 冷变形对钇高温超导粉末和带的组织、织构和性能的影响

Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90347-7

V. Shamraǐ, A. Pimenov, Y. Efimov, A. A. Babaréko, F. R. Karelin, V. F. Choporov, T. Frolova, E. Myasnikova, A. Postnikov

引用次数: 0

Magnetic properties and structural characterization of the solid solution Er2 − xYxBaNiO5 (0 ≤ x ≤ 2) 固溶体Er2−xYxBaNiO5(0≤x≤2)的磁性及结构表征

Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90357-A

R. Saez-Puche, J.M. Martin-Llorente, J.M. Coronado

{"title":"Magnetic properties and structural characterization of the solid solution Er2 − xYxBaNiO5 (0 ≤ x ≤ 2)","authors":"R. Saez-Puche, J.M. Martin-Llorente, J.M. Coronado","doi":"10.1016/0022-5088(91)90357-A","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90357-A","url":null,"abstract":"<div>Different samples of nominal composition Er2 − xYxBaNiO5 (0 ≤ x ≤ 2) were synthesized and characterized by X-ray powder diffraction. These oxides, which are isostructural, crystallize with orthorhombic symmetry, space group Immm. The linear increase observed in the lattice parameters with increasing values of x is due to the larger ionic radius of the Y3+ ion compared with the Er3+ ion.The magnetic susceptibility in all cases obeys Curie-Weiss behavior between 300 K and 40 K. The magnetic moments obtained agree fairly well with those expected for the only contribution of Er3+ which confirms the strong antiferromagnetic interactions Ni-O(2)-Ni along the a-axis which we reported earlier for the one-dimensional Y2BaNiO5. The three-dimensional antiferromagnetic interactions operative in the undoped Er2BaNiO5 are slightly diminished in the substituted Er2 − xYxBaNiO5, as can be deduced from evolution of Tχmax for these samples.</div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 1","pages":"Pages 131-136"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90357-A","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71731599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Mechanical alloying of the Pd-Si system in controlled conditions of energy transfer 能量传递受控条件下Pd-Si体系的机械合金化

Journal of The Less Common Metals Pub Date : 1991-09-20 DOI: 10.1016/0022-5088(91)90351-4

F. Padella, E. Paradiso, N. Burgio, M. Magini, S. Martelli, W. Guo, A. Iasonna

{"title":"Mechanical alloying of the Pd-Si system in controlled conditions of energy transfer","authors":"F. Padella, E. Paradiso, N. Burgio, M. Magini, S. Martelli, W. Guo, A. Iasonna","doi":"10.1016/0022-5088(91)90351-4","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90351-4","url":null,"abstract":"<div>The conditions of milling are of crucial importance in determining the kind of solid state reaction that can take place, among various possible paths, in a given system submitted to the mechanical alloying (MA) process. A model correlating the energy transfer during milling with the experimental parameters (rotation speed, mass and diameter of the balls) has been verified with the Pd-Si system. The composition Pd80Si20 has been milled, starting from pure elemental powders, in different milling conditions and the MA process followed by X-ray and differential scanning calorimetry measurements. It has been found that for high levels of energy transfer the system evolves towards the formation of the intermetallic Pd3Si. At lower levels of energy transfer, formation of a stable intermetallic phase is hindered and the reaction product is a fully amorphous phase. The amorphous structure of the MA sample has been compared with an amorphous melt-spun ribbon of the same composition.</div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 1","pages":"Pages 79-90"},"PeriodicalIF":0.0,"publicationDate":"1991-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90351-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71731615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 38