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Journal of The Less Common Metals最新文献

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Study of SiC-whisker-reinforced ZrO2 ceramics using the sol-gel method 溶胶-凝胶法制备sic晶须增强ZrO2陶瓷
Journal of The Less Common Metals Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90005-O
Tu GanFeng, Sui ZhiTong, Wang ChangZhen
{"title":"Study of SiC-whisker-reinforced ZrO2 ceramics using the sol-gel method","authors":"Tu GanFeng,&nbsp;Sui ZhiTong,&nbsp;Wang ChangZhen","doi":"10.1016/0022-5088(91)90005-O","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90005-O","url":null,"abstract":"<div><p>Tetragonal ZrO<sub>2</sub>-SiC whisker composite powders have been synthesized by the sol-gel method. Analysis reveals that SiC whiskers are homogeneously dispersed in the composite powder, the matrix being ultrafine metastable tetragonal ZrO<sub>2</sub>. The sintering properties of the composite have been investigated. SiC whiskers favour an increase in content of metastable tetragonal ZrO<sub>2</sub>. When the SiC whisker content is high, the critical stress intensity factor (<em>K</em><sub><em>IC</em></sub>) decreases.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 205-208"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90005-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754615","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: 4
Crystal structure of CsUCl4 · 3H2O CsUCl4·3H2O的晶体结构
Journal of The Less Common Metals Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90021-U
Karl Krämer, Gerd Meyer, Miroslaw Karbowiak, Janusz Drozdzynski
{"title":"Crystal structure of CsUCl4 · 3H2O","authors":"Karl Krämer,&nbsp;Gerd Meyer,&nbsp;Miroslaw Karbowiak,&nbsp;Janusz Drozdzynski","doi":"10.1016/0022-5088(91)90021-U","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90021-U","url":null,"abstract":"<div><p>Dark red-brown CsUCl<sub>4</sub> · 3H<sub>2</sub>O crystallizes in the monoclinic crystal system (<em>a</em> = 711.6(1) pm, <em>b</em> = 867.2(2) pm, <em>c</em> = 807.1(2) pm; β = 99.28(3)°, space group <span><math><mtext>P2</mtext><msub><mi></mi><mn>1</mn></msub><mtext>m</mtext></math></span>, <em>Z</em> = 2). Uranium has a coordination number of nine (tricapped trigonal prism) consisting of six chlorine atoms and three oxygen atoms (representing water) with mean distances of 295.7 and 255.2 pm respectively. Caesium is surrounded by eight chlorine atoms in the shape of a distorted cube which is capped by two water ligands, the mean Cs-Cl distance being 360.2 pm.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 347-352"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90021-U","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754657","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: 10
Subject index of volume 175 第175卷的主题索引
Journal of The Less Common Metals Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90027-2
{"title":"Subject index of volume 175","authors":"","doi":"10.1016/0022-5088(91)90027-2","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90027-2","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 377-382"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90027-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754664","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
Crystal and magnetic properties of U(Mn1−xFex)2Si2 U(Mn1−xFex)2Si2的晶体和磁性能
Journal of The Less Common Metals Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90010-2
J.J Bara, H.U Hrynkiewicz, A Szytuta
{"title":"Crystal and magnetic properties of U(Mn1−xFex)2Si2","authors":"J.J Bara,&nbsp;H.U Hrynkiewicz,&nbsp;A Szytuta","doi":"10.1016/0022-5088(91)90010-2","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90010-2","url":null,"abstract":"<div><p>The solid solution system U(Mn<sub>1−x</sub>Fe<sub>x</sub>)<sub>2</sub>Si<sub>2</sub> (0 ⩽ <em>x</em> ⩽ 1) was synthesized by direct melting of the UMn<sub>2</sub>Si<sub>2</sub> and UFe<sub>2</sub>Si<sub>2</sub> components and investigated by X-ray diffraction, magnetometric and Mössbauer effect methods. The series investigated behaves similarly in many respects to the isostructural ones formed with other elements. The values of the lattice constants obey Vegard's law. The isomer shift and quadrupole splitting vary gradually across the range of iron concentration. The quadrupole splitting reflects a deviation from the ideal tetrahedral coordination of iron site neighbours. The manganese-rich samples (<em>x</em> ⩽ 0.3) were found to be ferromagnets at 78 K while the others behave as Pauli paramagnets above 78 K. The Curie temperature and hyperfine magnetic field decrease strongly with increasing iron concentration. The composition dependence of the Curie temperature is well described by the Heisenberg model in which the magnetic interactions between nearest neighbours and the uniaxial magnetic anisotropy were taken into account.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 259-265"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90010-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754668","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: 3
Crystal structure and conductivity of a new compound, Ag7TaS6 新化合物Ag7TaS6的晶体结构和电导率
Journal of The Less Common Metals Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90006-P
H. Wada, M. Onoda
{"title":"Crystal structure and conductivity of a new compound, Ag7TaS6","authors":"H. Wada, M. Onoda","doi":"10.1016/0022-5088(91)90006-P","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90006-P","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"31 1","pages":"209-217"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86367900","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: 21
New composite materials for hydrogen storage using magnesium as a binder 以镁为粘结剂的新型储氢复合材料
Journal of The Less Common Metals Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90009-S
H. Fujii, S. Orimo, K. Yamamoto, K. Yoshimoto, T. Ogasawara
{"title":"New composite materials for hydrogen storage using magnesium as a binder","authors":"H. Fujii, S. Orimo, K. Yamamoto, K. Yoshimoto, T. Ogasawara","doi":"10.1016/0022-5088(91)90009-S","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90009-S","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"4 1","pages":"243-257"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88898623","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: 23
Single-crystal studies of an Mn5Si3-type phase in the Cr-Fe-Nb-Si quaternary system Cr-Fe-Nb-Si四元体系中mn5si3型相的单晶研究
Journal of The Less Common Metals Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90001-K
M. Vilasi, P. Steinmetz, J. Steinmetz
{"title":"Single-crystal studies of an Mn5Si3-type phase in the Cr-Fe-Nb-Si quaternary system","authors":"M. Vilasi, P. Steinmetz, J. Steinmetz","doi":"10.1016/0022-5088(91)90001-K","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90001-K","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89482379","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: 2
Crystal structure and conductivity of a new compound, Ag7TaS6 新化合物Ag7TaS6的晶体结构和电导率
Journal of The Less Common Metals Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90006-P
Hiroaki Wada, Mitsuko Onoda
{"title":"Crystal structure and conductivity of a new compound, Ag7TaS6","authors":"Hiroaki Wada,&nbsp;Mitsuko Onoda","doi":"10.1016/0022-5088(91)90006-P","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90006-P","url":null,"abstract":"<div><p>Silver-tantalum with the composition Ag<sub>7</sub>TaS<sub>6</sub> has been prepared by a sealed silica tube method at 500 °C for 4 days. The compound Ag<sub>7</sub>TaS<sub>6</sub> crystallizes in the cubic system with the unit cell dimension <span><math><mtext>a = 10.5139 ± 0.0003 </mtext><mtext>A</mtext><mtext>̊</mtext></math></span>. The observed density is <em>D</em><sub><em>obs</em></sub> = 6.55 ± 0.03 g cm<sup>−3</sup>. The unit cell contains four formula units of Ag<sub>7</sub>TaS<sub>6</sub>. The space group <span><math><mtext>F</mtext><mtext>4</mtext><mtext>̄</mtext><mtext>3m</mtext></math></span> is proposed by analogy with the structure of the similar group of silver-containing ternary chalcogenides. Refinement was performed by using X-ray powder diffraction data, the positional parameters for Ag<sub>7</sub>TaS<sub>6</sub> being determined. In the structure of Ag<sub>7</sub>TaS<sub>6</sub> the sulphur atoms form centred, interpenetrating, distorted icosahedra and the 11.23, 9.77 and 7.00 silver atoms are statistically distributed over 96<em>i</em> and two 48<em>h</em> sites respectively. This compound is a mixed conductor. The ionic conductivity <em>σ</em><sub><em>ag</em>+</sub> reaches <span><math><mtext>1.8 × 10</mtext><msup><mi></mi><mn>−1</mn></msup><mtext>Ω</mtext><msup><mi></mi><mn>−1</mn></msup><mtext> cm</mtext><msup><mi></mi><mn>−1</mn></msup></math></span> at 200 °C.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 209-217"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90006-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754614","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: 21
Grain growth in liquid-phase-sintered W-Mo-Ni-Fe alloys 液相烧结W-Mo-Ni-Fe合金的晶粒生长
Journal of The Less Common Metals Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90022-V
P.B. Kemp , R.M. German
{"title":"Grain growth in liquid-phase-sintered W-Mo-Ni-Fe alloys","authors":"P.B. Kemp ,&nbsp;R.M. German","doi":"10.1016/0022-5088(91)90022-V","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90022-V","url":null,"abstract":"<div><p>Previous observations have shown smaller grain sizes and higher strengths in W-Ni-Fe heavy alloys containing molybdenum. This study focuses on the microstructure and grain growth kinetics for the W-Mo-Ni-Fe system processed at 1500 °C. The initial rate of grain growth follows an approximate square root time dependence in contrast to the cube root dependence typical for W-Ni-Fe alloys. Microprobe measurements show that chemical gradients are present in the solid grains, with high molybdenum content cores. The retarded grain growth from molybdenum additions is the result of a decreased tungsten solubility in the liquid during the early stages of sintering.</p></div>","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"175 2","pages":"Pages 353-368"},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-5088(91)90022-V","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71754658","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: 42
Specific Heat of UOs2 and UOsIr UOs2和UOsIr的比热
Journal of The Less Common Metals Pub Date : 1991-10-01 DOI: 10.1016/0022-5088(91)90002-L
M. Baldus, B. Andraka, G. Stewart
{"title":"Specific Heat of UOs2 and UOsIr","authors":"M. Baldus, B. Andraka, G. Stewart","doi":"10.1016/0022-5088(91)90002-L","DOIUrl":"https://doi.org/10.1016/0022-5088(91)90002-L","url":null,"abstract":"","PeriodicalId":17534,"journal":{"name":"Journal of The Less Common Metals","volume":"242 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1991-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75902756","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
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