检索结果-南通市图书馆

Phase equilibria of Mg-rich corner in Mg Zn Al ternary system at 300 °C

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2012年第2期22卷 241-245页

作者：任玉平秦高梧裴文利李松郭运赵宏达东北大学材料各向异性与织构教育部重点实验室沈阳110819

The phase equilibria and compositions in Mg-rich comer at 300℃ were determined in the Mg-Zn-A1 ternary system through the equilibrated alloy method by using X-ray diffraction （XRD） and scanning electron microscopy （SEM） assisted with energy dispersive spectroscopy of X-ray （EDS）. The results show that there exist three three-phase regions consisted of a-Mg＋Mg17A112（7）＋A15Mg11Zn4（φ）, a-Mg＋Mga2（Al, Zn）49（r）＋A15MgllZn4（φ） and a-Mg＋MgZn＋Mg32（A1, Zn）49（r）, respectively. The intermetallic compounds in equilibrium with a-Mg phase all have large composition ranges, not appear to be linear. At the same time, both zinc and aluminum are soluble in the a-Mg solid solution, with which the compounds are in equilibrium.

关键词： Mg-Zn-A1 system isothermal section solubility intermetallic compound

PARTIAL PHASE DIAGRAM OF Ag-Cu-Tb SYSTEM

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1994年第1期7卷 54-56页

作者： HE Chunxiao, ZHANG Kanghou, CHEN LiliInstitute of Precious Metals, Kunming, China

The partial phase diagram of Ag-Cu-Tb system on the Ag-Cu-rich region at room temperature is investigated by X-ray diffraction and optical microscopy analyses. The section consists of six singlephase regions, nine bin... 详细信息

关键词： Ag-Cu-Tb system phase diagram isothermal section

Phase equilibria in Co−Al−Re ternary system at 1100 and 1300℃

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2021年第6期31卷 1740-1747页

作者： Ling-ling LI Jin-bin ZHANG Yue-chao CHEN Shui-yuan YANG Cui-ping WANG Xing-jun LIU Fujian Provincial Key Laboratory of Materials Genome College of MaterialsXiamen UniversityXiamen 361005China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China School of Materials Science and Engineering Harbin Institute of TechnologyShenzhen 518055China

isothermal sections of the Co−Al−Re ternary system at 1100 and 1300℃ were determined experimentally by electron probe microanalysis and X-ray *** results show that there are seven three-phase regions in the 1100℃ isothermal section and five three-phase regions in the 1300℃ isothermal *** solid solubilities ofαCo,εRe and CoAl increase a little with temperature increasing from 1100 to 1300℃.The solubility of Co in compounds AlRe2,Al11Re4 and Al4Re is negligible,<1.5 at.%.And no ternary compounds are found.

关键词： Co−Al−Re phase equilibria isothermal section

Intermetallics and phase relations of Mg-Zn-Ce alloys at 400 ℃

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2012年第3期22卷 539-545页

作者：黄明丽李洪晓丁桦包立马晓斌郝士明东北大学材料与冶金学院沈阳110004 东北大学(秦皇岛分校)材料科学与工程系秦皇岛066004

The crystal structures,compositions and phase relations of the intermetallics of Mg-Zn-Ce system in the Mg-rich corner at 400 ℃ were identified through equilibrium alloy *** Mg-Zn-Ce system,there is a linear ternary compound（T phase）,whose chemical formula is（Mg1-xZnx）*** range of Zn content in T phase is from 9.6% to 43.6%（molar fraction）.The crystal structure of T phase is C-centered orthorhombic lattice with lattice parameters of a=0.96-1.029 nm,b=1.115-1.204 nm,c=0.940-1.015 *** the lattice parameters of T phase are decreasing a little with increasing Zn *** to the results of composition and crystal structure,the maximal solubility of Zn in Mg12Ce is about 7.8%（molar fraction）,and the chemical formula of the solid solution can be identified as（Mg1-xZnx）*** isothermal section of Mg-Zn-Ce system in Mg-rich corner at 400 ℃ was constructed.

关键词： Mg-Zn-Ce system intermetallics crystal structure isothermal section

Phase Diagram Estimation of the Al_2O_3-SiO_2-Re_2O_3 Systems

在线全文

学校读者我要写书评

暂无评论

Advances in Manufacturing 2000年第1期4卷 72-80页

作者： Lin Li Zhu-jun Tang Wei-ying Sun Pei-ling Wang School of Material Science and Engineering Shanghai University Shanghai China State Key Lab of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Science Shanghai China

Nine limiting binaries of Al 2O 3 SiO 2 Re 2O 3 (Re=Nd,Sm,Gd and La) system are assessed. The binary diagrams or experimental information from Toropov, Mizuno, Aramaki, Bondar, Rolin and Coutures are optimized with the substitutional model of Kaufman and Nesor and the approximate formula of fusion free energy for rare earth element oxides of Wu and Pelton. The extracted Gibbs free energies of pure solid oxides and stoichiometric phases and the solution parameters are used to estimate the corresponding binaries, liquidus surfaces and a series of isothermal sections of four ternaries Al 2O 3 SiO 2 Nd 2O 3, Al 2O 3 SiO 2 Sm 2O 3, Al 2O 3 SiO 2 Gd 2O 3, and Al 2O 3 SiO 2 La 2O 3. In the Al 2O 3 SiO 2 Gd 2O 3 system samples as fired at exact temperature with different compositions were analyzed by X ray diffractometer and the detected results are fitted with the calculation of isothermal sections.

关键词： limiting binary assessment ternary system isothermal section liquidus surface

FeO-CaO-TiO2三元系1873K等温截面的计算

在线全文

学校读者我要写书评

暂无评论

FeO-CaO-TiO2三元系1873K等温截面的计算