Phase Diagrams and Physical Properties of Nonequilibrium AlloysNonequilibrium Phase Diagrams of Ternary Amorphous AlloysSummary This document is part of Subvolume A 'Nonequilibrium Phase Diagrams of Ternary Amorphous Alloys' of Volume 37 'Phase Diagrams and Physical Properties of Nonequilibrium Alloys' ...
The 15th National Conference of Phase Diagrams of China and Multilateral Symposium 011 Phase Diagrams and Materials Design Cu.Sn二元系统相图的第一性原理研究 周伟,穆文凯,刘卫芳,刘立娟,吴萍 (天津大学理学院物理系,天津300072) 摘要:Sn基合金是目前微电子封装领域使用的的主要材料,但目前对于二元Cu-Sn系统研...
Phase diagram investigation of the Cu–Sn system was carried out on twenty Cu-rich samples by thermal analysis (DTA), metallographic methods (EPMA/SEM-EDX) and crystallographic analysis (powder XRD, high temperature powder XRD). One main issue in this work was to investigate the high temperature...
Melting temperatures of Sn–Ag–Cu (SAC) alloys in the Sn-rich corner are of interest for lead-free soldering. At the same time, nanoparticle solders with depressed melting temperatures close to the Sn–Pb eutectic temperature have received increasing attention. Recently, the phase stability of ...
Peritectic alloy Cu-10.5 at.% Sn was directionally solidified at various growth speeds under a transverse static magnetic field. The experimental results indicated that the magnetic field caused the deformation of macroscopic interface morphology, the crystal orientation of primary phase along solidific...
This group of rocks has a unique distribution of trace elements on a primitive mantle-normalized diagram (Fig. 8D). Although the Ba, K, and Pb contents are higher relative to the elements on both sides, LILE and LREE in these rocks are generally depleted compared to HFSE and HREE, and...
本文拟通过对小多宝山花岗闪长岩进行岩石地球化学, 锆石 U Pb及 Hf同位素等研究,查明小多宝山成岩成矿时代 及其岩浆源区,岩石成因和成岩构造背景,对提高该矿床成 矿理论认识水平,并为三矿沟 多宝山成矿带构造 岩浆演化 与多金属成矿作用研究提供重要依据. 1 地质背景 1 1 区域地质 小多宝山 矽卡岩型 ...
对于传 统含铅 SnPb 钎料接头来说,含有大量的 Pb 导致三元金属间化合物在 Ni3Sn4 界面处发生再沉淀,而新型的无铅钎料接头中则不会出现这种情况[22]。对于这 种现象,有研究人员认为由于在老化过程中易脆的三元金属间化合物并没有迁 移到界面,所以 SnAgCu 三元体系中根本就没有由于 Au 的存在而导致的脆化问题...
According to the Sn–Bi phase diagram in Fig. 9, the solubility of Bi in the Sn matrix at room temperature is close to 3%, indicating that the addition of 2% Bi improves the shear strength of the solder joints mainly through solid solution strengthening. With the addition of 5% Bi, the...
10 November 2015 Liquid-liquid phase separation of freely falling undercooled ternary Fe-Cu-Sn alloy W .L. Wang, Y. H. Wu, L. H. Li, W. Zhai, X. M. Zhang & B. Wei The active modulation and control of the liquid phase separation for high-temperature metallic...