Ternary Al-Ag-Ga system was assessed both theoretically using thermodynamic calculations of phase equilibria based on CALPHAD method and experimentally using differential thermal analysis (DTA), scanning electron microscopy (SEM) combined with energy dispersive spectrometry (EDS) and X-ray powder ...
Urban, A Study of the Ternary Phase Diagrams, of Al-Co with Cu, Ag and Au, J. Alloy Compd., 2003, 354(1-2), p 148-152M i S, Grushko B, Dong C, et al. A study of the ternary phase diagram s of A l - Co with Cu, Ag and Au[ J ]. Journal of A lloys and ...
Figure.1—1址Agbinaryphasediagram 图1-2AI-Zn二元相图【52】 Figure.1-2 A1-Zn binaryphasediagram 相图中存在反应有如表1.2。灿.Ag合金的固溶时效过程,基本的析出序列为: sssc…固溶饷一{裟斟:: 2 广西大掌硕士学位论文 Al-Ag・ Zn合金的价电子结构与力掌性能 由图1.1知,至常温下,砧.Ag合金时效的...
Al-Ag System The aluminum-silver orAl-Ag systemis commonly used in thick-film hybrid technologies, to bond an aluminum wire onto athick-filmsilver alloy (with Pt or Pd) bonding pad on the leadframe. The Al-Ag phase diagram is very complex, involving many different intermetallic phases. Al-...
410℃ ISOTHERMAL SECTION OF Al-Cu-Sb PHASE DIAGRAM 用X射线衍射法、μDTA法和金相显微镜法测定了Ag-Cu-P(P<23wt-%)三元系富Cu合金相图500℃等温截面以及这三元系的含2wt—%Ag和含6wt-%P的垂直截面。在500℃等温截面中存... 曾令民,庄应烘,李德萱,... - 《金属学报》 被引量: 0发表: 1991年 ...
结合已有的热力学参数和构建的热物理性质数据库,计算预测了合金的摩尔体积和表面能,并同实验数据进行对比,验证了数据库和程序的可靠性.(2)基于纯元素的表面熔化现象,考虑固液界面对熔化过程的影响,结合吉布斯自由能最小化的热力学原理编写了计算程序Cal Na Phad(Calculation of Nano Phase Diagram),耦合输入参数和...
phase, (θ+α) pseudo binary eutectic and (θ+α+ξ) ter- nary eutectic under free fall and different undercooling conditions. Figure 1 The phase diagram of Al-Cu-Ag ternary alloy [9] . 1 Experimental procedures The Al-30%Cu-18%Ag master alloy is prepared from ...
Based on the Al–Sc phase diagram, when the scandium content reaches the eutectic composition of 0.55 wt% Sc, primary particles of L12 Al3Sc are formed in a eutectic reaction: L + Al3Sc → (Al) at 665 °C, and they in turn act as nucleation sites for α-Al in the molten metal ...
The existence of an icosahedral phase in MgAlAg is better understood on a crystallographic basis rather than on a quantum structural diagram basis. The quasicrystalline structure is delineated in terms of quasiperiodic arrangement of Pauling triacontahedra, which can be identified in the equilibrium ...
Recently, [ 2004Ste ] determined an isothermal section for this ternary system at 497°C for Gd content up to 50at.%. Seven ternary phases are present at this temperature. Binary Systems The Ag-Al phase diagram depicts three intermediate phases: Ag 3 Al (20.5-29.8at.% Al; denoted β, ...