Monotectic Al/Cd alloys with homogeneously dispersed Cd-droplets stabilized by strontium aluminide precipitates

被引：12

作者：

Budai, Istvan ^{[1
,2
]}

Kaptay, George ^{[1
,3
]}

机构：

[1] BAY NANO Res Inst Nanotechnol, Dept Nanocomposites, H-3515 Miskolc, Hungary

[2] Univ Debrecen, Fac Engn, H-4028 Debrecen, Hungary

[3] Univ Miskolc, Dept Nanotechnol, H-3515 Miskolc, Hungary

来源：

INTERMETALLICS | 2011年 / 19卷 / 03期

关键词：

Aluminides; miscellaneous; Alloy design; Phase interfaces; Electron microscopy; scanning; LIQUID INTERFACIAL-TENSION; SOLID PARTICLES; EMULSION STABILIZATION; COLLOIDAL PARTICLES; GA-PB; SYSTEMS; FOAMS; SOLIDIFICATION;

D O I：

10.1016/j.intermet.2010.10.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Al-rich Al-Sr alloys contain dispersed Al4Sr precipitates in the Al-matrix. When melted and emulsified together with a smaller volume of Cd, Cd-rich droplets are formed (being immiscible with the Al-rich liquid). The Al4Sr precipitates prefer the Al/Cd interface, stabilizing the Cd droplets in the Al-matrix. The contact angle of the Cd-rich liquid on Al4Sr intermetallic phase under the Al-rich liquid alloy is about 90 degrees, being ideal for emulsion stabilization. In this way. Al/Cd monotectic alloys can be produced with homogeneously dispersed Cd particles. The key to the success of this process is the in-situ formation of strontium aluminide precipitates stabilizing the Cd droplets in the liquid Al/Cd emulsion. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：423 / 425

页数：3

共 25 条

[1] Stabilization of oil-in-water emulsions by colloidal particles modified with short amphiphiles [J].