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Entwicklung eines Mischers zur Herstellung von partikelverstärkten Aluminiumemulsionen und monotektischen Legierungen
Author(s) -
Budai I.
Publication year - 2012
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201200952
Subject(s) - intermetallic , wetting , materials science , aluminium , crucible (geodemography) , mixing (physics) , phase (matter) , particle (ecology) , matrix (chemical analysis) , chemical engineering , sedimentation , liquid phase , metallurgy , homogeneous , composite material , alloy , chemistry , thermodynamics , physics , oceanography , organic chemistry , quantum mechanics , sediment , engineering , biology , geology , paleontology , computational chemistry
Aluminum matrix monotectic alloys with a homogeneous distribution of the second phase droplets can be obtained in large ingots, if the droplets are stabilized by solid particles of optimized wettability at the interface of the two, immiscible liquid metals. In this paper, Al‐matrix emulsions with Cd‐rich droplets, stabilized by Al 4 Sr intermetallic particles are prepared, based on our previous paper. The new information in the present paper is the development of a new type of a mixer, allowing increased rotational speed, and hence, more efficient emulsification without the danger of mixing the liquid metals out of the crucible. As the comparative experiments proved, the ratio of emulsified Cd‐rich liquid was found to increase considerably when the old mixer was replaced by the new one. Particularly, there is no 1‐phase Cd‐rich sedimentation found at the bottom of the crucible when the mixer of the new design is applied.