Effect of zone-refining on the structure of irregular eutectics

Journal Article · Sat Sep 01 04:00:00 EDT 1973 · Journal of Crystal Growth

DOI:https://doi.org/10.1016/0022-0248(73)90124-3· OSTI ID:4403816

Kumar, Lalit; Merchant, H. D.

Seven eutectic alloys (Pb-- Sb, Bi-- Cd, Zn-- Zn/sub 3/Sb/sub 2/, Bi-- BiPb/su b 2/, Bi-- Sn, Bi-- Zn, and Sn-- Zn) made from 99.99% purity components were zone-refined in argon atmosphere to reduce further their impurity content. The zone-refined alloys were zone-leveled and directionally solidified. Several basic morphological changes were observed: coarsening (Pb-- Sb), orientation of the minor phase along growth direction, some breakdown of regularity in the complex regular structure (Bi-- BiPb/sub 2/, Bi-- Sn), and horizontal alignment of the minor phase by rotation about the growth axis (Bi-- Cd, Bi-- Zn, Sn-- Zn). Three classes of refined structures were obtained: irregular (Pb-- Sb, Bi-- BiPb/ sub 2/, Bi-- Sn), brokenlamellar (Bi-- Cd, Br-- Zn), and broken-rod (Zn-- Zn/sub 3/Sb/sub 2/, Sn-- Zn).

• Research Organization: Indian Inst. of Tech., Kanpur
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-003059
• OSTI ID: 4403816
• Journal Information: Journal of Crystal Growth, Journal Name: Journal of Crystal Growth Journal Issue: 2 Vol. 20; ISSN 0022-0248
• Publisher: Elsevier
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANTIMONY ALLOYS-- LEAD ALLOYS
BISMUTH ALLOYS-- CADMIUM ALLOYS
BISMUTH ALLOYS-- LEAD ALLOYS
BISMUTH ALLOYS-- ZINC ALLOYS
EUTECTICS
LEAD ALLOYS-- ZINC ALLOYS
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
TIN ALLOYS-- ZINC ALLOYS
ZONE REFINING BISMUTH ALLOYS-- TIN ALLOYS