-
- Home
- Journals
- Bulletin of Materials Science
- Volume 9
- Issue 4
-
Undercooling studies on dispersed bismuth droplets
Sanjay Chaubey Vakil Singh P Ramachandrarao
Volume 9 Issue 4 November 1987 pp 277-285
-
-
Fulltext
Click here to view fulltext PDF
Permanent link:
https://www.ias.ac.in/article/fulltext/boms/009/04/0277-0285 -
Keywords
Undercooling ;nucleation ;bismuth -
Abstract
In the zinc-bismuth system, a monotectic reaction occurs at 689 K and 0·6 at.% Bi composition. Rapid solidification of the as-cast monotectic alloy led to a micromorphology in which bismuth was uniformly and bimodally distributed as small droplets in the zinc matrix. Statistical analysis of the electron micrographs obtained from different transparent regions of the foils revealed that the size of most of the droplets was about 6 nm. These droplets undercooled by 132 K. An analysis of the nucleation rate measurements shows that the activation energy barrier to nucleation is of the order of 39·8 kcal/mol at the maximum undercooling.
-
Author Affiliations
Sanjay Chaubey1 Vakil Singh1 P Ramachandrarao1 2
- Department of Metallurgical Engineering, Banaras Hindu University, Varanasi - 221 005, India
- School of Materials Science and Technology, Institute of Technology, Banaras Hindu University, Varanasi - 221 005, India
-
Dates
- Published
- November 1987
- Manuscript received
- 18 April 1987
- Manuscript revised
- 2 July 1987
-
-
Bulletin of Materials Science
Volume 46, 2023
All articles
Continuous Article Publishing mode
-
Bulletin of Materials Science | News
-
Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020 -
Editorial Note on Continuous Article Publication
Posted on July 25, 2019Click here for Editorial Note on CAP Mode
-