𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The dispersion mechanism of TiB2 ceramic phase in molten aluminium and its alloys

✍ Scribed by A Jha; C Dometakis

Publisher
Elsevier Science
Year
1997
Weight
791 KB
Volume
18
Category
Article
ISSN
0261-3069

No coin nor oath required. For personal study only.

✦ Synopsis

Titanium diboride TiB ceramic particulates are dispersed in molten aluminium and its alloys for grain 2 refining and for making cast metal1matrix composites. For producing cast MMC, the dispersion of the ceramic phase via in-situ aluminothermic reduction of K TiF and KBF flux mixture with molten 2 6 4 aluminium and, via the addition of exogenously formed TiB with the fluoride flux has been studied at 2 900ЊC. In this article, the aspects of interfacial energy that govern the dispersion and agglomeration of TiB particulates are examined. The Gibbs-adsorption interface equation is particularly employed to 2 define and to quantify the change in the surface energy as a function of the alloying element concentration and, consequently the effect of interfacial energy on the nucleation rate of TiB formed 2 via metallothermic reduction reaction and the size of the ceramic phase is also explained.

πŸ“œ SIMILAR VOLUMES

The determination of sodium in aluminium
The determination of sodium in aluminium and its alloys
✍ Smart, R. πŸ“‚ Article πŸ“… 1943 πŸ› Wiley (John Wiley & Sons) βš– 535 KB

It is concluded from experiments on the pH vrilues iind nhiiking times of vnrious anmples of Mount Sorrel granite thnt the pH rnluc hns little or no connexion with adhesion and it is considered thut this applies in general to nll stones. The pH depends on the grading rind appenrs to be rnther fortui