Accession Number : ADA190535

Title :   Laser Photodeposition and Etching Study.

Descriptive Note : Final rept. 1 Jul 86-30 Jun 87,

Corporate Author : RENSSELAER POLYTECHNIC INST TROY NY DEPT OF MATHEMATICAL SCIENCES

Personal Author(s) : Novick-Cohen, A

PDF Url : ADA190535

Report Date : Jun 1987

Pagination or Media Count : 6

Abstract : The important result reported is that under a distinguished limit procedure an alternative to the K-S Equation is obtained when modelling the evolution of solidification fronts. Three papers are being prepared for publication. Solidification Fronts: Asymptotic equations are derived to model the evolution of the solid liquid interface which occurs in the directional solidification of binary alloys. In the limit where GD/VCo(g + fc) is small, the Kuramoto-Sivashinsky equation is obtained. Viscous Phase Transition: Two equations are derived and analyzed which model the dynamics of viscous first order phase transitions.

Descriptors :   *BINARY ALLOYS, *SOLIDIFICATION, DIRECTIONAL, DYNAMICS, EQUATIONS, ETCHING, INTERFACES, LIQUIDS, MODELS, PHASE TRANSFORMATIONS, SOLIDS, VISCOSITY, LASER APPLICATIONS, DEPOSITION, ASYMPTOTIC NORMALITY, MATHEMATICAL MODELS

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE