msepostdoc-list Seminar Reminder for Alexander Strayer's Preliminary Exam: Seminar Wednesday, Dec. 13, at 8:30 a.m., in ARMS 3115; Exam, same day, at 10:00, in ARMS 2237. " Physiochemical Interaction of SiC with Si-Based Melts"

[Son, Rosemary E]

Please consider attending the following:

MATERIALS ENGINEERING
SEMINAR


"Physiochemical Interaction of SiC with Si-Based Melts"


By
Alexander R. Strayer
Purdue MSE Ph.D. Preliminary Exam

Advisor: Professor Kenneth H. Sandhage



ABSTRACT


Silicon Carbide is an industrially important non-oxide ceramic because of its combination of chemical stability, thermal fatigue resistance, high stiffness, and low density. Additionally, SiC can be produced economically in near net-shape structures via liquid silicon melt infiltration into a silicon carbide/carbon porous preform. However, pure liquid Si and solid SiC cannot exist in equilibrium as there is a small amount of carbon solubility in liquid Si. Hence during infiltration dissolution of SiC in liquid Si is possible.  In order to mitigate this problem, a better understanding of the physicochemical interaction between silicon carbide and liquid silicon melts is warranted.  Here, a number of key publications are reviewed.  Possible rate limiting steps for the dissolution are discussed, and major factors contributing to the kinetics such as poly-type, melt dopants, and atmosphere are explored along with current experiments and results aimed at filling the voids left in the literature on the topic.






Date: Wednesday, December 13, 2017

Time: 8:30 A.M.
Place: ARMS 3115

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