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Initial Wetting and Spreading Rates Between SiC and CaO-SiO2-MnO Slag

Title
Initial Wetting and Spreading Rates Between SiC and CaO-SiO2-MnO Slag
Author
박주현
Keywords
SILICON-CARBIDE; WETTABILITY; SYSTEMS; ALLOYS
Issue Date
2016-06
Publisher
SPRINGER
Citation
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, v. 47, NO 3, Page. 1832-1838
Abstract
The wetting of CaO-SiO2-MnO slag on silicon carbide was studied with a variety of slag compositions at 1823 K (1550 A degrees C). Wetting experiments were performed by the dispensed drop technique. We observed complete wetting of the slag on SiC (within 1 second) without a bubble reaction regardless of the basicity (=CaO/SiO2 = C/S ratio). However, after 8 seconds, the bubble reaction was observed under conditions of C/S = 0.8 and 1.1, whereas it was not observed at temperatures lower than 1823 K (1550 A degrees C). The contact angle was independent of MnO content, while the spreading rate increased with the increasing MnO content at the early stage of wetting. Inertial force acts on the early stage of spreading, and viscous force acts with lower MnO content due to higher viscosity. The low-viscosity slag did not fit with the nonreactive viscous model. However, the high-viscosity slag fitted the model well. (C) The Minerals, Metals Materials Society and ASM International 2016
URI
https://link.springer.com/article/10.1007/s11663-016-0606-0http://hdl.handle.net/20.500.11754/65507
ISSN
1073-5615; 1543-1916
DOI
10.1007/s11663-016-0606-0
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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