<P>The effect of TiO2/SiO2 and SiO2/Al2O3 ratio on the wettability of the TiO2-MnO-SiO2-Al2O3 quaternary welding flux system was studied using the sessile drop method by measuring the contact angle at the liquid/solid interface. The contact angl...
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https://www.riss.kr/link?id=A107643472
Kim, J.B. ; Choi, J.K. ; Han, I.W. ; Sohn, I.
2016
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Wettability ; FTIR ; Raman ; XPS ; Slag structure
SCI,SCIE,SCOPUS
학술저널
218-226(9쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>The effect of TiO2/SiO2 and SiO2/Al2O3 ratio on the wettability of the TiO2-MnO-SiO2-Al2O3 quaternary welding flux system was studied using the sessile drop method by measuring the contact angle at the liquid/solid interface. The contact angl...
<P>The effect of TiO2/SiO2 and SiO2/Al2O3 ratio on the wettability of the TiO2-MnO-SiO2-Al2O3 quaternary welding flux system was studied using the sessile drop method by measuring the contact angle at the liquid/solid interface. The contact angle was measured at 1773 K to determine the relationship between wettability and flux structure, which is affected by the flux composition. The surface and interfacial tensions of the TiO-MnO-SiO2-Al2O3 flux system were calculated using Boni's equation and Young's equation, respectively, based on the measured contact angle. The adhesion energy, which corresponds to the energy required to separate the flux from a substrate, was calculated using Dupre's equation. The interfacial tension between the liquid flux and Pt-10Rh decreased and the surface tension increased with higher TiO2 and Al2O3. The results of the Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) analyses of as-quenched fluxes from 1773 K also support the structural relationship with the wettability. It was found that both O- (non-bridged oxygen) and O2- (free oxygen) affect the interfacial tension between the flux and the substrate. (C) 2015 Elsevier B.V. All rights reserved.</P>