Abstract
The effect of SiO2/Al2O3and TiO2/SiO2ratios on the viscosity of the TiO2-MnO-SiO2-Al2O3welding flux system was studied using the rotational spindle method. The viscosity was measured at the fully liquid region of the melt from 1 773 K to the break temperature at approximately 1 623 K. Higher TiO2/SiO2ratio resulted in lower viscosity in the temperature range of interest. The SiO2dominant slag system showed higher viscosity values than the Al2O3dominant slag in the present TiO2based system until a SiO2/Al2O3ratio of 1.61. Fourier transform infrared (FTIR) results revealed the [SiO4]4--tetrahedral symmetric stretching vibrations and the [AlO4]5--tetrahedral asymmetric stretching vibration became weaker with higher TiO2/ SiO2, which was also apparent with the increase in the extended basicity ((TiO2+MnO)/(SiO2+Al2O3)). The Al-O-Si bending vibration and [SiO4]4--tetrahedral symmetric stretching vibrations were also pronounced with higher SiO2/Al2O3ratio. From the X-ray photoelectron spectroscopy (XPS) results, the bridged oxygen (O0) slightly decreased with higher TiO2/SiO2and increased with higher SiO2/Al2O3.
| Original language | English |
|---|---|
| Pages (from-to) | 2050-2058 |
| Number of pages | 9 |
| Journal | ISIJ International |
| Volume | 54 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2014 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
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Effect of SiO2/Al2O3and TiO2/SiO2ratios on the viscosity and structure of the TiO2-MnO-SiO2-Al2O3welding flux system. / Kim, Jong Bae; Sohn, Il.
In: ISIJ International, Vol. 54, No. 9, 01.01.2014, p. 2050-2058.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effect of SiO2/Al2O3and TiO2/SiO2ratios on the viscosity and structure of the TiO2-MnO-SiO2-Al2O3welding flux system
AU - Kim, Jong Bae
AU - Sohn, Il
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The effect of SiO2/Al2O3and TiO2/SiO2ratios on the viscosity of the TiO2-MnO-SiO2-Al2O3welding flux system was studied using the rotational spindle method. The viscosity was measured at the fully liquid region of the melt from 1 773 K to the break temperature at approximately 1 623 K. Higher TiO2/SiO2ratio resulted in lower viscosity in the temperature range of interest. The SiO2dominant slag system showed higher viscosity values than the Al2O3dominant slag in the present TiO2based system until a SiO2/Al2O3ratio of 1.61. Fourier transform infrared (FTIR) results revealed the [SiO4]4--tetrahedral symmetric stretching vibrations and the [AlO4]5--tetrahedral asymmetric stretching vibration became weaker with higher TiO2/ SiO2, which was also apparent with the increase in the extended basicity ((TiO2+MnO)/(SiO2+Al2O3)). The Al-O-Si bending vibration and [SiO4]4--tetrahedral symmetric stretching vibrations were also pronounced with higher SiO2/Al2O3ratio. From the X-ray photoelectron spectroscopy (XPS) results, the bridged oxygen (O0) slightly decreased with higher TiO2/SiO2and increased with higher SiO2/Al2O3.
AB - The effect of SiO2/Al2O3and TiO2/SiO2ratios on the viscosity of the TiO2-MnO-SiO2-Al2O3welding flux system was studied using the rotational spindle method. The viscosity was measured at the fully liquid region of the melt from 1 773 K to the break temperature at approximately 1 623 K. Higher TiO2/SiO2ratio resulted in lower viscosity in the temperature range of interest. The SiO2dominant slag system showed higher viscosity values than the Al2O3dominant slag in the present TiO2based system until a SiO2/Al2O3ratio of 1.61. Fourier transform infrared (FTIR) results revealed the [SiO4]4--tetrahedral symmetric stretching vibrations and the [AlO4]5--tetrahedral asymmetric stretching vibration became weaker with higher TiO2/ SiO2, which was also apparent with the increase in the extended basicity ((TiO2+MnO)/(SiO2+Al2O3)). The Al-O-Si bending vibration and [SiO4]4--tetrahedral symmetric stretching vibrations were also pronounced with higher SiO2/Al2O3ratio. From the X-ray photoelectron spectroscopy (XPS) results, the bridged oxygen (O0) slightly decreased with higher TiO2/SiO2and increased with higher SiO2/Al2O3.
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U2 - 10.2355/isijinternational.54.2050
DO - 10.2355/isijinternational.54.2050
M3 - Article
AN - SCOPUS:84907601728
VL - 54
SP - 2050
EP - 2058
JO - ISIJ International
JF - ISIJ International
SN - 0915-1559
IS - 9
ER -