Effect of NaF and CaO/SiO2 on the Hydrogen Dissolution in the CaO-SiO2-FeOt Based Flux System

被引：5

作者：

Chung, Sung Hoon ^{[1
]}

Park, Jun-Yong ^{[1
]}

Park, Sea-Jung ^{[2
]}

Chang, Woong-Seong ^{[2
]}

Sohn, Il ^{[1
]}

机构：

[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea

[2] Res Inst Ind Sci & Technol, Pohang, South Korea

来源：

ISIJ INTERNATIONAL | 2013年 / 53卷 / 01期

关键词：

NaF; CaO/SiO2; hydrogen solubility; welding flux; FTIR; Raman; SILICATE MELTS; IRON; SPECTRA; STEEL;

D O I：

10.2355/isijinternational.53.27

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The compositional effect of NaF and CaO/SiO2 on the hydrogen solubility in the NaF-CaO-SiO2-FeOt welding flux system at 1 823 K is presented. At a CaO/SiO2 of 1.3, higher NaF decreased the hydrogen solubility and at a CaO/SiO2 of 1.5, higher NaF had relatively little effect on the hydrogen solubility in the flux. The hydrogen solubility with CaO/SiO2 showed a parabolic behavior showing a minimum near unit basicity and increasing with higher basicity. FTIR (Fourier transform infra red) and Raman spectroscopy of as-quenched flux samples showed the addition of NaF and higher CaO/SiO2 depolymerized the flux structure. At low and intermediate basicities from 0.9 to 1.3, higher NaF decreased the incorporated hydroxyl sites of Si(OH) and FeO(OH), which correlates well to lower hydrogen values.

引用

页码：27 / 33

页数：7

共 50 条

[1] Effect of FeOt Content and CaO/SiO2 Ratio on Hydrogen Dissolution in CaF2-CaO-SiO2-Based Welding Fluxes
Park, Jun-Yong
Park, Seo-Jung
Chang, Woong-Seong
Sohn, Il
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2012, 95 (05) : 1756 - 1763
[2] The effect of the CaO/SiO2 ratio on the phase equilibria in the ZnO-“Fe2O3”-(PbO + CaO + SiO2) system in air: CaO/SiO2 = 0.1, PbO/(CaO + SiO2) = 6.2, and CaO/SiO2 = 0.6, PbO/(CaO + SiO2) = 4.3
Evgueni Jak
Peter C. Hayes
Metallurgical and Materials Transactions B, 2003, 34 : 369 - 382
[3] KINETICS OF DISSOLUTION OF CAO, 3CAO.SIO2, 2CAO.SIO2 AND SIO2 IN THE LIQUID PHASE OF CEMENT CLINKER
TOROPOV, NA
RUMYANTSEV, PF
FILIPOVICH, VN
ZHURNAL FIZICHESKOI KHIMII, 1964, 38 (04): : 974 - 978
[4] Quantitative regulation of CaO, 3 CaO.SiO2, 2CaO. SiO2, 3CaO . 2SiO(2), CaO. SiO2 and SiO2 together.
Jander, W
Hoffmann, E
ANGEWANDTE CHEMIE, 1933, 46 : 76 - 80
[5] Hydrogen Dissolution in the CaF2-CaO-SiO2 System
Park, Jun-Yong
Han, Jin-Sou
Sohn, Ii
ISIJ INTERNATIONAL, 2011, 51 (11) : 1788 - 1794
[6] The effect of the CaO/SiO2 ratio on the phase equilibria in the ZnO-"Fe2O3"-(PbO+CaO+SiO2) system in air:: CaO/SiO2=0.1, PbO/(CaO+SiO2)=6.2, and CaO/SiO2=0.6, PbO/(CaO+SiO2)=4.3
Jak, E
Hayes, PC
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2003, 34 (04): : 369 - 382
[7] Effect of NaF and CaO/SiO2 Mass pct. on the Hydrogen Dissolution Behavior in Calcium-Silicate-Based Molten Fluxes
Chung, Sung Hoon
Sohn, Il
METALS AND MATERIALS INTERNATIONAL, 2019, 25 (06) : 1626 - 1634
[8] Effect of NaF and CaO/SiO2 Mass pct. on the Hydrogen Dissolution Behavior in Calcium-Silicate-Based Molten Fluxes
Sung Hoon Chung
Il Sohn
Metals and Materials International, 2019, 25 : 1626 - 1634
[9] Dissolution of Lime in Synthetic 'FeO'-SiO2 and CaO-'FeO'-SiO2 Slags
Deng, T.
Gran, J.
Sichen, D.
STEEL RESEARCH INTERNATIONAL, 2010, 81 (05) : 347 - 355
[10] Experimental liquidus in the PbO-ZnO-“Fe2O3”-(CaO + SiO2) System in Air, with CaO/SiO2 = 0.35 and PbO/(CaO + SiO2) = 3.2
Evgueni Jak
Peter C. Hayes
Metallurgical and Materials Transactions B, 2002, 33 : 851 - 863

← 1 2 3 4 5 →