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
收藏
页码：27 / 33
页数：7
相关论文
共 50 条
  • [21] SYSTEM CAO-2CAO.SIO2-CAF2
    GUTT, W
    OSBORNE, GJ
    TRANSACTIONS OF THE BRITISH CERAMIC SOCIETY, 1970, 69 (03): : 125 - +
  • [22] Dissolution Behavior of Solid 5CaO•SiO2•P2O5 in CaO-SiO2-FeOx Slag
    Yang, Xiao
    Matsuura, Hiroyuki
    Tsukihashi, Fumitaka
    MATERIALS TRANSACTIONS, 2010, 51 (06) : 1094 - 1101
  • [23] Dissolution behavior of SiO2 into molten CaO-FeO phase
    Miki T.
    Kawakami A.
    ISIJ International, 2020, 60 (07): : 1434 - 1437
  • [24] Measurement of hydrogen reduction rates of FeO in 2FeO•SiO2 and CaO•FeO•SiO2
    Ono-Nakazato, H
    Tsubone, Y
    Takaki, Y
    Usui, T
    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 2001, 87 (05): : 320 - 326
  • [25] Effect of Al2O3/SiO2 and CaO/Al2O3 ratios on wettability and structure of CaO–SiO2–Al2O3-based mold flux system
    Wan-lin Wang
    Er-zhuo Gao
    Le-jun Zhou
    Lei Zhang
    Huan Li
    Journal of Iron and Steel Research International, 2019, 26 : 355 - 364
  • [26] Phase Equilibria in the System "FeO"-CaO-SiO2-Al2O3-MgO with CaO/SiO2 1.3
    Jang, Kyoung-oh
    Ma, Xiaodong
    Zhu, Jinming
    Xu, Haifa
    Wang, Geoff
    Zhao, Baojun
    ISIJ INTERNATIONAL, 2016, 56 (06) : 967 - 976
  • [27] Effect of CaO/SiO2 Ratio on Surface Tension of CaO-SiO2-Al2O3-MgO Melts
    Sukenaga, Sohei
    Higo, Tomoyuki
    Shibata, Hiroyuki
    Saito, Noritaka
    Nakashima, Kunihiko
    ISIJ INTERNATIONAL, 2015, 55 (06) : 1299 - 1304
  • [28] THERMODYNAMIC ANALYSIS OF SYSTEM 2 CAO MGO 2 SIO2-CAO MGO 2 SIO2 .1. ENTHALPIC ANALYSIS OF SYSTEM
    ELIASOVA, M
    PROKS, I
    ZLATOVSKY, I
    SILIKATY, 1978, 22 (02): : 97 - 108
  • [29] The effect of CaO/SiO2 molar ratio of CaO-Al2O3-SiO2 glasses on their structure and reactivity in alkali activated system
    Kucharczyk, Sylwia
    Sitarz, Maciej
    Zajac, Maciej
    Deja, Jan
    SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 2018, 194 : 163 - 171
  • [30] The influence of CaO on the chemical activity of a flux of CaO-MnO-SiO2system with a constant MnO/SiO2relation
    Cruz-Crespo, Amado
    Puchol, Rafael Quintana
    Perdomo, Lorenzo
    Gómez, Carlos
    García-Jacomino, Jorge L.
    Cedré, Eduardo Díaz
    Revista de la Facultad de Ingenieria, 2009, 24 (01): : 117 - 123
12345