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High-Temperature Wettability Investigations on Laboratory-Developed CaO-CaF2-SiO2 -Al2O3 Flux System-Based Welding Electrode Coatings for Power Plant Applications

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Abstract

This article is an attempt to examines high-temperature wettability properties of laboratory-developed electrode coatings for power plant applications. The properties include contact angle between the solid/liquid interfaces, spreading area, surface tension, and work of adhesion. Coatings were prepared using CaO-CaF2-SiO2 -Al2O3 basic flux system. The sessile drop method was used to estimate the contact angle at the liquid/solid interface while surface tension was calculated using Young’s and Boni’s equations based on the measured contact angle. The interaction effect of individual minerals and their binary mixtures (CaO.CaF2, CaO.SiO2, CaO.Al2O3, CaF2.SiO2, CaF2.Al2O3, and SiO2.Al2O3) on the wettability properties were studied using the regression analysis. Optimum flux compositions were estimated using Multi-response optimization. The contact angle decreases when basic oxides (CaO, CaF2) were added in a higher proportion than the acidic oxides. With the decrease in the contact angle spreading area increased and CaF2 comes out to be the significant constituent causes the increase in the spreading area. Binary mixtures CaO.CaF2, CaO.SiO2, and CaF2.SiO2 has an increasing effect on the work of adhesion.

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References

  1. 1.

    Polar A, Indacochea JE, Blander M (1990) Fundamentals of the chemical behaviour of select welding fluxes. Weld Res Suppl 352:15s–19s

  2. 2.

    W. Spraragen. Fluxes and slags in welding. Transaction of faraday society, 1924, 68-175. change to W. Spraragen. Fluxes and slags in welding. Trans. Faraday Soc., 1924, 20, 168-175.

  3. 3.

    T.H. North, H.B Bell, A. Nowicki. Slag/metal interaction, oxygen, and toughness in submerged arc welding. Supplement to Welding Journal. 1978, 63s–75s. Change to T.H. North, H.B Bell, A. Nowicki. Slag/metal interaction, oxygen, and toughness in submerged arc welding. Welding Research Supplement. March 1978, 63s–75s.

  4. 4.

    Sham K, Liu S (2014) Flux coating development for SMAW consumable electrode of high nickel alloys. Weld J 93:271–281

  5. 5.

    Ushio M, Zaghloul B, Metawally W (1995) Effect of submerged arc welding flux chemical composition on weldment performance. Trans JWRI 24:45–53

  6. 6.

    Palm JH (1972) How fluxes determine the metallurgical properties of submerged welds. Weld J 51:358s–360s

  7. 7.

    Pandey ND, Bharti A, Gupta SR (1994) Effect of submerged arc welding parameters and fluxes on element transfer behaviour and weld-metal chemistry. J Mater Process Technol 40:195–211

  8. 8.

    Natalie CA, Olson DL (1986) Physical and chemical behaviour of welding fluxes. Annu Rev Mater Sci 16:389–413

  9. 9.

    Amado CC, Rafael FF, Scotti A (2010) The influence of calcite, fluorite, and rutile on the fusion-related behavior of metal cored coated electrodes for hardfacing. JMEPEG 19:685–692

  10. 10.

    Mahajan S, Chhibber R (2019) Design and development of CaO-SiO2-CaF2 and CaO-SiO2-Al2O3 based electrode coatings to weld low alloy ferritic steels for power plant applications. Ceram Int 45A:2329–2348

  11. 11.

    Mahajan S, Chhibber R (2019) Design and development of Shielded Metal Arc Welding (SMAW) electrode coatings using a CaO-SiO2-CaF2 and CaO-SiO2-Al2O3 flux system. JOM 71:2435–2444

  12. 12.

    Kim JB, Choi JK, Han IW, Sohn I (2015) High-temperature wettability and structure of the TiO2–MnO–SiO2–Al2O3 welding flux system. J Non-Cryst Solids 432:218–226

  13. 13.

    Kingery WD, Humenic M (1953) Surface tension at elevated temperatures. I. Furnace and method for use of the sessile drop method; surface tension of silicon, iron and nickel. J Phys Chem 57:359–363

  14. 14.

    Joshi R, Chhibber R (2017) High temperature wettability studies for the development of unmatched glass-metal joints in solar receiver tube. Renew Energy 119:282–289

  15. 15.

    Yanhui L, Xuewei LV, Chenguang B, Bin YU (2014) Surface tension of the molten blast furnace slag bearing TiO2: measurement and evaluation. ISIJ Int 54(10):2154–2161

  16. 16.

    H. Shigeta, O. Kazumi. The Densities and the Surface Tensions of Fluoride Melts. ISIJ International. 1989, 29(6), 477 485. change to H. Shigeta, O. Kazumi. The Densities and the Surface Tensions of Fluoride Melts. ISIJ International. 1989, 29, 477 485.

  17. 17.

    Jung EJ, Kim W, Sohn I, Min DJ (2010) A study on the interfacial tension between solid iron and CaO–SiO2–MO system. J Mater Sci 45:2023–2029

  18. 18.

    K.P. Ferrera, D.L. Olson. Performance of the MnO–SiO2–CaO system as welding flux. Welding Research Supplement. 1975, 211–215. change to K.P. Ferrera, D.L. Olson. Performance of the MnO–SiO2–CaO system as welding flux. Welding Research Supplement. July 1975, 211s–215s.

  19. 19.

    Sharan A, Cramb AW (1995) Interfacial tensions of liquid Fe–Ni alloys and stainless steels in contact with CaO–SiO2–Al2O3–based slags at 1550°C. Metall Mater Trans B Process Metall Mater Process Sci 26B:87–93

  20. 20.

    Li JG (1992) Wetting and interfacial bonding of metals with ionocovalent oxides. J Am Ceram Soc 75:3118–3126

  21. 21.

    Anderson VL, McLean RA (1974) Design of experiments: a realistic approach. Marcel Dekker, Inc., New York

  22. 22.

    Sharma L, Chhibber R (2019) Investigating the physicochemical and thermophysical properties of submerged arc welding fluxes using TiO2-SiO2-MgO and SiO2-MgO-Al2O3 flux system for linepipe steel. Ceram Int 45(2):1569–1587

  23. 23.

    Bhandari D, Chhibber R, Arora N (2016) Investigation of TiO2-SiO2-CaO-CaF2 based electrode coatings on weld metal chemistry and mechanical behaviour of bimetallic weld. J Manuf Process 23:61–74

  24. 24.

    Sharma L, Chhibber R (2019) Design and development of submerged arc welding fluxes slags using CaO-SiO2-CaF2 and CaO-SiO2-Al2O3 system. Silicon. https://doi.org/10.1007/s12633-019-0068-5

  25. 25.

    Rada S, Culea M, Culea E (2008) Structure of TeO2-B2O3 glasses inferred from infrared spectroscopy and DFT calculations. J Non-Cryst Solids 354(52–54):5491–5495

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Correspondence to Sumit Mahajan.

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Mahajan, S., Kumar, J. & Chhibber, R. High-Temperature Wettability Investigations on Laboratory-Developed CaO-CaF2-SiO2 -Al2O3 Flux System-Based Welding Electrode Coatings for Power Plant Applications. Silicon (2020). https://doi.org/10.1007/s12633-019-00374-4

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Keywords

  • Coating compositions
  • Wettability
  • Contact angle
  • Regression analysis
  • Surface tension
  • Spreading area