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Laser Sealing for Vacuum Plate Glass with PbO-TiO 2 -SiO 2 -RxOy Solder

Author

Listed:
  • Hong Miao

    (College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China)

  • Lingcong Zhang

    (College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China)

  • Sixing Liu

    (College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China)

  • Shanwen Zhang

    (College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China)

  • Saim Memon

    (London Centre for Energy Engineering, School of Engineering, London South Bank University, London SE1 0AA, UK)

  • Bi Zhu

    (College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, China)

Abstract

Laser sealing for vacuum plate glass is a key step in developing the cost-effective smart vacuum-glass window for the drive towards net-zero energy buildings. In this paper, the pores, cracks, and interface with laser welding are analyzed in depth using PbO-TiO 2 -SiO 2 -RxOy system sealing solder to prepare vacuum flat glass. The microstructure of the sealing layer was analyzed by a BX41M-LED metallographic microscope, and the interfacial bonding characteristics were observed by thermal field emission scanning electron microscopy (SEM). The solder was analyzed by an energy spectrometer, and the influence of laser power, sealing temperature, and sealing speed on the gas holes and the crack sand interface separation of the sealing layer are reported. The results show that when the laser power reached 80 W at the welding speed of 2 mm/s, the bulk solder disappeared to most of the quantity and the sealing surface density was higher, due to which negligible pores and micro cracks were found. Thus, the sealing quality of the sealing layer is considered to be suitable when the temperature of 470 °C was maintained and the solder has 68.93% of Pb and 3.04% Si in the atom fraction to achieve the wet the glass substrate surface whilst improving the bonding quality.

Suggested Citation

  • Hong Miao & Lingcong Zhang & Sixing Liu & Shanwen Zhang & Saim Memon & Bi Zhu, 2020. "Laser Sealing for Vacuum Plate Glass with PbO-TiO 2 -SiO 2 -RxOy Solder," Sustainability, MDPI, vol. 12(8), pages 1-9, April.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:8:p:3118-:d:344919
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    References listed on IDEAS

    as
    1. Memon, Saim & Fang, Yueping & Eames, Philip C., 2019. "The influence of low-temperature surface induction on evacuation, pump-out hole sealing and thermal performance of composite edge-sealed vacuum insulated glazing," Renewable Energy, Elsevier, vol. 135(C), pages 450-464.
    2. Fang, Yueping & Memon, Saim & Peng, Jingqing & Tyrer, Mark & Ming, Tingzhen, 2020. "Solar thermal performance of two innovative configurations of air-vacuum layered triple glazed windows," Renewable Energy, Elsevier, vol. 150(C), pages 167-175.
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    Cited by:

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    2. Li, Y. & Arulnathan, V. & Heidari, M.D. & Pelletier, N., 2022. "Design considerations for net zero energy buildings for intensive, confined poultry production: A review of current insights, knowledge gaps, and future directions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 154(C).

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