Laser Sealing for Vacuum Plate Glass with PbO-TiO2-SiO2-RxOy Solder

Journal article


Miao, H., Zhang, L., Liu, S., Zhang, S., Memon, S. and Zhu, B. (2020). Laser Sealing for Vacuum Plate Glass with PbO-TiO2-SiO2-RxOy Solder. Sustainability. 12 (8), pp. 3118-3118. https://doi.org/10.3390/su12083118
AuthorsMiao, H., Zhang, L., Liu, S., Zhang, S., Memon, S. and Zhu, B.
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-TiO2-SiO2-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 2mm/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 ℃ 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.

Year2020
JournalSustainability
Journal citation12 (8), pp. 3118-3118
PublisherMDPI AG
ISSN2071-1050
Digital Object Identifier (DOI)https://doi.org/10.3390/su12083118
Publication dates
Online13 Apr 2020
Publication process dates
Accepted09 Apr 2020
Deposited20 Apr 2020
Publisher's version
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Open
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