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J. Korean Ceram. Soc. > Volume 58(5); 2021 > Article
Journal of the Korean Ceramic Society 2021;58(5): 566-573.
doi: https://doi.org/10.1007/s43207-021-00131-7
Transparent alumino-boro-phosphate glass coating on a thermally tempered soda-lime silicate glass substrate
Hansol Lee1, In Gun Kim2, Tae Hee Kim3, Tae Ho Kim3, Woon Jin Chung1
1Division of Advanced Materials Engineering, Institute for Rare Metals, Kongju National University, 1223-24 Cheonan-daero, Seobuk-gu, Cheonan, Chungnam 31080, Republic of Korea
2R&D New Business Division Team, UTI Corp, 78-19, Sili-gil, Eungbong-myeon, Yesan-gun, Chungcheongnam-do 32447, Republic of Korea
3Appliance Lab in HA Company, LG Electronics Gasan R&D Campus, 51, Gasan digital 1-ro, Geumcheon-gu, Seoul, Republic of Korea
Correspondence  Woon Jin Chung ,Email: wjin@kongju.ac.kr
Received: April 27, 2021; Revised: July 22, 2021   Accepted: July 26, 2021.  Published online: September 30, 2021.
Alumino-boro-phosphate (ABP) glass, which is generally used as a porcelain enamel material on a metal surface, was applied on the surface of thermally strengthened soda-lime silicate (SLS) glass. The ABP glass was coated by screen printing and formed using the conventional thermal tempering process for soda-lime glass. The coefficient of thermal expansion (CTE) of the ABP glass was adjusted by compositional change to minimize thermal shock between the coated layer and the SLS glass substrate. The coated ABP glass layer induced haze and decreased the transmittance of the SLS glass. The haze was reduced by controlling the powder size of the ABP glass. However, a significant enhancement in transmittance was achieved with the addition of ZnO nano-powder, achieving transmittance up to 85%. The origin of the haze and the eff ect of the nano-powder on transmittance were investigated with XRD and SEM/EDS and discussed.
Key words: Phosphate glass · Enamel · Coating · Nano-powder · Tempered glass
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