Low-melting bismuth glazes of reducing conditions of firing

Kutateladze, K. S.; Gaprindashvili, George; Odzelashvili, D. G.

doi:10.1007/bf00697548

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“…Other oxides applied in boron frits are Na 2 O, K 2 O, CaO, ZrO 2 , Li 2 O, TiO 2 , etc. [7][8][9]. There is a continuous increase in the requirements for the improvement of technological and aesthetic properties of glazes and enamels.…”

Section: Introductionmentioning

confidence: 99%

The effect of the addition of bismuth (III) oxide on the properties of low-melting boron frits: part 1

et al. 2019

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Low-melting frits are most often applied in the form of coatings for ceramic building materials, i.e., roof tiles and brick façade. A thin layer of glaze or sintered engobe improves decorative and functional properties of the final product. The roof tiles are fired in the low temperature range (1000-1200°C). There are expected solutions which will allow obtaining a smooth layer of glaze without deteriorating mechanical and chemical properties. Thus, it is important to find a solution that meets the above requirements. The aim of this study was to analyze the effect of bismuth (III) oxide on the properties of low-melting different commercial frits used as a main component of glaze for ceramic roof tiles. Three commercial frits were modified with the addition of bismuth (III) oxide in the amount of 5 and 10 wt%. In the first stage, the results of the dilatometric and high-temperature microscopy analysis are shown. Keywords Low-melting frits. Ceramic roof tiles. Low-melting glaze. Bismuth (III) oxide Bi 2 O 3

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Section: Introductionmentioning

confidence: 99%