Low-temperature roasted wollastonite in designingeasily meltable glazes of an increased hardness

Authors

DOI:

https://doi.org/10.15587/1729-4061.2015.43446

Keywords:

wollastonite, calcium hydrocilicates, tobermorite, glaze coatings/surfaces, melting property, microhardness

Abstract

The study explores the impact of wollastonite, synthesized by a two-stage technology of autoclave calcium hydrosilicate and its low-temperature roasting to silicate, on the process of melting ceramic glaze coatings, as well as on their surface properties, including microhardness.

The research findings reveal the temperature points for softening, melting and spreading of wollastonite-based glaze coatings within the temperature range of 840-1100°С. We have studied how heated glaze melting processes depend on the amount of synthetic wollastonite and how the dynamics of diameter change in the cylindered samples due to the content of calcium silicate and the temperature of roasting.

The research shows that the added synthetic low-temperature wollastonite increases the microhardness of the glazed surface samples, which is important for production of facing materials that are vulnerable to abrasion. The findings show that the optimal content of synthetic wollastonite is 20-30%, and the optimal roasting temperature for wollastonite-based glazes is 1050°C.

The research has proved that synthetic wollastonite increases the microhardness of glazed surfaces more than the natural mineral equivalent.

Author Biographies

Олеся Василівна Шулипа, National University Lviv Polytechnic St. Bandera, 12, Lviv, Ukraine, 79013

graduate student

Department of Chemical Technology of Silicates

Ярослав Іванович Вахула, National University Lviv Polytechnic St. Bandera, 12, Lviv, Ukraine, 79013

Doctor of Engineering, Professor

Department of Chemical Technology of Silicates

Зенон Іванович Боровець, National University Lviv Polytechnic St. Bandera, 12, Lviv, Ukraine, 79013

PhD, associate professor

Department of Chemical Technology of Silicates

Мирон Григорович Пона, National University Lviv Polytechnic St. Bandera, 12, Lviv, Ukraine, 79013

PhD, associate professor

Department of Chemical Technology of Silicates

Іван Володимирович Солоха, National University Lviv Polytechnic St. Bandera, 12, Lviv, Ukraine, 79013

PhD, associate professor

Department of Chemical Technology of Silicates

References

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Published

2015-06-24

How to Cite

Шулипа, О. В., Вахула, Я. І., Боровець, З. І., Пона, М. Г., & Солоха, І. В. (2015). Low-temperature roasted wollastonite in designingeasily meltable glazes of an increased hardness. Eastern-European Journal of Enterprise Technologies, 3(11(75), 14–18. https://doi.org/10.15587/1729-4061.2015.43446

Issue

Section

Materials Science