II 2013

Hydrothermal synthesis of nano zinc oxide with selected precipitating substance application
The aim of this study was to investigate the effect of the substance precipitating on the morphology, particle size nano zinc oxide derived hydrothermal method in a microwave reactor. Was used as the precipitating substances: potassium hydroxide, urea, ammonia and triethanolamine (TEA). Conducted experiments have shown a significant effect on the properties of the resultant product is the selection of suitable precipitants. However, there were different grain shape, size and surface area. The results presented in this article is a continuation of work on the selection of the optimal reactor for hydrothermal synthesis of nano zinc oxide. Posted by results presented in his doctoral thesis.
Tomasz Strachowski Ph.D Eng.

Gas bubbles in the glass
The appearance of gas bubbles in the glass is a permanent phenomenon accompanying the melting of the glass. The removal of gas bubbles (clarification of the glass) and preventing their formation is one of the most difficult stages of the production of technical and commercial glass. The paper includes examples of chemical composition of gas bubbles in the glass occurring during the breakdown in the national factory, which are representative of the results from the expertise developed for glass in 1999–2005 and performed in the Department of Glass Technology Institute of Ceramics and Building Materials in Krakow.
Anna Kuśmierz M.Sc. Eng.

Immobilization of solid waste materials sintered
The study included waste materials in the form of slag, cullet and fiberglass. Done with a mixture of waste in the appropriate proportions set of raw materials, and subjected to a heat treatment, a series of tests. An analysis of microstructural, determined the apparent density, open porosity and water absorption, obtained by sintering. Using the scratch test method tests were performed scratch resistance diamond cone. The research found that the increase in cullet content in the samples resulted in a large increase in the apparent density at the expense
Anna Zawada Ph.D. Eng., Ilona Łęgowik , Monika Strzelecka

Ceramic materials for dental prosthetics – optical and microstructural properties of zirconia ceramics

The aim of the work was to select the method of determine the value of translucency, a comparison of the optical characteristics of the selected zirconia materials, as well as an attempt to determine the relationships between the translucency and selected physical properties and microstructure characteristics of zirconia materials. The samples of commercial zirconia materials used in prosthetic dentistry were prepared and studied their basic physical and optical properties (apparent density, color, translucency, whiteness). Microscopic examination of pores and grain morphology was also performed, as well as translucency dependence on the physical properties and structure of zirconia ceramics was evaluated. In summary, characteristics in terms of the optical properties of the test materials were achieved and properties that, based on the research, had the greatest impact on translucency of materials were indicated.

Zbigniew Jaegermann Ph.D. Eng.