Influence of Sintering Process on the Mechanical Properties of Dental Zirconia Ceramics

Abstract

Densification and mechanical properties of dental zirconia ceramics were evaluated by different sintering methods. Y-TZP zirconia block was used in this study. Sintering were performed in electric heating furnace and microwave sintering furnace, and then experimented and analyzed on a change in densification according to the sintering time, a change in densification according to thickness, flexural strength and micro-structure of zirconia specimens. Microwave sintering was very effective in considerable mechanical properties such as flexural strength and bulk density was drastically increased than conventional electric heating method. It is also shown that microwave sintering was faster and more economical than common method to be present in qualities which equal or exceed. It will be important to seek the accurate sintering condition of dental zirconia by microwave sintering method and the continuous research is necessary for the study of relationship between sintering methods and mechanical properties.

Study on Sintered Ceramic Process Based on Thermal Analysis

“…The body through a series of physical and chemical changes in this process (Wang B et al, 2013) (Sivakumar S et al, 2014), formed the phase composition and microstructure, and obtained the desired performance index. The firing process affects the microstructure, grain size and distribution of pore size and volume fraction of grain boundary (Park W U et al, 2013), thus affecting the performance of ceramic materials. Therefore, it is benefit to understand and analyze the physical and chemical changes during sintered ce-ramics process temperature for making reasonable ceramic sintering system.…”