Scholarlink

<p>This study investigates the influence of varying TiO<sub>2</sub> (0–15 wt.%) and ZrO<sub>2</sub> (15–0 wt.%) additions on the microstructure, densification, and mechanical properties of dental porcelain composites fabricated from local Algerian raw materials. The samples were produced by cold compaction and sintered at temperatures ranging from 1100°C to 1250°C. Advanced characterization techniques—X-ray diffraction, Fourier-transform infrared spectroscopy, and scanning electron microscopy—were employed to analyze phase evolution and microstructural morphology. The results indicated that increasing TiO<sub>2</sub> content while decreasing ZrO<sub>2</sub> enhanced both densification and mechanical strength. The optimal composition—15 wt.% TiO<sub>2</sub> sintered at 1200°C—achieved the highest bending strength (177&#xa0;MPa) and Martens hardness (2931&#xa0;MPa). TiO<sub>2</sub> functioned as a fluxing agent, promoting grain cohesion, whereas excessive ZrO<sub>2</sub> content led to the formation of structural defects. These findings highlight the potential of optimized formulations to meet the requirements for high-performance, biocompatible dental ceramics and support the development of sustainable porcelain using abundant natural resources.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of TiO2 and ZrO2 Additions on Sintering and Mechanical Properties of Dental Porcelain Material

  • 期刊论文

  • 发表日期：

    2025年10月9日

查看全文
  • Fayçal Aouadja,
  • Seyra Toprak,
  • Mustafa M. Demir,
  • Mohamed Redda Boudchicha

摘要

This study investigates the influence of varying TiO2 (0–15 wt.%) and ZrO2 (15–0 wt.%) additions on the microstructure, densification, and mechanical properties of dental porcelain composites fabricated from local Algerian raw materials. The samples were produced by cold compaction and sintered at temperatures ranging from 1100°C to 1250°C. Advanced characterization techniques—X-ray diffraction, Fourier-transform infrared spectroscopy, and scanning electron microscopy—were employed to analyze phase evolution and microstructural morphology. The results indicated that increasing TiO2 content while decreasing ZrO2 enhanced both densification and mechanical strength. The optimal composition—15 wt.% TiO2 sintered at 1200°C—achieved the highest bending strength (177 MPa) and Martens hardness (2931 MPa). TiO2 functioned as a fluxing agent, promoting grain cohesion, whereas excessive ZrO2 content led to the formation of structural defects. These findings highlight the potential of optimized formulations to meet the requirements for high-performance, biocompatible dental ceramics and support the development of sustainable porcelain using abundant natural resources.