Effect of micro/nano TiO2 addition on the densification behavior and mechanical properties of multifunctional resistant porcelains. Issue 12 (15th June 2021)

• Record Type: Journal Article
• Authors: Esmaili, Maryam; Nilforoushan, Mohammad Reza; Tayebi, Morteza; Aghaie, Ermia
• Is Part Of: Ceramics international. Volume 47:Issue 12(2021)
• Page Start: 17435
• Page End: 17444
• Publication Date: 2021-06-15
• Subjects: Multifunctional resistant porcelain -- Sintering -- TiO2 -- Flexural strength; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.03.060
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The current study aimed at evaluating the effect of sintering temperature and TiO2 content on the density and mechanical properties of novel multifunctional resistant porcelains. In this work, a new selective mixture of available natural ceramic materials of kaolin (30 wt%), feldspar (45 wt%), and quartz (25 wt%) was used. Moreover, 3, 5, and 8 wt% TiO2 nano and microparticles were added to the mixture. The optimum sintering temperature was found to be 1150 °C, which resulted in the highest bulk density and the lowest apparent porosity of porcelain samples. The phase characterization of the prepared porcelains was carried out using the X-ray diffraction (XRD) analysis and Fourier transform infrared spectroscopy (FTIR). The XRD results of the analysis demonstrated that the samples containing 5 wt% TiO2 had the highest peak intensity of the mullite phase. In addition, the FTIR spectra confirmed the presence of crystalline mullite phase. The SEM micrographs revealed that the samples containing 5 wt% micro/nano TiO2 had the highest densification, containing the needle-like mullite phase.