The effect of porosity and glassy phase amount of porcelain tiles on ultrasonic velocity

Gultekin E. E., Ozturk Z. B., KURAMA S.

Journal of the Australian Ceramic Society, vol.51, no.1, pp.120-124, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 51 Issue: 1
  • Publication Date: 2015
  • Journal Name: Journal of the Australian Ceramic Society
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.120-124
  • Keywords: Ultrasonic, non-destructive testing, ceramic tile, porosity
  • Anadolu University Affiliated: Yes

Abstract

© Copyright 2015, The Australian Ceramic Society.Non-destructive testing (NDT) has been playing critical role in processing, testing and structural evaluation of materials. Ultrasonic testing is a widely used characterization method in non-destructive testing (NDT). The aim of this study is to establish a better understanding how porosity and glassy phase amount of porcelain tiles change the ultrasonic velocity. In this study, the ultrasonic velocity of the tiles was measured by pulse-echo method, A-scan. To investigate the crystalline and glassy phases formed during heat-treatment, tiles were analyzed with X-ray diffractometer (XRD). Additionally, total porosity percentage of tiles was measured with the pycnometer and mean pore size of tiles was analyzed by mercury intrusion porosimeter. It was found that 2% variation of total porosity changed ultrasonic velocity from 4837 m/s to 5055 m/s. When total porosity and mean pore sizes were close to each other, the ultrasonic velocity increased due to the increment of glassy phase.