X-ray microtomography reconstruction - High temperature transient diffusion - Material: High alumina-silicate refractory doped with chromium oxide

Published: 17 February 2018| Version 1 | DOI: 10.17632/n5r8spjn22.1
Carlos Eduardo Guedes Catunda,


Diffusion tests were performed with solid diffusants of iron oxides in porous silico-aluminous refractory castables in high temperature conditions. A non-destructive X-ray computer microtomography technique with digital 3D reconstruction (3DCT) was used for spatial monitoring the diffusion into the media. A particle tracking (PT) method was applied to predict diffusion through porous materials and to quantify its diffusive properties based on 3D images over time. The influence of temperature and dopants were examined ranging from 1100°C to 1300°C, at exposure time of 100h. High alumina-silicate refractory materials doped with chromium oxide were used: M2 (doped with chromium oxide). The high-density components (HDC) and Pores were extracted in the images from the cross-sections of the microtomography process and converted into monochromatic 8-bit image to quantify the concentration of the diffusants and pores.


Steps to reproduce

For the control and capture of the 3DCT images was used the software SCOUT-AND-SCAN , version 10.7.3245 (ZEISS XRADIA). For the reconstruction of the 3DCT images was used the software XMRECONSTRUCTOR, version 10.7.3245 (ZEISS XRADIA). For the digital image processing and analysis, was used the ORS software, version (OBJECT RESEARCH SYSTEMS INC).


Pontificia Universidade Catolica do Rio de Janeiro Departamento de Engenharia Quimica e de Materiais


Diffusion, X-Ray Microtomography, Refractory Ceramics