A new method to determine open porosity and permeability constants of open-pore sintered glasses by photoacoustic technique

Cerâmica

M. T. Yasuda²  W. L. B. Melo¹ 

[1] ,Universidade Federal de S. Carlos Departamento de Engenharia de Materiais S. Carlos SP

关键词: open porous;    permeability;    glasses;    photoacoustic;    porosidade aberta;    permeabilidade;    vidros;    fotoacústica;   

DOI  :  10.1590/S0366-69132005000300013

来源: SciELO

【 摘 要 】

The Photoacoustic (PA) technique was used to investigate the structural properties (e.g. open porosity and permeability) of open-pore sintered glasses. This work demonstrates that the photoacoustic signal of open-pore sintered glasses, which are produced with different grain sizes and several degrees of open porosity, is sensitive to the morphology of the open-pore samples. The results obtained by the PA technique were related to results obtained by the Pressure Decay technique, and an excellent correlation was obtained. This demonstrates that PA technique, which is non-intrusive and non-destructive, is promising for application in analysis of porous ceramic structures, even if the sample is semi-transparent.

【 授权许可】

CC BY-NC   
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