Nondestructive inspection of sinterability of ceramic tiles by terahertz spectroscopy

The sinterability of ceramic tiles was evaluated using terahertz (THz) time‐domain spectroscopy. The transmittance, complex refractive index, and reflectance of the ceramic tiles fired at various temperatures were measured in frequency range of 0.3‐1.2 THz. The relation between these THz properties...

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Bibliographic Details
Published in:Electronics and communications in Japan 2019-06, Vol.102 (6), p.19-24
Main Authors: Niijima, Seiji, Shoyama, Masashi, Kawase, Kodo
Format: Article
Language:English
Subjects:
Bulk density
ceramic tile
Ceramics
Frequency ranges
Inspection
Nondestructive testing
Rangefinding
Reflectance
refractive index
Refractivity
Sinterability
Spectrum analysis
terahertz time‐domain spectroscopy
Tiles
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Summary:The sinterability of ceramic tiles was evaluated using terahertz (THz) time‐domain spectroscopy. The transmittance, complex refractive index, and reflectance of the ceramic tiles fired at various temperatures were measured in frequency range of 0.3‐1.2 THz. The relation between these THz properties and their sinterability were examined. The firing‐temperature dependences of the refractive index and reflectance at 0.5 THz showed a similar behavior as that shown by the bulk density. These results show that the THz spectroscopy can be applied to nondestructive inspection of the sinterability of ceramic tiles.
ISSN:1942-9533
1942-9541
DOI:10.1002/ecj.12169