Optical properties of traditional ceramic with different sintering temperatures in terahertz range

Miao, Xin Y.; Yang, Qing N.; Feng, Cheng; Bao, Ri M.; Zhao, Kun; Xiao, Lizhi

doi:10.1117/12.2209580

Cited by 1 publication

(1 citation statement)

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“…A system that allows for real-time measurement of the firing process is desired to maintain ceramic quality and establish a more efficient manufacturing process. Recently, Miao et al examined the THz-wave characteristics of Chinese pottery bodies fired at different sintering temperatures and reported the possibility of firing-process management for pottery using THz waves [15]. However, detailed relationships between THz-wave characteristics and the sintering properties such as the water absorption rate, bulk density, and linear shrinkage of the pottery bodies have not been reported.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the sintering properties of pottery bodies using terahertz time-domain spectroscopy

Niijima

Shoyama

Murakami

et al. 2018

Journal of Asian Ceramic Societies

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Terahertz (THz) time-domain spectroscopy was applied to evaluate the sintering properties of pottery bodies. The transmittance, absorption coefficient, and refractive index of pottery bodies fired at various temperatures were evaluated over the THz frequency range of 0.3-1.3 THz, and the relationships between these properties and their sintering properties were examined. The absorption coefficient and refractive index at 0.5 THz were sensitive under sintering conditions. In particular, the sintering-temperature dependence of the refractive index in the THz region showed a similar trend to that shown by the bulk density. THz-wave two-dimensional imaging was used to visualize inhomogeneities inside the bodies. Our study demonstrated that THz-wave analysis can be used to manage the firing process of pottery and ceramics and to conduct nondestructive testing of products.

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Section: Introductionmentioning

confidence: 99%