Light scattering by residual pores in transparent zirconia ceramics

Autor:	Koji Tsukuma, Isao Yamashita
Rok vydání:	2011
Předmět:	Pore size Materials science business.industry Mie scattering General Chemistry Condensed Matter Physics Residual Light scattering Optics visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Cubic zirconia Ceramic Composite material business Porosity Refractive index
Zdroj:	Journal of the Ceramic Society of Japan. 119:133-135
ISSN:	1348-6535 1882-0743
DOI:	10.2109/jcersj2.119.133
Popis:	We studied the effects of residual pores on the transparency of cubic zirconia ceramics by applying Mie scattering theory. The optical haze value H, defined as the diffuse transmission divided by the total forward transmission, was calculated as a function of the pore size (rpore) and the porosity of residual pores (Vpore) with sample thickness (t) = 1 mm. Even a small amount of pores critically affect the transparency; Vpore < 5 ppm is required to maintain H value within 1%, when rpore = 0.05 µm is assumed. The theoretical study also revealed that the acceptable amount of residual pores for H = 1% gradually degreases with an increase in the refractive index of the materials.
Databáze:	OpenAIRE
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