[T22] Other PM Materials

[16P-T22-01] Preparation and Microstructure of Bluish Glass

*S. Murase¹, A. Kaminaga², H. Uenishi³, R. Maki¹, T. Fujii⁴, M. Takano⁵, Y. Kusano¹ (1.Okayama University of Science, Japan, 2.Glass IMECA, Japan, 3.Shigaraki Ceramic Research Institute, Japan, 4.Okayama University, Japan, 5.Research Institute for Production Development, Japan)

Keywords:Bluish glass, Microstructure, Iron ion, Mössbauer spectroscopy, Spectrophotometric measurement

Bluish glass was successfully prepared by mixing oxides and carbon as a reductant into the starting materials, whereas the addition of only alpha-Fe2O3 into the glass raw materials provided greenish glass. The chemical state of the iron ions in the glass was likely modified from Fe3+ to Fe2+ by the reducing atmosphere caused by carbon during the heating process. Mössbauer spectra and spectrophotometric measurements indicated that the bluish glass contained a high proportion of Fe2+ (67.4%) and mainly absorbed visible light with wavelengths longer than 500 nm.