[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)

キーワード：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.