3 0 0 0 OA ソーダライムガラスにおける不純物の紫外線透過能に対する影響
- 著者
- 藤田 浩示 高原 良博
- 出版者
- 公益社団法人 日本金属学会
- 雑誌
- 日本金属学会誌 (ISSN:00214876)
- 巻号頁・発行日
- vol.71, no.12, pp.1071-1074, 2007 (Released:2007-12-01)
- 参考文献数
- 6
Recently, research and development using ultraviolet rays is being conducted in the bioscience field. In such R&D, expensive quartz glass is most often used as the ultraviolet transmitting material. The authors have been studying the use of inexpensive soda-lime glass as an alternative to quartz. In this study the authors investigated the effects of iron oxide and titanium oxide, which are found in raw materials, and crucible materials on the ultraviolet transmission properties of soda-lime glass. It was found that by reducing the amount of Fe2O3 and TiO2 contained in raw materials as impurities, it was possible for soda-lime glass to achieve high ultraviolet transmissivity. Reducing the amount of iron oxide turned out to be an especially effective way to improve ultraviolet transmissivity.
1 0 0 0 OA ソーダライムガラスの紫外線透過性に及ぼす塩素添加の効果
- 著者
- 藤田 浩示 高原 良博
- 出版者
- 公益社団法人 日本金属学会
- 雑誌
- 日本金属学会誌 (ISSN:00214876)
- 巻号頁・発行日
- vol.71, no.11, pp.1057-1060, 2007 (Released:2007-11-02)
- 参考文献数
- 9
We have studied the effect of the chlorine addition on the ultraviolet transmission property of soda-lime glasses to develop the ultraviolet penetration glass with soda-lime compositions. At first, a molecular-dynamics calculation is carried out to investigate how the addition of chlorine has influence on the non-bridged oxygen which causes the absorption of ultraviolet in the soda-lime glass. It is shown from the calculation that the chlorine addition reduces the amount of the non-bridged oxygen. Based on the result, we fabricate the soda-lime glasses containing chlorine by using a platinum crucible, and then measure the transmittance of ultraviolet at 260 nm wavelength. Apparent improvement of ultraviolet transmittance of the soda-lime glasses is confirmed from the measurements. As a result, improvement of ultraviolet transmittance is below 10%, so enough improvement of ultraviolet transmittance is not available by addition of chlorine.