Effect of MnO, CaO and nitrogen on the alkaline durability of soda-lime silicate glasses
- 45 Downloads
MnO containing soda-lime silicate glasses were vitrified and nitrogen was introduced into them. The prepared glasses were subject to density measurement and alkaline durability tests. MnO addition caused poorer alkaline durability in 2N NaOH solution at 82°C. Needle-like precipitations were observed on the MnO containing glass surface after 96 h durability tests. Glass components were found to dissolve selectively in the alkaline solution in the order SiO2 > CaO > MnO. The density of the obtained glasses increased linearly with increasing amount of nitrogen content in the glasses. A considerable improvement in alkaline durability of the glasses by nitrogen addition was observed, and its effect was larger for the MnO-free glasses.
KeywordsNitrogen Polymer Precipitation SiO2 Silicate
Unable to display preview. Download preview PDF.
- 1.K. L. Biryukovitch and Y. L. Biryukovitch, Stroit Materialy 2 (1961) 18.Google Scholar
- 2.A. J. Majumdar and J. F. Ryder, Glass Technol. 9 (1968) 78.Google Scholar
- 3.J. Jones, Glass Ind. 6 (1977) 26.Google Scholar
- 5.Y. Suzuki, Seramikkusu 11 (1976) 604.Google Scholar
- 8.K. Inoue, O. Matsuda, M. Daimon and R. Kondou, Yogyokyokaishi 88 (1980) 88.Google Scholar
- 9.M. Nogami and Y. Moriya, ibid. 85 (1977) 448.Google Scholar
- 11.K. Sakai, Seramikkusu 23 (1988) 214.Google Scholar
- 15.A. Makishima, M. Mitomo, H. Tanaka, N. Ii and M. Tsutsumi, in “Proceedings of the 56th Annual Meeting of the Ceramic Society of Japan” (The Ceramic Society of Japan, Tokyo, 1981) p. 47.Google Scholar
- 16.S. Sakka, K. Komori, H. Kozuka, T. Kokubo and N. Sugimoto, Rivista della Staz. Sper. Vetro 6 (1986) 75.Google Scholar
- 20.H. Ohta and Y. Suzuki, Am. Ceram. Soc. 57 (1978) 602.Google Scholar