炉渣微晶玻璃晶化过程的 ESR 研究

ESR Study on Crystallization Process of Slag Glass-Ceramics

研究了若干炉渣微晶玻璃的室温 ESR 谱。发现所有炉渣玻璃的 ESR 谱都由一个 g=4.28的吸收峰和一个 g=2.00的六线超精细结构组成,并认为前者是由 Fe^(3+)引起的,后者则是 Mn^(2+)的贡献。经成核和晶化处理后,Fe^(3+)的 g=4.28信号明显减弱,反之 Mn^(2+)的 g=2.00信号则成数量级增强,且超精细线宽变窄,超精细结构变得十分清晰。上述现象可解释为 Fe^(3+)和 Mn^(2+)进入晶格结构,从而配位离子的有序度增加。因此从炉渣玻璃的 ESR 谱可反映出玻璃的晶化程度。

The ESR spectra of some slag glass-ceramics measured at room temperature havebeen studied.It is found that all ESR spectra of slag glasses consist of a g=4.28absorption and a g=200 six-line superfine structure.We believe that the former isdue to the action of Fe^(3+) ions and the latter—Mn^(2+).After nucleation and crystalli-zation treatment,the g=4.28 signal of Fe^(3+) decreases obviously,contrarily the g=2.00 signal of Mn^(2+) increases by several orders and the linewidth due to superfinestructure gets narrower,so the superfine structure becomes clearer Above mentionedphenomena can be interpreted on the basis of Fe^(3+) and Mn^(2+) ions incorporating intocrystal lattice structure and then making the structure more in regular order.Ther-efore the crystallization extent can be shown by ESR spectra of the slag glasses.