摘要
本文研究了 Mg-Al-Si-O-N 系统玻璃中 Si_3N_4的含量对玻璃某些物理性能的影响,并详细讨论了氮在玻璃中的键合状态及其与玻璃某些物理性能之间的关系。根据玻璃密度的计算值与实测值的比较,以及 N(1s)能谱分析的结果证明,在低含氮区,玻璃中的氮主要以桥氮的形式存在,每个氮原子都能与三个硅原子相键合,使玻璃的结构网络更加紧密、交连。然而,随着氮含量的增加,非桥氮开始出现,使玻璃结构松驰,网络的紧密程度下降。结果导致玻璃的各种性能与氮含量之间表现出明显的非线性关系。
The effect of nitrogen content on the properties of Mg-Al-Si-O-N oxynitrideglass was investigated.The bonding state of nitrogen atoms in the glass was discus-sed in order to explain the change of the physical properties of the glass with nit-rogen content.The results of N(1s)XPS spectra and the contrast between the measuredand calculated densities indicate that a bridging nitrogen bonded with three siliconatoms is formed in the oxynitride glass for the small amount of nitrogen added,which produces a more highly cross-linked and more compact glass network.Howe-ver,when the amount of nitrogen becomes larger,the non-bridging nitrogens beganto appear and rupture the glass network.This structural change leads to the nonli-near dependence of physical properties on the amount of nitrogens added in theglass.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1991年第4期482-486,共5页
Journal of Inorganic Materials
关键词
镁
铝
硅
氧
氮
玻璃
Mg-Al-Si-O-N glass
Glass properies
Glass structure Bond character of nitrogen
