SiAlON glasses: Effects of nitrogen on structure and properties
SiAlON glasses: Effects of nitrogen on structure and properties
复制标题
SiAlON 玻璃：氮对结构和性能的影响
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
S. Hampshire
中科院分区：
文献类型：
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作者：
M. Pomeroy;S. Hampshire
Sialon玻璃是有效的铝硅酸盐，其含有改性阳离子（Mg、Ca、Y和镧系元素），其中氮取代玻璃网络中的氧。它们存在于三相点结和氮化硅基陶瓷中的晶间膜中。本文综述了M-Si-Al-O-N系玻璃的研究进展，并概述了组成对玻璃结构和性能的影响。作为氮取代氧，增加观察到的玻璃化转变（Tg）和流变软化（Tds）的温度，粘度，弹性模量和显微硬度和降低可以看出，在热膨胀系数作为结果的玻璃网络的额外交联。性能和氮含量之间的线性关系的梯度对于宽范围的不同赛隆玻璃组合物和改性剂类型是相似的，因为每个当量%氮取代将相同数量的额外交联引入玻璃网络中。
Sialon glasses are effectively alumino-silicates containing modifying cations (Mg, Ca, Y and Lanthanides) in which nitrogen substitutes for oxygen in the glass network. They are found at triple point junctions and as intergranular films in silicon nitride based ceramics. This paper provides an overview of M-Si-Al-O-N glasses and outlines the effects of composition on structure and properties. As nitrogen substitutes for oxygen, increases are observed in glass transition (Tg) and dilatometric softening (T ds ) temperatures, viscosities, elastic moduli and microhardness and decreases can be seen in coefficient of thermal expansion as a result of extra crosslinking of the glass network. The gradients of the linear relationships between properties and nitrogen content are similar for a wide range of different sialon glass compositions and modifier types since each eq.% nitrogen substitution introduces the same number of additional crosslinks into the glass network.