Field strength effect on structure, hardness, and crack resistance in single modifier aluminoborosilicate glasses
Field strength effect on structure, hardness, and crack resistance in single modifier aluminoborosilicate glasses
复制标题
场强对单改性铝硼硅酸盐玻璃的结构、硬度和抗裂性的影响
DOI：
10.1111/jace.18796
复制
发表时间：
2022
影响因子：
3.9
通讯作者：
Mauro, John C.
中科院分区：
文献类型：
--
作者：
Fry, Aubrey L.;George, Christy;Slagle, Ian;Hawbaker, Harry;Feller, Steve;Kim, Seong H.;Mauro, John C.
虽然在氧化物玻璃中已经广泛地研究了玻璃形成剂和改性剂之间的相互作用，例如，连接性和电荷分布，但是特定改性剂种类对铝硼硅酸盐（ABS）玻璃的机械性能的影响还没有很好地理解。这项工作比较了六个ABS玻璃，其中每一个包含不同的网络改性剂（NWM）与不同的场强（FS）的压痕性能。设计了三种碱金属和三种碱土金属ABS玻璃，其具有低NWM含量和[NWM]取代[Al2O3]，以测试低浓度下的改性剂FS效果并使三配位硼最大化。已经发现，在这些ABS体系中，硬度和抗裂性都随着FS的增加而增加，这在历史报道的背景下是令人惊讶的。使用11B，27Al和29Si固态核磁共振，这项工作提供了电荷分布如何作为NWM物种的函数而不同的证据，以及这与观察到的压痕行为的关系。
Although the interactions among glass formers and modifiers, for example, connectivity and charge distribution, have been studied extensively in oxide glasses, the impact of a particular modifier species on the mechanical performance of aluminoborosilicate (ABS) glasses is not well understood. This work compares the indentation properties of six ABS glasses, each of which contains a different network modifier (NWM) with varying field strength (FS). Three alkali and three alkaline earth ABS glasses were designed with low NWM content and [NWM] ≈ [Al2O3], to test the modifier FS effect at low concentrations and to maximize three‐coordinated boron. It has been found that both hardness and crack resistance increase with increasing FS in these ABS systems, which is surprising in the context of historical reports. Using11B,27Al, and29Si solid‐state nuclear magnetic resonance, this work provides evidence of how charge distributions differ as a function of NWM species, and how this relates to the observed indentation behaviors.