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首页> 外文期刊>European Journal of Glass Science and Technology, PartB. Physics and Chemistry of Glasses >Mechanical properties of optically transparent glass-ceramics containing lithium mica nanocrystals
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Mechanical properties of optically transparent glass-ceramics containing lithium mica nanocrystals

机译：含锂云母纳米晶体的光学透明玻璃陶瓷的机械性能

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摘要

Optically transparent glass-ceramics that contain lithium mica nanocrystals of <30 nm size were fabricated and their mechanical properties were examined as a function of heat treatment temperature. The fracture toughness (K_(lc)) increased with increases in heat treatment temperature and the crystallized mica; for example, the value of K_(lc) was 0-68 MPam~(1/2) for the glass and 1·37 MPam~(1/2) for the sample heat treated at 600°C. The Vickers hardness (H_v) increased from 3·39 to 3·97 GPa and the bend strength (σ) increased from 81·8 to 169·4 MPa, but both decreased with further increases of heat treatment temperature. It is shown that the mechanical properties of mica glass are significantly improved by nanocrystallization.
机译：制造了包含尺寸小于30 nm的锂云母纳米晶体的光学透明玻璃陶瓷，并检查了其机械性能与热处理温度的关系。断裂韧性（K_（lc））随着热处理温度和结晶云母的增加而增加;例如，对于玻璃，K_（lc）的值为0-68 MPam〜（1/2），对于在600°C热处理的样品，K_（lc）值为1·37 MPam〜（1/2）。维氏硬度（H_v）从3·39 GPa增加到3·97 GPa，弯曲强度（σ）从81·8 MPa增加到169·4 MPa，但是随着热处理温度的进一步升高，两者均降低。结果表明，通过纳米晶化，云母玻璃的机械性能得到了显着改善。

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