Laser Drilling of Porous Aluminum Silicate Ceramics

被引：0
作者：
Ya. S. Fironov
I. V. Mel’nikov
E. R. Nadezhdin
V. N. Tokarev
机构：
[1] MIPT,School of Radio Engineering and Computer Technology
[2] MIPT,Scientific and Technological Center of Marine Geophysics
[3] Russian Academy of Sciences (IGP RAS),A. M. Prokhorov Institute of General Physics
来源：
Glass and Ceramics | 2021年 / 78卷
关键词：
porous glass ceramics; laser drilling; melting; mass transfer; heat transfer;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The features of laser drilling of highly porous composite ceramics consisting of aluminosilicate, glass, and a small addition of polystyrene (EPS) were studied experimentally. It was found that the formation of a liquid phase can contribute to the strengthening of ceramics. A list of factors determining the dynamics of hole formation is proposed. These include not only heating, melting, ablation, and ejection, previously known for metals and dense ceramics, but also a number of others: boiling-up of the mixture component with the lowest temperature of thermal decomposition and its departure from the affected zone; melt of less volatile components; compaction of ceramic adjoining the walls; glass transition of the liquid phase on cooling after irradiation. These effects depend on the density of the composite as well as on the viscosity of the liquefied material.
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页码：23 / 29
页数：6
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