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Features of laser drilling of porous aluminosilicate ceramics

Published online by Cambridge University Press:  26 November 2020

P.A. Márquez Aguilar ,
M. Vlasova ,
E. Moreno Bernal ,
M. Kakazey ,
R. Guardian Tapia  and
A. Castro Hernández
P.A. Márquez Aguilar*
Affiliation:
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos (CIICAp-UAEMor), Av. Universidad 1001, Cuernavaca, Mexico
M. Vlasova*
Affiliation:
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos (CIICAp-UAEMor), Av. Universidad 1001, Cuernavaca, Mexico
E. Moreno Bernal
Affiliation:
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos (CIICAp-UAEMor), Av. Universidad 1001, Cuernavaca, Mexico
M. Kakazey
Affiliation:
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos (CIICAp-UAEMor), Av. Universidad 1001, Cuernavaca, Mexico
R. Guardian Tapia
Affiliation:
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos (CIICAp-UAEMor), Av. Universidad 1001, Cuernavaca, Mexico
A. Castro Hernández
Affiliation:
Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos (CIICAp-UAEMor), Av. Universidad 1001, Cuernavaca, Mexico
*
*[email protected]
*[email protected]
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Abstract

Studies have shown that local laser heating/“drilling” of composite large-porous ceramics consisting of aluminosilicates and glass phase is based on melting and ablation processes that lead to the formation of holes in a porous specimen. The interaction of the components of the composite in the high-temperature heating zone is accompanied by the formation of glass-phase melt of new composition. The advance of the melt deep into the sample along channel-like pores of the main ceramic material depends on the viscosity of the melt (i.e., the irradiation mode) and the cooling rate of the melt (i.e., the thermo-physical properties of the ceramics and glass phase). The development of gas-dynamic impact in the laser heating zone leads not only to the ejection of a part of the melt from the channel, but also to the compaction of the ceramics adjacent to the walls of the vitrified channel. These effects depend heavily on the ceramic-to-glass phase ratio and the porosity of the initial ceramic. It has been established that “laser perforation” of highly porous aluminosilicate ceramics leads to the hardening of the coarse-porous ceramics due to the formation of holes with strong walls, consisting of layers of the glass phase and compacted ceramics in the sample.

Type
Articles
Information
MRS Advances , Volume 5 , Issue 59-60: International Materials Research Congress XXIX , 2020 , pp. 3045 - 3054
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Copyright
Copyright © The Author(s), 2020, published on behalf of Materials Research Society by Cambridge University Press

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