Glasses for laser joining of zirconia ceramics

Laser joining of ZrO2 ceramics using glasses and glass ceramics as sealing components requires optimized systems. The ternary systems SiO2–BaO–B2O3 and BaO–SrO–SiO2 were selected as a basis for development of suitable glass compositions for the laser joining process. Additives such as CaO, TiO2, Al2...

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Vydáno v:Journal of the European Ceramic Society Ročník 34; číslo 3; s. 765 - 772
Hlavní autoři: Börner, Floriana-Dana, Lippmann, Wolfgang, Hurtado, Antonio, Schön, Bastian
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier Ltd 01.03.2014
Témata:
Ceramics
Crystallization
Glass
Glass sealant
Joining
Laser joining
Lasers
Mechanical strength
Thermal expansion
Titanium dioxide
Viscosity
Zirconium dioxide
ZrO2 ceramics
Thermal expansion
ZrO2 ceramics
Mechanical strength
Laser joining
Glass sealant
ISSN:0955-2219, 1873-619X
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Shrnutí:Laser joining of ZrO2 ceramics using glasses and glass ceramics as sealing components requires optimized systems. The ternary systems SiO2–BaO–B2O3 and BaO–SrO–SiO2 were selected as a basis for development of suitable glass compositions for the laser joining process. Additives such as CaO, TiO2, Al2O3, and MgO were used to control the crystallization processes and hence the thermal expansion coefficients during glass synthesis. The glass viscosity, the strength of the ceramic-glass-ceramic joint, and the joint tightness are other important glass properties which were optimized for the laser process. For glass G018-345, this yielded strengths of up to 225MPa (Weibull modulus of m=8.6) and He leak rates of up to 4.3×10−5mbar ls−1. Because of the varying viscosities obtained, the optimized glass systems could be used selectively in a temperature range of 700–900°C.
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ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2013.09.019