The Influence of Metal Diffusion and Interfacial Reactions on the Crystallization Behaviour of Glasses Employed in the Manufacture of Glass-Ceramic-to-Metal Seals

Ian W. Donald; Brian L. Metcalfe; Lee A. Gerrard

doi:10.4028/www.scientific.net/AMR.39-40.369

Paper Titles

Glass Surface Analysis by an Optimized Sequential Chemical Etching Technique Using the Corrosive Agent HF/HNO₃
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Kinetics of E-glass Fibres Leaching in Borate Solution and Distilled Water
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Ageing of Clay-Based Materials
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Chemical Durability of Glass Thermal Insulation Fibers in Borate and Phosphate Water Solutions
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The Influence of Metal Diffusion and Interfacial Reactions on the Crystallization Behaviour of Glasses Employed in the Manufacture of Glass-Ceramic-to-Metal Seals
p.369

Effects of Dispersed Al₂O₃ Particles on Sintering of LTCC
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β-Spodumene Glass-Ceramic with Anomalous Low Thermal Expansion
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Electron Microscopic Investigations of Electrochemically Induced Mullite Crystallization in a Glassy Matrix
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Crystallization of Glasses in the MoO₃-Bi₂O₃ System
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 39-40The Influence of Metal Diffusion and Interfacial...

The Influence of Metal Diffusion and Interfacial Reactions on the Crystallization Behaviour of Glasses Employed in the Manufacture of Glass-Ceramic-to-Metal Seals

Abstract:

One of the major attributes of glass-ceramics is an ability to tailor their thermal expansion characteristics and this makes them ideal candidates for sealing to a wide variety of metals and alloys; however, during the sealing process, reaction of diffusing metal species with glass constituents may occur, and this can lead to the formation of undesirable phases within the interfacial region. In addition, diffusion of metal species into the bulk glass away from the interface may affect the overall crystallization kinetics and can result in the formation of unwanted crystalline phases which may be detrimental to the lifetime behaviour of a seal component. This contribution outlines and discusses the factors affecting the crystallization behaviour of glasses employed in seal manufacture and describe methods by which undesirable reactions can be alleviated or minimized through effective control of the process parameters and starting glass composition.