MICROSCOPIC OBSERVATIONS UNDER THE EFFECT OF SURFACE PREPARATION PARAMETERS OF NI-CR-MO ALLOY IN METAL-CERAMIC CONNECTION STABILITY TERMS

1 KLIMECKA-TATAR Dorota
Institution:
1 Czestochowa University of Technology, Institute of Production Engineering, Czestochowa, Poland, EU, klimt@wip.pcz.pl
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
1502-1506
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
310 views / 104 downloads
Abstract

The connection between metal and ceramic occurs by physical, chemical and in small extent by mechanical forces, special attention is applied to the every stage of metal surface preparation before ceramics application. The paper presents the results of microscopic cross-sections observation of Ni-Cr-Mo coated with opaquer and dental ceramics layers. On the basis of variables sandblasting parameters found that this treatment tends to increase the diversity of the surface. Short term (because a 15-second) sandblasting makes the metal surface irregular, and the presence of hollows and hills on the surface contribute to increased adhesion between layers of opaquer and ceramic. The usage of longer sandblasting time makes that the irregularities are rather rifts and burrs. In addition, the dimensions of the resulting irregularities restrains the correct and accurate surface oxidation of the alloy, but also restrains the correct and even surface coverage within opaque Highly diverse of the alloy surface contributes to the numerous gaps, cavities and voids on the border of the metal - ceramic connection.

Keywords: Ni-Cr-Mo alloy, dental alloy, metal-ceramic system

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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