Karlo Raić (Author), Rebeka Rudolf (Author), Aleksandar Todorović (Author), Dragoslav Stamenković (Author), Ivan Anžel (Author)

Abstract

Metal-ceramic fusing has been the essential step in obtaining materials that benefit from both ceramic and metal constituents, i.e. where the combined properties of metal and ceramic layers are desirable. When considering fusing methods, soldering and active metal brazing are the most effective. These processes involve braze melting and flowing between the two pieces of material. In the first part the phenomena occurring on the boundary between the ceramics and the active filler metal during the metal-ceramics joining are discussed. Three interconnected sub-processes are considered: (1) wetting of the ceramic surface, (2) chemical reactions at the interface and (3) diffusion with a moving interface. Then, the appearances at the grain boundary grooves of the ceramic surface are presented as phenomena on the catalytic surface. In the second part, examples from dental practice and jewellery manufacturing are used for comparative analysis. Finally, we discuss the composition and properties of the soldering and brazing alloys used for dental practice and jewellery manufacturing.

Keywords

metal-ceramic bonding;brazing;soldering;dentistry;jewellery;

Data

Language: English
Year of publishing:
Typology: 1.02 - Review Article
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: Inštitut za kovinske materiale in tehnologije Ljubljana
UDC: 669:666:616.31:739
COBISS: 14027542 Link will open in a new window
ISSN: 1580-2949
Parent publication: Materiali in tehnologije
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Other data

Secondary language: Slovenian
Secondary title: Staljene vmesne površine med kovino in keramiko v zobozdravstvu in pri izdelavi nakita
Secondary abstract: Zlitje kovine in keramike je temeljna stopnja za nastanek materiala, ki pridobi lastnosti obeh sestavnih delov, kjer je želena kombinacija lastnosti plasti kovine in keramike. Od metod zlitja sta lotanje in aktivno spajkanje najbolj učinkoviti. Procese sestavljata taljenje in pretok taline med obema materialoma. V prvem delu razpravljamo o procesih na meji med keramiko in aktivnim polnilnim materialom med spajanjem kovine in keramike. Obravnavamo tri povezane procese: (1) omo~ljivost keramične površine, (2) kemične reakcije na vmesni površini in (3) difuzijo s premikajočo se mejno površino. Nato obravnavamo nastanek žlebov na mejah zrn na katalitični površini. V drugem delu uporabljamo primere iz dentalne prakse in izdelave nakita za primerjalno analizo. Na koncu je razprava o sestavi in lastnostih spajk in lotov, ki se uporabljajo v dentalni praksi in pri izdelavi nakita.
Secondary keywords: vezava keramika-kovina;lotanje;spajkanje;zobozdravstvo;nakit;
URN: URN:NBN:SI
Type (COBISS): Scientific work
Pages: str. 59-66
Volume: ǂLetn. ǂ44
Issue: ǂšt. ǂ2
Chronology: 2010
ID: 1731247