Naslov
Influence of joining methods on microstructure and properties of dental materials

Autori
Carek, Andreja ; Živko-Babić, Jasenka ; Schauperl, Zdravko ; Jakovac, Marko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
11. savjetovanje o materijalima, tehnologijama, trenju i trošenju (MATRIB 2006) : zbornik radova / Grilec, Krešimir - Zagreb : Hrvatsko društvo za materijale i tribologiju (HDMT), 2006

ISBN
953-7040-10-0

Skup
Savjetovanje o materijalima, tehnologijama, trenju i trošenju (11 ; 2006)

Mjesto i datum
Vela Luka, Hrvatska, 22.06.2006. - 24.06.2006

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
dental alloys; microstructure; soldering; laser welding; TIG

Sažetak
The reconstructive disciplines are faced with an increasing number of different functional, aesthetic and prophylaxis criteria that must be satisfied. Therefore, numerous technical materials of different composition and properties are currently being used. Due to some technological failures or combining prosthetic reconstructions there is a need for joining together parts of metallic construction either of same composition or those of different compositions. For this purpose different technologies and different conditions are used. The aim of this study was the analysis of microstructure and microhardness of the soldered or welded joints. The analysis involved two Ni-Cr and two Co-Cr alloys. Samples (25 x 10 x 1.5 mm) were cast. Two halves of each sample were joined by soldering, laser welding and electric arc welding (TIG). Joining was performed either by adding materials or without additions. The quality of joints and heat affected zone was examined with optical microscopy and SEM. Microstructure was qualitatively and quantitatively analyzed with a special regard to porosity. Microhardness was measured by Vickers method. Soldering gives the best results. Welding is advantageous if all the procedures are performed properly. Otherwise, there are lot of cold cracks.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

POVEZANOST RADA