Dental porcelain/Ni alloy interface reactions and their effective prevention
| Autor: | Ralph W. Phillips, P.G. Winchell, T.R. Peter Williams |
|---|---|
| Rok vydání: | 1978 |
| Předmět: |
0301 basic medicine
Silicon Materials science Time Factors Surface Properties Alloy Oxide chemistry.chemical_element engineering.material Oxygen 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Dental porcelain Nickel General Dentistry Metallurgy Dental Bonding Spectrometry X-Ray Emission 030206 dentistry Dental Porcelain 030104 developmental biology chemistry engineering Beryllium Oxidation-Reduction Dental Alloys |
| Zdroj: | Journal of dental research. 57(4) |
| ISSN: | 0022-0345 |
| Popis: | In a Be-bearing Ni alloy porcelainized without preoxidation, Be diffuses to the interface, oxidizes, and oxygen is supplied by the atmosphere at the porcelain surface and by reduction of SiO2 at the porcelain-alloy interface. On the alloy side of the interface, pits develop locally and near them Ni and Cr oxidize. In the oxide, Ni and Si are reduced to form nickel silicides. Preoxidation of the alloy prevents Be oxidation and Si reduction for several hours of porcelainization. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|