The effect of degassing and peroxidation on the metal-ceramic bonding strength of Pd-Ag alloy
10.3969/j.issn.1001-3733.2015.02.012
- VernacularTitle:除气和预氧化对钯银合金金瓷结合强度的影响
- Author:
Bohua LI
;
Jiantao YE
;
Yonggong WANG
;
Demin YAN
;
Maiquan WANG
;
Ming HOU
- Publication Type:Journal Article
- Keywords:
Pd-Ag alloy;
Degassing;
Peroxidation;
Metal-ceramic bonding strength
- From:
Journal of Practical Stomatology
2015;(2):200-204
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effect of degassing and peroxidation on metal-ceramic bonding strength of Pd-Ag alloy. Methods:The metal-ceramic interface of group A (peroxidation)and B (degassing)was investigated under scanning electronic micro-scope(SEM)and energy dispersive spectrum (EDS).The bond strength between metal and ceramics was measured using a three-point bend test according to ISO9693.Results:The formation of nodules on the surface of alloy specimens was observed in both groups by SEM.The nodules on the specimens of group A were more densely than those of group B.The diameter of nodules in group B was 1 .5μm approximately.The interface of the metal-ceramic specimens had a clear transition porcelain layer and no hole or slit was present. The mean bonding strength of group A and B was (45.97 ±3.92)MPa and (49.1 1 ±6.42)MPa respectively(P=0.031 ).Conclu-sion:Degassing can improve metal-ceramic bonding strength of Pd-Ag alloy significantly.