Effect of titanium powder on the bond strength of metal heat treatment.
10.14368/jdras.2017.33.2.71
- Author:
Sa Hak KIM
1
;
Wook Tae KIM
Author Information
1. Department of Dental Technology, Kyungdong University, Uijeongbu, Republic of Korea.
- Publication Type:Original Article
- Keywords:
Beryllium;
Titanium;
chemical catalyst;
oxide film;
bond strength
- MeSH:
Alloys;
Beryllium;
Dental Porcelain;
Hot Temperature*;
Oxides;
Surface Properties;
Thinness;
Titanium*
- From:Journal of Dental Rehabilitation and Applied Science
2017;33(2):71-79
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: Ni-Cr alloy does not contain Beryllium, causing the metal compound to form oxides in the furnace but by using Titanium as a chemical catalyst the forming of the oxides can be controlled, and by controlling the impurities formed on the metal surface, the possibility of the Ni-Cr alloy bond strength being increased can be analysed. MATERIALS AND METHODS: Titanium was used as a chemical catalyst in the porcelain for the oxidation of beryllium-free metal (Ni-Cr) alloy. The T1 group, which does not use Titanium power as a chemical catalyst is a reference model for comparison. The T2 group and T3 group used 10 g and 20 g of Titanium power, respectively. They are fabricated to observe the shear bond strength and surface properties. There was no significance when One-way ANOVA analysis/Tukey Honestly Significant Difference Test was conducted for statistical analysis among groups (P > 0.05). RESULTS: Results of measuring the three-point flexural bond strength of the Ni-Cr alloy and thickness of the oxide film. Experiment T3 using 20 g Titanium chemical catalyst: 39.22 ± 3.41 MPa and 6.66 µm, having the highest bond strength and thinness of oxide film. Experiment T2 using 10 g Titanium chemical catalyst: 34.65 ± 1.39 MPa and 13.22 µm. Experiment T1 using no Titanium chemical catalyst: 32.37 ± 1.91 MPa and 22.22 µm. CONCLUSION: The T2 and T3 experiments using Titanium chemical catalyst showed higher bond strength for the Ni-Cr alloy and lower thickness of oxide film than experiment T1, and the titanium catalyst being able to increase bond strength was observed.
