Brazing characteristics of ZrO2 and Ti-6Al-4V brazed joints with increasing temperature / 대한치과보철학회지
The Journal of Korean Academy of Prosthodontics
;
: 169-175, 2012.
Article
in Korean
| WPRIM
| ID: wpr-27863
ABSTRACT
PURPOSE:
In this study, brazing characteristics of ZrO2 and Ti-6Al-4V brazed joints with increasing temperature were investigated. MATERIALS ANDMETHODS:
The sample size of the ZrO2 was 3 mm x 3 mm x 3 mm (thickness), and Ti-6Al-4V was 10 mm (diameter) x 5 mm (thickness). The filler metal consisted of Ag-Cu-Sn-Ti was prepared in powder form. The brazing sample was heated in a vacuum furnace under 5 x 10(-6) torr atmosphere, while the brazing temperature was changed from 700 to 800degrees C for 30 min.RESULTS:
The experimental results shows that brazed joint of ZrO2 and Ti-6Al-4V occurred at 700 - 800degrees C. Brazed joint consisted of Ag-rich matrix and Cu-rich phase. A Cu-Ti intermetallic compounds and a Ti-Sn-Cu-Ag alloy were produced along the Ti-6Al-4V bonded interface. Thickness of the reacted layer along the Ti-6Al-4V bonded interface was increased with brazing temperature. Defect ratios of ZrO2 and Ti-6Al-4V bonded interfaces decreased with brazing temperature.CONCLUSION:
Thickness and defect ratio of brazed joints were decreased with increasing temperature. Zirconia was not wetting with filler metal, because the reaction between ZrO2 and Ti did not occur enough.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Atmosphere
/
Titanium
/
Vacuum
/
Zirconium
/
Dental Implants
/
Sample Size
/
Alloys
/
Hot Temperature
/
Joints
Language:
Korean
Journal:
The Journal of Korean Academy of Prosthodontics
Year:
2012
Type:
Article
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