밀링 방법과 주조 방법으로 제작한 코발트-크롬 합금의 3점 굽힘 시험을 통한 기계적인 특성 비교
Comparison of Mechanical Properties of Milled and Casted Cobalt-Chromium Alloys Using Three-point Bending Test
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Purpose: The objective of this study was to investigate the mechanical properties of Cobalt- Chromium (Co-Cr) alloys made by conventional casting method and Computer-Aided Design/ Computer –Aided Manufacturing (CAD-CAM) milling method. Material and Methods: Co-Cr alloy specimens (n=8) were made by casting and milling methods. The size of the specimens was 34 mm × 13 mm × 1.5 mm, according to ISO 22674: 2016. Three-point bending test was conducted by universal testing machine, stress and strain values were obtained. Statistical significance was tested using the t-test. Results: Flexural strength of the milled sample was significantly lower than of casted (p < 0.05). Similarly, 0.2% yield strength of milled sample was also lower than of casted (p < 0.05). Conclusion: Although there is a significant difference in mechanical properties of milled and casted Co-Cr alloy, they are both are clinically acceptable.
Abstract
Purpose: The objective of this study was to investigate the mechanical properties of Cobalt- Chromium (Co-Cr) alloys made by conventional casting method and Computer-Aided Design/ Computer –Aided Manufacturing (CAD-CAM) milling method. Material and Methods: Co-Cr alloy specimens (n=8) were made by casting and milling methods. The size of the specimens was 34 mm × 13 mm × 1.5 mm, according to ISO 22674: 2016. Three-point bending test was conducted by universal testing machine, stress and strain values were obtained. Statistical significance was tested using the t-test. Results: Flexural strength of the milled sample was significantly lower than of casted (p < 0.05). Similarly, 0.2% yield strength of milled sample was also lower than of casted (p < 0.05). Conclusion: Although there is a significant difference in mechanical properties of milled and casted Co-Cr alloy, they are both are clinically acceptable.
참고문헌 (11)
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