Effect of Cooling Rate on the Longitudinal Modulus of Cu3Sn Phase of Ag-Sn-Cu Amalgam Alloy (Part II)
Effects of cooling rate (at the time of solidification on the elastic constants of Cu<sub>3</sub>Sn phase of Ag-Sn-Cu dental amalgam alloy were studied. In this study, three types of alloys were made, with the composition Cu-38-37 wt% Sn by means of casting, where each alloy was subjecte...
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| Format: | Article |
| Language: | English |
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Faculty of Dentistry, Universitas Indonesia
2015-10-01
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| Series: | Journal of Dentistry Indonesia |
| Online Access: | http://jdentistry.ui.ac.id/index.php/JDI/article/view/776 |
| Summary: | Effects of cooling rate (at the time of solidification on the elastic constants of Cu<sub>3</sub>Sn phase of Ag-Sn-Cu dental amalgam alloy were studied. In this study, three types of alloys were made, with the composition Cu-38-37 wt% Sn by means of casting, where each alloy was subjected to different cooling rate, such as cooling on the air (AC), air blown (AB), and quenched in the water (WQ). X-ray diffraction, metallography, and Scanning Electron Microscopy with Energy Dispersive Spectroscopy studies of three alloys indicated the existence of Cu<sub>3</sub>Sn phase. Determination of the modulus of elasticity of Cu<sub>3</sub>Sn (ε) phase was carried out by the measurement of longitudinal and transversal waves velocity using ultrasonic technique. The result shows that Cu<sub>3</sub>Sn (ε) phase on AC gives higher modulus of elasticity values than those of Cu<sub>3</sub>Sn (ε) on AB and WQ. The high modulus of elasticity value will produce a strong Ag-Sn-Cu dental amalagam alloy. |
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| ISSN: | 1693-9697 2355-4800 |