|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Advanced Biomaterials
||PAN-9: Selective Laser Sintering of Co-Cr-Mo Alloy for Dental Applications
||Claudinei Santos, Alexandre Fernandes Habibe, Paula Cipriano Silva, Bruno Galvão Simba
|On-Site Speaker (Planned)
In this work, the dental prosthesis based on Co-Cr-Mo alloy were developed using selective laser sintering technique (SLS). 61.1wt.%Co-25.6Cr-6.2Mo-5.5W atomized powder was characterized by X-Ray diffraction and scanning electron microscopy. Models of fixed-bridge were are designed in Solid Works software and laser sintered(EOSINTŪM-270) at 1340°C, submitted to thermal stress relieving (750°C-45min under argon flow) and characterized by crystalline phases, relative density, microstructure, hardness, elastic modulus and coefficient of thermal expansion (CTE). The sintered samples present FCC-Co and HP-Co as crystalline phases, resulting from the cooling conditions which the layers were subjected during the application of heat induced by the laser beam. Relative density of 95.4%, CTE of 14,1x10-6/°C, hardness of 338HV and Young modulus of 208GPa were obtained in sintered samples. The results indicate properties in accordance with ASTM F1537, compatible with dental applications typically recommended for bridges containing 4 or more units or fully dense pontics.
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