Microstructural Characterization of Co-Cr-Mo-W Alloy as Casting for Odontological Application
Journal Title: International Journal of engineering Research and Applications - Year 2017, Vol 7, Issue 3
Abstract
Interest in the analysis and material characterization is rising due to the necessity of the adequate material selection based on system performance in study. The analysis and knowledge of the microstructure and the mechanical properties of any material are of utmost importance since it aims primarily to estimate the performance during the material life span, minimizing the possibility of degradation and undesirable flaws during product utilization. Co-Cr-Mo-W alloys have been well accepted in odontology as prosthesis material, due to its high mechanical resistance, good corrosion resistance and exceptional biocompatibility properties. This study aims to characterize the microstructure of a cobalt based alloy (Co-Cr-Mo-W) obtained through vacuum casting process. Optical microscopy, electronic sweeping microscopy and X-ray were employed and Vickers hardness test with loads of 100 gf, 500 gf and 1000 gf during 10 s. Microstructure casting is characterized by a Co-fcc dendritic matrix with a secondary phase, as well as M23C6 precipitate carbides in the interdendritics zones and grain boundaries. The precipitation of carbides represents the main device of strengthening in the cast state for these types of alloys and is also responsible for its lower mechanical properties. The material attained hardness between 25 and 35 HRC, meeting the ASTM F75 standards.
Authors and Affiliations
Priscila S. N. Mendes, Jefferson Fabrício C. Lins, Patrícia S. N. Mendes, Willie R. Prudente, Rodrigo P. Siqueira, Rodrigo E. Pereira, Said M. S. Rocha, Alexandre R. Leoni
Keywords
Related Articles
- EP ID EP390283
- DOI 10.9790/9622- 0703013437.
- Views 136
- Downloads 0
Diabetes Prediction Using Machine Learning Techniques
Diabetes is a chronic disease with the potential to cause a worldwide health care crisis. According to International Diabetes Federation 382 million people are living with diabetes across the whole world. By 2035, this w...
Is it necessary to measure all brain regions for the assessment of PAF?
From decades of research, electroencephalography (EEG) has been proved as a potential non-invasive medical technique to measure the electrophysiological activities of brain. Alpha is one of the most prominent frequency b...
Direct Power Control of Three Phase PWM Rectifier based DSOGI-VF Estimator for No-Ideal LineVoltages Conditions
In this paper, direct power control (DPC) of three-phase pulse width-modulated rectifiers without line voltage sensors is presented. The new system is based on virtual flux (VF) using dual Second Order Generalized Integr...
Promoting Croatian Tourism Promotion through Diplomacy
.
A Knotworking Guideline for Building Projects: Bridging the Gap between Participants
The high level of complexity in today‟s building design requires a high level of multidisciplinary collaboration, which historically is uncommon in the Architecture, Construction and Engineering (AEC) sector. While the A...