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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Microstructural and Mechanical Characterization of a Custom-Built Implant Manufactured in Titanium Alloy by Direct Metal Laser Sintering

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Larosa, Maria Aparecida [1, 2] ; Jardini, Andre Luiz [1, 2] ; de Carvalho Zavaglia, Cecilia Amelia [3, 2] ; Kharmandayan, Paulo [2, 4] ; Calderoni, Davi Reis [2, 4] ; Maciel Filho, Rubens [2, 1]
Total Authors: 6
[1] Univ Estadual Campinas, Sch Chem Engn, BR-13083852 Campinas, SP - Brazil
[2] Inst Biofabricat INCT BIOFABRIS, BR-13083852 Campinas, SP - Brazil
[3] Univ Estadual Campinas, Sch Mech Engn, BR-13083860 Campinas, SP - Brazil
[4] Univ Estadual Campinas, Sch Med Sci, BR-13083887 Campinas, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Web of Science Citations: 6

Custom-built implants manufacture has always presented difficulties which result in high cost and complex fabrication, mainly due to patients' anatomical differences. The solution has been to produce prostheses with different sizes and use the one that best suits each patient. Additive manufacturing technology, incorporated into the medical field in the late 80's, has made it possible to obtain solid biomodels facilitating surgical procedures and reducing risks. Furthermore, this technology has been used to produce implants especially designed for a particular patient, with sizes, shapes, and mechanical properties optimized, for different areas of medicine such as craniomaxillofacial surgery. In this work, the microstructural and mechanical properties of Ti6Al4V samples produced by direct metal laser sintering (DMLS) are studied. The microstructural and mechanical characterizations have been made by optical and scanning electron microscopy, X-ray diffraction, and microhardness and tensile tests. Samples produced by DMLS have a microstructure constituted by hexagonal alpha ` martensite with acicular morphology. An average microhardness of 370 HV was obtained and the tensile tests showed ultimate strength of 1172 MPa, yield strength of 957 MPa, and elongation at rupture of 11%. (AU)

FAPESP's process: 10/05321-1 - Development of implantable biomedical prothesis of titanium alloy using sintering direct metal laser
Grantee:Maria Aparecida Larosa
Support type: Scholarships in Brazil - Post-Doctorate