Banca de DEFESA: ANDERSON WAGNER ALVES DE MENEZES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ANDERSON WAGNER ALVES DE MENEZES
DATE: 18/12/2020
TIME: 09:00
LOCAL: Google Meet
TITLE:

Study of hydroxyapatite deposition by PEO in Ti cp2 and stainless steel AISI 316lvm samples

KEY WORDS:

PEO, Hydroxyapatite, Titanium, 316lvm steel, dental implants.

PAGES: 75
BIG AREA: Engenharias
AREA: Engenharia Mecânica
SUMMARY:

The tissue-prosthesis relationship is of crucial importance for the success of an implant. Aiming at higher levels of affinity between the implant and the human body, engineering focuses on studies on ceramic coating processes, surface modifications and search for new materials. Many research has been done on the coating of metal surfaces with hydroxyapatite, due to their characteristics being similar to the human bone, through the oxidative electrolytic plasma (PEO) technique, aiming at improving the biocompatibility of implants, increasing service life and reducing rejection processes or adverse reactions. Thus, the given work sought to study the influence of some variables of the PEO process on the formation of a hydroxyapatite coating on Ti cp2 and AISI 316lvm steel surfaces. For this purpose, were analyzed the pH variation of the electrolytic solution (1 to 9), the total treatment time (15 to 90s), the behavior of the electrical current in time, the polarity of treatment and the electrolytic solution, always for the variation of only one of the parameters mentioned. The results of XRF, EDS and SEM-FEG denoted the success in performing a coating, which according to the treatment variables may present varying levels of thickness, porosity, topography and percentage of the base elements of hydroxyapatite (Ca and P).

BANKING MEMBERS:
Externo ao Programa - 2820855 - MAXWELL SANTANA LIBÓRIO
Presidente - 2614274 - MICHELLE CEQUEIRA FEITOR
Externo à Instituição - ROMULO RIBEIRO MAGALHAES DE SOUSA - UFPI
Interno - 2550377 - THERCIO HENRIQUE DE CARVALHO COSTA