{"id":{"repo_id":"brazil-ufrn","oai_identifier":"oai:repositorio.ufrn.br:123456789/25065"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-ufrn/oai:repositorio.ufrn.br:123456789/25065","repository":{"repo_id":"brazil-ufrn","name":"Brazil UFRN","base_url":"https://repositorio.ufrn.br/server/oai/request"},"display":{"title":"Projeto e fabricação de um reator para tratamento superficial de implantes por oxidação eletrolítica a plasma","abstract":"To date, many studies have been carried out in search of biocompatible materials for the manufacture of implants, mainly in the orthopedic and dental area. In this sense, titanium alloys play an important role for use in implants because of their low density, non-toxicity, corrosion resistance and biocompatibility. Pure titanium in the presence of biological fluids has a thin passive layer of oxide responsible for biocompatibility when inserted into the body. However, this spontaneous oxide layer can be lost, quickly, if inserted in adverse environments. Accordingly, appropriate surface modification is required for titanium based alloys, improving the surface properties and their bioactivity. There is a wide spectrum of surface modification techniques available, such as physical vapor deposition, chemical vapor deposition, anodizing, plasma spraying and Plasma Electrolytic Oxidation (PEO). Among these techniques, PEO is an attractive technique for biomedical applications because of its characteristics that favor osseointegration. However, the characteristics and feasibility of producing coatings made on cylindrical samples are not known when they are produced in quantity within the same electrolytic solution. Therefore, it is necessary to study and better understand the fundamental aspects of this technology under this condition. This may advance the scientific understanding of the PEO process, which could allow a better use of the technique for large-scale applications. Based on the above, electrolytic coatings were made for 1, 8 and 16 minutes, respectively, with a voltage of 290 VDC. The times mentioned above were performed for 1, 2 and 3 samples submerged simultaneously in the same electrolytic solution. To characterize the coating thickness of the samples, the techniques of Optical Microscopy (MO) and Scanning Electron (SEM) were used. To obtain the chemical composition and phase of the coating, the characterization techniques of Dispersive Energy Spectroscopy (EED), X-ray Diffraction (XRD) were used. In order to identify the surface porosity, the rugosimeter, the SEM and the Lissajous figure method were used. For the analysis of wear on the coating, the tribological method was used. In the study of wettability, the sessile drop method was used. The results were homogeneous, porous, hydrophilic and with mechanical resistance to contact. By the Lissajous figure method the level of porosity present in the PEO coatings can be determined. The results showed the capacity of production scalability with characteristics that prove to be favorable to have a homogeneous and stable osseointegration for implants.","abstract_html":"To date, many studies have been carried out in search of biocompatible materials for the manufacture of implants, mainly in the orthopedic and dental area. In this sense, titanium alloys play an important role for use in implants because of their low density, non-toxicity, corrosion resistance and biocompatibility. Pure titanium in the presence of biological fluids has a thin passive layer of oxide responsible for biocompatibility when inserted into the body. However, this spontaneous oxide layer can be lost, quickly, if inserted in adverse environments. Accordingly, appropriate surface modification is required for titanium based alloys, improving the surface properties and their bioactivity. There is a wide spectrum of surface modification techniques available, such as physical vapor deposition, chemical vapor deposition, anodizing, plasma spraying and Plasma Electrolytic Oxidation (PEO). Among these techniques, PEO is an attractive technique for biomedical applications because of its characteristics that favor osseointegration. However, the characteristics and feasibility of producing coatings made on cylindrical samples are not known when they are produced in quantity within the same electrolytic solution. Therefore, it is necessary to study and better understand the fundamental aspects of this technology under this condition. This may advance the scientific understanding of the PEO process, which could allow a better use of the technique for large-scale applications. Based on the above, electrolytic coatings were made for 1, 8 and 16 minutes, respectively, with a voltage of 290 VDC. The times mentioned above were performed for 1, 2 and 3 samples submerged simultaneously in the same electrolytic solution. To characterize the coating thickness of the samples, the techniques of Optical Microscopy (MO) and Scanning Electron (SEM) were used. To obtain the chemical composition and phase of the coating, the characterization techniques of Dispersive Energy Spectroscopy (EED), X-ray Diffraction (XRD) were used. In order to identify the surface porosity, the rugosimeter, the SEM and the Lissajous figure method were used. For the analysis of wear on the coating, the tribological method was used. In the study of wettability, the sessile drop method was used. The results were homogeneous, porous, hydrophilic and with mechanical resistance to contact. By the Lissajous figure method the level of porosity present in the PEO coatings can be determined. The results showed the capacity of production scalability with characteristics that prove to be favorable to have a homogeneous and stable osseointegration for implants.","abstract_has_math":false,"creators":["Nascimento Neto, Arlindo Balbino do"],"institution":"Brasil","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Guerra Neto, Custodio Leopoldino de Brito"],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-12-13","date_published":"2017-12-13","updated_at":"2026-07-24T01:20:51Z","subjects":["Implantes odontológicos","Oxidação Eletrolítica por Plasma (PEO)","Revestimento cerâmico","Titânio","Osseointegração"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://repositorio.ufrn.br/jspui/handle/123456789/25065","outbound_label":"Repository record","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Guerra Neto, Custodio Leopoldino de Brito"]},{"key":"dc:creator","label":"Author","values":["Nascimento Neto, Arlindo Balbino do"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-04-16T22:32:13Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2018-04-16T22:32:13Z"]},{"key":"dc:date.issued","label":"Date","values":["2017-12-13"]},{"key":"dc:type","label":"Dc Type","values":["doctoralThesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Implantes odontológicos","Oxidação Eletrolítica por Plasma (PEO)","Revestimento cerâmico","Titânio","Osseointegração"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://repositorio.ufrn.br/jspui/handle/123456789/25065"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["To date, many studies have been carried out in search of biocompatible materials for the manufacture of implants, mainly in the orthopedic and dental area. In this sense, titanium alloys play an important role for use in implants because of their low density, non-toxicity, corrosion resistance and biocompatibility. Pure titanium in the presence of biological fluids has a thin passive layer of oxide responsible for biocompatibility when inserted into the body. However, this spontaneous oxide layer can be lost, quickly, if inserted in adverse environments. Accordingly, appropriate surface modification is required for titanium based alloys, improving the surface properties and their bioactivity. There is a wide spectrum of surface modification techniques available, such as physical vapor deposition, chemical vapor deposition, anodizing, plasma spraying and Plasma Electrolytic Oxidation (PEO). Among these techniques, PEO is an attractive technique for biomedical applications because of its characteristics that favor osseointegration. However, the characteristics and feasibility of producing coatings made on cylindrical samples are not known when they are produced in quantity within the same electrolytic solution. Therefore, it is necessary to study and better understand the fundamental aspects of this technology under this condition. This may advance the scientific understanding of the PEO process, which could allow a better use of the technique for large-scale applications. Based on the above, electrolytic coatings were made for 1, 8 and 16 minutes, respectively, with a voltage of 290 VDC. The times mentioned above were performed for 1, 2 and 3 samples submerged simultaneously in the same electrolytic solution. To characterize the coating thickness of the samples, the techniques of Optical Microscopy (MO) and Scanning Electron (SEM) were used. To obtain the chemical composition and phase of the coating, the characterization techniques of Dispersive Energy Spectroscopy (EED), X-ray Diffraction (XRD) were used. In order to identify the surface porosity, the rugosimeter, the SEM and the Lissajous figure method were used. For the analysis of wear on the coating, the tribological method was used. In the study of wettability, the sessile drop method was used. The results were homogeneous, porous, hydrophilic and with mechanical resistance to contact. By the Lissajous figure method the level of porosity present in the PEO coatings can be determined. The results showed the capacity of production scalability with characteristics that prove to be favorable to have a homogeneous and stable osseointegration for implants."]},{"key":"dc:title","label":"Title","values":["Projeto e fabricação de um reator para tratamento superficial de implantes por oxidação eletrolítica a plasma"]}]}],"canonical_facts":{"dc:contributor.advisor":["Guerra Neto, Custodio Leopoldino de Brito"],"dc:creator":["Nascimento Neto, Arlindo Balbino do"],"dc:date.accessioned":["2018-04-16T22:32:13Z"],"dc:date.available":["2018-04-16T22:32:13Z"],"dc:date.issued":["2017-12-13"],"dc:description.abstract":["To date, many studies have been carried out in search of biocompatible materials for the manufacture of implants, mainly in the orthopedic and dental area. In this sense, titanium alloys play an important role for use in implants because of their low density, non-toxicity, corrosion resistance and biocompatibility. Pure titanium in the presence of biological fluids has a thin passive layer of oxide responsible for biocompatibility when inserted into the body. However, this spontaneous oxide layer can be lost, quickly, if inserted in adverse environments. Accordingly, appropriate surface modification is required for titanium based alloys, improving the surface properties and their bioactivity. There is a wide spectrum of surface modification techniques available, such as physical vapor deposition, chemical vapor deposition, anodizing, plasma spraying and Plasma Electrolytic Oxidation (PEO). Among these techniques, PEO is an attractive technique for biomedical applications because of its characteristics that favor osseointegration. However, the characteristics and feasibility of producing coatings made on cylindrical samples are not known when they are produced in quantity within the same electrolytic solution. Therefore, it is necessary to study and better understand the fundamental aspects of this technology under this condition. This may advance the scientific understanding of the PEO process, which could allow a better use of the technique for large-scale applications. Based on the above, electrolytic coatings were made for 1, 8 and 16 minutes, respectively, with a voltage of 290 VDC. The times mentioned above were performed for 1, 2 and 3 samples submerged simultaneously in the same electrolytic solution. To characterize the coating thickness of the samples, the techniques of Optical Microscopy (MO) and Scanning Electron (SEM) were used. To obtain the chemical composition and phase of the coating, the characterization techniques of Dispersive Energy Spectroscopy (EED), X-ray Diffraction (XRD) were used. In order to identify the surface porosity, the rugosimeter, the SEM and the Lissajous figure method were used. For the analysis of wear on the coating, the tribological method was used. In the study of wettability, the sessile drop method was used. The results were homogeneous, porous, hydrophilic and with mechanical resistance to contact. By the Lissajous figure method the level of porosity present in the PEO coatings can be determined. The results showed the capacity of production scalability with characteristics that prove to be favorable to have a homogeneous and stable osseointegration for implants."],"dc:identifier.uri":["https://repositorio.ufrn.br/jspui/handle/123456789/25065"],"dc:language":["por"],"dc:rights":["Acesso Aberto"],"dc:subject":["Implantes odontológicos","Oxidação Eletrolítica por Plasma (PEO)","Revestimento cerâmico","Titânio","Osseointegração"],"dc:title":["Projeto e fabricação de um reator para tratamento superficial de implantes por oxidação eletrolítica a plasma"],"dc:type":["doctoralThesis"]},"updated_at":"2026-07-24T01:20:51Z"}