Pub Date : 2023-07-24DOI: 10.1590/1980-5373-mr-2023-0113
M. A. Souza, Marcia C. M. Lima, A. Escada, B. N. A. S. Pimentel, C. Vergani, R. Sabino, K. Popat, A.P.R. Alves
,
{"title":"Surface Modification of the Ti25Ta25Nb3Sn Alloy and its Influence on The Cell and Bacteria Adhesion - In Vitro Studies","authors":"M. A. Souza, Marcia C. M. Lima, A. Escada, B. N. A. S. Pimentel, C. Vergani, R. Sabino, K. Popat, A.P.R. Alves","doi":"10.1590/1980-5373-mr-2023-0113","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2023-0113","url":null,"abstract":",","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-21DOI: 10.1590/1980-5373-mr-2023-0005
R. S. D. Oliveira, H. A. Folli, I. Horta, B. Damasceno, J. H. C. Augstrose, W. Miyakawa, A. Pereira, M. Massi, A. S. Silva Sobrinho, D. Leite
This work reports on the properties of GaN films grown by reactive magnetron sputtering onto glass substrate kept at relatively low temperature (400°C), using different RF power applied to the Ga target. Their structural, morphological, vibrational and optical properties were characterized by X-ray diffraction, atomic force and scanning electron microscopies, Raman spectroscopy and UV-vis spectrophotometry. The films have wurtzite phase with strong preferential orientation in the c -axis direction. Moreover, two clear contributions to the (0002) diffraction peak could be found, indicating the presence of two different morphologies, which were discussed in terms of the formation of an intermediate layer between the substrate and a dominating columnar-like microstructured film.
{"title":"Identification of Self-Buffer Layer on GaN/glass Films Grown by Reactive Sputtering","authors":"R. S. D. Oliveira, H. A. Folli, I. Horta, B. Damasceno, J. H. C. Augstrose, W. Miyakawa, A. Pereira, M. Massi, A. S. Silva Sobrinho, D. Leite","doi":"10.1590/1980-5373-mr-2023-0005","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2023-0005","url":null,"abstract":"This work reports on the properties of GaN films grown by reactive magnetron sputtering onto glass substrate kept at relatively low temperature (400°C), using different RF power applied to the Ga target. Their structural, morphological, vibrational and optical properties were characterized by X-ray diffraction, atomic force and scanning electron microscopies, Raman spectroscopy and UV-vis spectrophotometry. The films have wurtzite phase with strong preferential orientation in the c -axis direction. Moreover, two clear contributions to the (0002) diffraction peak could be found, indicating the presence of two different morphologies, which were discussed in terms of the formation of an intermediate layer between the substrate and a dominating columnar-like microstructured film.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-21DOI: 10.1590/1980-5373-mr-2022-0479
M. Mohammed, Asaad Hasan Lafta, F. Mohammed
,
{"title":"Surface Characterization of Pure and Composite Sol-gel Nano-coatings Deposited on 316L Stainless Steel for Hard Tissue Replacements","authors":"M. Mohammed, Asaad Hasan Lafta, F. Mohammed","doi":"10.1590/1980-5373-mr-2022-0479","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0479","url":null,"abstract":",","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67303183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-21DOI: 10.1590/1980-5373-mr-2022-0399
Érico Drummond Dantas Silveira, J. Andrade, Reinaldo de Almeida Rodrigues, C. C. Silva, Felipe de Souza Miranda, José Costa de Macêdo Neto
In this study, a hydroxyapatite (HA) coating derived from the scales of the Amazonian fish pirarucu ( Arapaima gigas ) was produced using calcination at 500 and 750 °C and deposited on AISI 316 stainless steel substrate using the process of thermal spraying, high velocity suspension plasma spray (HVSPS). To verify its potential, this material was characterized by X-ray diffraction (XRD), by which characteristic peaks of hydroxyapatite were evidenced. Via X-ray fluorescence (XRF) of the samples, it was observed that the Ca/P ratio was equal to 2.00. Using the Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy, it was possible to observe the characteristic bands of the HA. For the coating, the mechanical nanoindentation test showed mean Vickers microhardness (VH) values of 93.25 VH for the hydroxyapatite and of 196.57 HV for the substrate. The modulus of elasticity (EIT) was 77.85 GPa for the hydroxyapatite coating and 136.45 GPa for the substrate. Optical microscopy showed that the coating was homogeneously deposited.
{"title":"Obtention, Characterization and Deposition of Hydroxyapatite Obtained from Scales of the Amazonian Fish Pirarucu (Arapaima gigas) Using the High Velocity Suspension Plasma Spray (HVSPS) Process","authors":"Érico Drummond Dantas Silveira, J. Andrade, Reinaldo de Almeida Rodrigues, C. C. Silva, Felipe de Souza Miranda, José Costa de Macêdo Neto","doi":"10.1590/1980-5373-mr-2022-0399","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0399","url":null,"abstract":"In this study, a hydroxyapatite (HA) coating derived from the scales of the Amazonian fish pirarucu ( Arapaima gigas ) was produced using calcination at 500 and 750 °C and deposited on AISI 316 stainless steel substrate using the process of thermal spraying, high velocity suspension plasma spray (HVSPS). To verify its potential, this material was characterized by X-ray diffraction (XRD), by which characteristic peaks of hydroxyapatite were evidenced. Via X-ray fluorescence (XRF) of the samples, it was observed that the Ca/P ratio was equal to 2.00. Using the Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy, it was possible to observe the characteristic bands of the HA. For the coating, the mechanical nanoindentation test showed mean Vickers microhardness (VH) values of 93.25 VH for the hydroxyapatite and of 196.57 HV for the substrate. The modulus of elasticity (EIT) was 77.85 GPa for the hydroxyapatite coating and 136.45 GPa for the substrate. Optical microscopy showed that the coating was homogeneously deposited.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67302720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-14DOI: 10.1590/1980-5373-mr-2023-0178
S. Abraar, N. M. Rajhu, T. V. Vardhan, A. Agrawal, K. K. Saxena, V. Savithiri, D. Buddhi, K. Senthilvel, B. Ramesh
Aluminium metal matrix composites are highly dominated composites for various applications such as
{"title":"Experimental Investigation on Metallurgical and Mechanical Properties and Wear Behavior of Al5032/SiC Nanocomposites","authors":"S. Abraar, N. M. Rajhu, T. V. Vardhan, A. Agrawal, K. K. Saxena, V. Savithiri, D. Buddhi, K. Senthilvel, B. Ramesh","doi":"10.1590/1980-5373-mr-2023-0178","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2023-0178","url":null,"abstract":"Aluminium metal matrix composites are highly dominated composites for various applications such as","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-10DOI: 10.1590/1980-5373-mr-2023-0136
D. V. Ribeiro, G. R. Paula, M. Morelli
,
{"title":"Effects of Additivation During MgO Calcination on Properties of MgO Powders and Magnesium Phosphate Cements","authors":"D. V. Ribeiro, G. R. Paula, M. Morelli","doi":"10.1590/1980-5373-mr-2023-0136","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2023-0136","url":null,"abstract":",","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67305260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-07DOI: 10.1590/1980-5373-mr-2023-0111
B. B. Freitas, L. Costa, T. D. Santos, D. Santos
,
，
{"title":"Effects of Hydrogen in Stress Triaxiality of API 5L X70 Steel","authors":"B. B. Freitas, L. Costa, T. D. Santos, D. Santos","doi":"10.1590/1980-5373-mr-2023-0111","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2023-0111","url":null,"abstract":",","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-07DOI: 10.1590/1980-5373-mr-2022-0622
I. C. Vaz, A. C. Cabral, A. Procópio, Hugo Marlon da Silva Nascimento, Daniel Coelho do Amaral, Francisco Moura Filho
The study presents CeO 2 particles synthesized by the microwave-assisted hydrothermal method using different synthesis times for the analysis of sensitivity to carbon monoxide gas, aiming at its application as a sensor material to prevent poisoning caused by this highly toxic gas. Structural, morphological and spectroscopic and electrical behaviors were analyzed by X-ray diffraction, Rietveld refinement, transmission electronic microscopy, Raman scattering spectroscopy, optoelectronic characterization chamber and FT-IR. The samples presented fluorite-type cubic structures, increase in crystallinity and particle size with the variation synthesis time from 5 to 8 minutes. From the micrographs it was observed that the nanoparticles initially were spherical with a surface domain (200), and the synthesis time made them cubic/polyhedral with a surface (111), showing differences in defects and influencing in its properties. The sample synthesized at 8 minutes showed the best result with response and recovery time of 16 and 2 seconds, respectively, at 390 °C, therefore promising for the fabrication of CO gas selective sensing device.
{"title":"Effect Synthesis Time of CeO2 Nanoparticles by Microwave-Assisted Hydrothermal as a Sensing Device on CO Gas Sensitivity","authors":"I. C. Vaz, A. C. Cabral, A. Procópio, Hugo Marlon da Silva Nascimento, Daniel Coelho do Amaral, Francisco Moura Filho","doi":"10.1590/1980-5373-mr-2022-0622","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0622","url":null,"abstract":"The study presents CeO 2 particles synthesized by the microwave-assisted hydrothermal method using different synthesis times for the analysis of sensitivity to carbon monoxide gas, aiming at its application as a sensor material to prevent poisoning caused by this highly toxic gas. Structural, morphological and spectroscopic and electrical behaviors were analyzed by X-ray diffraction, Rietveld refinement, transmission electronic microscopy, Raman scattering spectroscopy, optoelectronic characterization chamber and FT-IR. The samples presented fluorite-type cubic structures, increase in crystallinity and particle size with the variation synthesis time from 5 to 8 minutes. From the micrographs it was observed that the nanoparticles initially were spherical with a surface domain (200), and the synthesis time made them cubic/polyhedral with a surface (111), showing differences in defects and influencing in its properties. The sample synthesized at 8 minutes showed the best result with response and recovery time of 16 and 2 seconds, respectively, at 390 °C, therefore promising for the fabrication of CO gas selective sensing device.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-03DOI: 10.1590/1980-5373-mr-2022-0490
Saionara Luna, M. Meira, C. L. Rocha, T. Barretto, Carlos Alberto Caldas de Souza
In many applications, such as fuel storage tanks and fuel lines, galvanized steel is used as a construction material which comes into contact with biodiesel. Considering that biodiesel is more corrosive than petroleum diesel, studies that aim to increase the corrosion resistance of galvanized steel in this environment are required. The present work investigates how the chemical conversion treatment in the oxalic acid solution affects the corrosion resistance of galvanized steel in soybean biodiesel (B100) in the absence and presence of the natural additives the extract the turmeric, clove, ginger, stone breaker, and rosemary. The results obtained indicate that the conversion treatment reduces the corrosion rate of the zinc coating in soybean biodiesel in the absence and presence of additives, and in this condition the effect of the conversion treatment depends on the additive used.
{"title":"Effect of Chemical Conversion Treatment with Oxalic Acid Solution in the Corrosion Resistance of Galvanized Steel in Soybean Biodiesel with Natural Additives","authors":"Saionara Luna, M. Meira, C. L. Rocha, T. Barretto, Carlos Alberto Caldas de Souza","doi":"10.1590/1980-5373-mr-2022-0490","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0490","url":null,"abstract":"In many applications, such as fuel storage tanks and fuel lines, galvanized steel is used as a construction material which comes into contact with biodiesel. Considering that biodiesel is more corrosive than petroleum diesel, studies that aim to increase the corrosion resistance of galvanized steel in this environment are required. The present work investigates how the chemical conversion treatment in the oxalic acid solution affects the corrosion resistance of galvanized steel in soybean biodiesel (B100) in the absence and presence of the natural additives the extract the turmeric, clove, ginger, stone breaker, and rosemary. The results obtained indicate that the conversion treatment reduces the corrosion rate of the zinc coating in soybean biodiesel in the absence and presence of additives, and in this condition the effect of the conversion treatment depends on the additive used.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"215 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67303237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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