Pub Date : 2023-01-01DOI: 10.1590/1980-5373-mr-2022-0227er
{"title":"Erratum: Structural and Optical Properties of TIPS Pentacene Thin Film Exposed to Gamma Radiation","authors":"","doi":"10.1590/1980-5373-mr-2022-0227er","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0227er","url":null,"abstract":"","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67301476","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 : 2023-01-01DOI: 10.1590/1980-5373-mr-2023-0079
Vinicius C. Ottani, M. S. Pereira, Matheus S. T. Arruda, M. Rossi, C. Afonso
{"title":"Influence of Alloying Elements and Solution Heat Treatment on Microstructure and Microhardness of the Ni-Nb-M System (M = Al, Ti, Cr, Fe)","authors":"Vinicius C. Ottani, M. S. Pereira, Matheus S. T. Arruda, M. Rossi, C. Afonso","doi":"10.1590/1980-5373-mr-2023-0079","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2023-0079","url":null,"abstract":"","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"2 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304787","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 : 2023-01-01DOI: 10.1590/1980-5373-mr-2022-0505
S. S. Araújo, Gleyson T. A. Santos, G. R. Tolosa, C. T. Hiranobe, E. Budemberg, F. Cabrera, Michael J. Silva, L. Paim, A. Job, R. J. Santos
The biodiversity of plant resources is a renewable source that can use as a sustainable component in various applications. The use of vegetable waste as a filler element in polymeric composites is part of the solid waste management policy and the sustainable development of agribusiness. In this work, the natural rubber composites were prepared with acai seed in proportions of 0, 10, 20, 30, 40, and 50 phr (per hundred rubber). The composites were homogenized in an open cylinder mixer and characterized by rheometric, morphological, mechanical, and thermal tests. The addition of the organic fillers significantly reduced the vulcanization process time. Thermogravimetric analysis and infrared spectroscopy showed that the composites were thermally stable and showed no structure changes after the vulcanization process, respectively. The Lorenz-Parks method’s evaluation of matrix/filler interactions showed a strong interaction between NR/Acai. The new biocomposite can replace non-ecological composites economically and sustainably
{"title":"Acai Residue as an Ecologic Filler to Reinforcement of Natural Rubber Biocomposites","authors":"S. S. Araújo, Gleyson T. A. Santos, G. R. Tolosa, C. T. Hiranobe, E. Budemberg, F. Cabrera, Michael J. Silva, L. Paim, A. Job, R. J. Santos","doi":"10.1590/1980-5373-mr-2022-0505","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0505","url":null,"abstract":"The biodiversity of plant resources is a renewable source that can use as a sustainable component in various applications. The use of vegetable waste as a filler element in polymeric composites is part of the solid waste management policy and the sustainable development of agribusiness. In this work, the natural rubber composites were prepared with acai seed in proportions of 0, 10, 20, 30, 40, and 50 phr (per hundred rubber). The composites were homogenized in an open cylinder mixer and characterized by rheometric, morphological, mechanical, and thermal tests. The addition of the organic fillers significantly reduced the vulcanization process time. Thermogravimetric analysis and infrared spectroscopy showed that the composites were thermally stable and showed no structure changes after the vulcanization process, respectively. The Lorenz-Parks method’s evaluation of matrix/filler interactions showed a strong interaction between NR/Acai. The new biocomposite can replace non-ecological composites economically and sustainably","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67303359","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 : 2023-01-01DOI: 10.1590/1980-5373-mr-2023-0214
Rafael Formenton Macedo dos Santos, Pedro Akira Bazaglia Kuroda, Carolina Neves Reis, Conrado Ramos Moreira Afonso
{"title":"Influence of Hot Rolling on β Ti-Nb-Zr(-Ta) Multiprincipal Alloys for Biomedical Application","authors":"Rafael Formenton Macedo dos Santos, Pedro Akira Bazaglia Kuroda, Carolina Neves Reis, Conrado Ramos Moreira Afonso","doi":"10.1590/1980-5373-mr-2023-0214","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2023-0214","url":null,"abstract":"","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135318027","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 : 2023-01-01DOI: 10.1590/1980-5373-mr-2023-0127
Mohammed A. Almomani, Mohammed T. Hayajneh, Mohammad Y. Al-Daraghmeh
This study aims to examine the potential improvement of uniform corrosion resistance and critical pitting potential of AISI 316L stainless steel (SS) in a simulated marine environment containing 3.5 wt. % NaCl by applying layer of gelatin containing HfO2 nanoparticles using spin coating. Also, to examine the statistical significance of using different weight fractions of HfO2 in the applied layer on the corrosion protection performance. The corrosion performance was assessed from potentiodynamic polarization. X-ray diffraction (XRD) was used to check the presence of HfO2 in gelatin matrix. Scanning electron microscopy (SEM), and energy dispersive X-ray analysis (EDX) were used to examine the surface morphology and elemental composition of corrosion products. The results showed that the applied nanocomposite coatings enhanced both uniform and localized corrosion resistance of the underlying AISI 316L SS, also Analysis of Variance (ANOVA) test approved that the weight fractions of dispersed HfO2 nanoparticles have a statistical significant effect on the corrosion performance. Nanocomposites coating having 2 wt.% of HfO2 showed the best performance as compared to other examined coatings.
{"title":"Applying ANOVA to Study the Effect of Weight Factions of the Nano-Hafnia Dispersed in Spin Coated Gelatin on the Corrosion Behaviour of AISI 316L Steel","authors":"Mohammed A. Almomani, Mohammed T. Hayajneh, Mohammad Y. Al-Daraghmeh","doi":"10.1590/1980-5373-mr-2023-0127","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2023-0127","url":null,"abstract":"This study aims to examine the potential improvement of uniform corrosion resistance and critical pitting potential of AISI 316L stainless steel (SS) in a simulated marine environment containing 3.5 wt. % NaCl by applying layer of gelatin containing HfO2 nanoparticles using spin coating. Also, to examine the statistical significance of using different weight fractions of HfO2 in the applied layer on the corrosion protection performance. The corrosion performance was assessed from potentiodynamic polarization. X-ray diffraction (XRD) was used to check the presence of HfO2 in gelatin matrix. Scanning electron microscopy (SEM), and energy dispersive X-ray analysis (EDX) were used to examine the surface morphology and elemental composition of corrosion products. The results showed that the applied nanocomposite coatings enhanced both uniform and localized corrosion resistance of the underlying AISI 316L SS, also Analysis of Variance (ANOVA) test approved that the weight fractions of dispersed HfO2 nanoparticles have a statistical significant effect on the corrosion performance. Nanocomposites coating having 2 wt.% of HfO2 showed the best performance as compared to other examined coatings.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135649088","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 : 2023-01-01DOI: 10.1590/1980-5373-mr-2023-0250
Adriel P. Oliveira, Gustavo Figueira, Reginaldo T. Coelho, Claudemiro Bolfarini, Piter Gargarella
{"title":"Application of the Box-Behnken Design in the Optimization of Laser Powder Bed Fusion of H13 Tool Steel","authors":"Adriel P. Oliveira, Gustavo Figueira, Reginaldo T. Coelho, Claudemiro Bolfarini, Piter Gargarella","doi":"10.1590/1980-5373-mr-2023-0250","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2023-0250","url":null,"abstract":"","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135700713","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 : 2023-01-01DOI: 10.1590/1980-5373-mr-2023-0154
Heronilton Mendes de Lira, Wésia Amanda de Oliveira Barbosa, Euclides Apolinário Cabral de Pina, Alexandre Douglas Araújo de Moura, Pilar Rey Rodriguez, Ivanilda Ramos de Melo, Oscar Olímpio de Araújo Filho
In this work, composite powders of aluminum alloy 7075 (AA7075) reinforced by 2 weight percent of nanosized particles of silicon carbide (SiC), titanium nitride (TiN), and zinc oxide (ZnO) were produced in a bath of isopropyl alcohol by high energy ball milling during 480 min at 25 ºC, 900 rpm, and Balls-to-Powder Weight Ratio (BPR) of 20:1. The techniques of X-Ray Diffraction (XRD), Laser Diffraction Method (LDM), Scanning Electron Microscopy (SEM), and microanalysis of Energy Dispersive Spectroscopy (EDS) were used to characterize the powders as received and processed. Then, the composites were hot extruded and characterized by XRD, SEM, and microhardness Vickers (HV). The milling process reduces the crystallite and particle size to around 30 nm and 10 µm, respectively. After extrusion, a fine microstructure and good consolidation were found for all bars, except for AA7075 as received. The ranging microhardness values were from 97 HV to 121 HV.
{"title":"Manufacturing of AA7075 Aluminum Alloy Composites Reinforced by Nanosized Particles of SiC, TiN, and ZnO by High-Energy Ball Milling and Hot Extrusion","authors":"Heronilton Mendes de Lira, Wésia Amanda de Oliveira Barbosa, Euclides Apolinário Cabral de Pina, Alexandre Douglas Araújo de Moura, Pilar Rey Rodriguez, Ivanilda Ramos de Melo, Oscar Olímpio de Araújo Filho","doi":"10.1590/1980-5373-mr-2023-0154","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2023-0154","url":null,"abstract":"In this work, composite powders of aluminum alloy 7075 (AA7075) reinforced by 2 weight percent of nanosized particles of silicon carbide (SiC), titanium nitride (TiN), and zinc oxide (ZnO) were produced in a bath of isopropyl alcohol by high energy ball milling during 480 min at 25 ºC, 900 rpm, and Balls-to-Powder Weight Ratio (BPR) of 20:1. The techniques of X-Ray Diffraction (XRD), Laser Diffraction Method (LDM), Scanning Electron Microscopy (SEM), and microanalysis of Energy Dispersive Spectroscopy (EDS) were used to characterize the powders as received and processed. Then, the composites were hot extruded and characterized by XRD, SEM, and microhardness Vickers (HV). The milling process reduces the crystallite and particle size to around 30 nm and 10 µm, respectively. After extrusion, a fine microstructure and good consolidation were found for all bars, except for AA7075 as received. The ranging microhardness values were from 97 HV to 121 HV.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136005547","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 : 2023-01-01DOI: 10.1590/1980-5373-mr-2022-0544
G. Ribeiro, Renato Spacini de Castro, Rogério Góes dos Santos, A. Bugarin, M. Terada, G. Batalha, A. Couto
{"title":"Characterization of Ti6Al4V Alloy Produced by Laser-Powder Bed Fusion and Surface Modification Using Nanosecond Laser","authors":"G. Ribeiro, Renato Spacini de Castro, Rogério Góes dos Santos, A. Bugarin, M. Terada, G. Batalha, A. Couto","doi":"10.1590/1980-5373-mr-2022-0544","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2022-0544","url":null,"abstract":"","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67303729","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 : 2023-01-01DOI: 10.1590/1980-5373-mr-2023-0011
L. S. Batista, Fabiana Maria da Silva, A. E. Gomes, L. A. Gachet, José Maria Campos dos Santos, M.L.M. Melo, Maria Rachel de Araújo Russo, R. C. C. Lintz
The excessive production of new tires and the inappropriate disposal of waste tires have caused serious environmental and public health problems. To properly dispose of this environmental liability, these rubber residues have been used in cement composites to improve some of their properties in the hardened state. This study evaluates the incorporation of rubber and vermiculite residues in concrete in terms of mechanical and acoustic properties. Different concrete compositions were defined where rubber waste and vermiculite were used to replace the natural sand mass. To characterize the concretes, mechanical and acoustic tests, and analysis of the microstructure of the material were carried out to better understand its properties. An improvement in the acoustic properties can be seen in the composites with rubber and vermiculite. Thus, the great contribution of this research is the development of concrete compositions for acoustic barriers, technically viable, adding environmental benefits.
{"title":"Mechanical and Acoustic Performance of Concrete Containing Vermiculite and Rubber","authors":"L. S. Batista, Fabiana Maria da Silva, A. E. Gomes, L. A. Gachet, José Maria Campos dos Santos, M.L.M. Melo, Maria Rachel de Araújo Russo, R. C. C. Lintz","doi":"10.1590/1980-5373-mr-2023-0011","DOIUrl":"https://doi.org/10.1590/1980-5373-mr-2023-0011","url":null,"abstract":"The excessive production of new tires and the inappropriate disposal of waste tires have caused serious environmental and public health problems. To properly dispose of this environmental liability, these rubber residues have been used in cement composites to improve some of their properties in the hardened state. This study evaluates the incorporation of rubber and vermiculite residues in concrete in terms of mechanical and acoustic properties. Different concrete compositions were defined where rubber waste and vermiculite were used to replace the natural sand mass. To characterize the concretes, mechanical and acoustic tests, and analysis of the microstructure of the material were carried out to better understand its properties. An improvement in the acoustic properties can be seen in the composites with rubber and vermiculite. Thus, the great contribution of this research is the development of concrete compositions for acoustic barriers, technically viable, adding environmental benefits.","PeriodicalId":18331,"journal":{"name":"Materials Research-ibero-american Journal of Materials","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67304245","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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