Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Paulo Sergio Carvalho Pereira da Silva"'
Autor:
Leonardo Contri Campanelli, Paulo Sergio Carvalho Pereira da Silva, Nilson Tadeu Camarinho Oliveira, Claudemiro Bolfarini
Publikováno v:
Materials Research, Vol 20, Iss suppl 2, Pp 120-124 (2017)
Nanotechnology is seeing as having potential to raise benefits to several research and application areas. Recently materials with nanostructured surfaces of nanopores, nanotubes and nanowires have become an important investigation field, since their
Externí odkaz:
https://doaj.org/article/06c2e91d9cb5499d9e53d1b5a98e45c5
Autor:
Fernanda Potomati, Leonardo Contri Campanelli, Paulo Sergio Carvalho Pereira da Silva, José Guilherme Alvarenga Batista Simões, Milton Sergio Fernandes de Lima, Álvaro José Damião, Claudemiro Bolfarini
Publikováno v:
Materials Research, Vol 22, Iss 4 (2019)
The effect of a surface treatment by Nd:YAG laser irradiation on the fatigue behavior of Ti-6Al-4V ELI was studied. Axial fatigue tests were performed to obtain S-N curves in polished and laser treated conditions. Roughness measurements and scanning
Externí odkaz:
https://doaj.org/article/af655d6fa90e4f54a67c20fd1717c9d9
Influence of a Femtosecond Laser Surface Modification on the Fatigue Behavior of Ti-6Al-4V ELI Alloy
Autor:
Alan dos Santos, Leonardo Contri Campanelli, Paulo Sergio Carvalho Pereira da Silva, Rui Vilar, Maria Amélia Martins de Almeida, Alexei Kuznetsov, Carlos Alberto Achete, Claudemiro Bolfarini
Publikováno v:
Materials Research, Vol 22, Iss 4 (2019)
The objective of this investigation was to evaluate the influence of surface modification by femtosecond laser (with average fluence of 0.6 J/cm2 and scanning speed of 0.1 mm/s) on the fatigue resistance of Ti-6Al-4V ELI alloy. A significant reductio
Externí odkaz:
https://doaj.org/article/e4e486a02c03477594fa92e191ef3f88
Autor:
José E. Spinelli, Paulo Sergio Carvalho Pereira da Silva, Amauri Garcia, Leonardo Fernandes Gomes
Publikováno v:
Journal of Materials Engineering and Performance. 29:6849-6860
In recent years, new designing of components provided by electronics and automotive industries has required higher mechanical properties and electrical conductivity. Some of the examples are mobile phone frames, automotive powertrain components and n
Hopping and clustering of oxygen vacancies in BaTiO3-? and the influence of the off-centred Ti atoms
Autor:
Francesco Cordero, D. A. B. Quiroga, Francesco Trequattrini, Paulo Sergio Carvalho Pereira da Silva
Publikováno v:
Journal of alloys and compounds 874 (2021): 159753-1–159753-9. doi:10.1016/j.jallcom.2021.159753
info:cnr-pdr/source/autori:Cordero F.; Trequattrini F.; Quiroga D.A.B.; Silva P.S./titolo:Hopping and clustering of oxygen vacancies in BaTiO3-? and the influence of the off-centred Ti atoms/doi:10.1016%2Fj.jallcom.2021.159753/rivista:Journal of alloys and compounds/anno:2021/pagina_da:159753-1/pagina_a:159753-9/intervallo_pagine:159753-1–159753-9/volume:874
info:cnr-pdr/source/autori:Cordero F.; Trequattrini F.; Quiroga D.A.B.; Silva P.S./titolo:Hopping and clustering of oxygen vacancies in BaTiO3-? and the influence of the off-centred Ti atoms/doi:10.1016%2Fj.jallcom.2021.159753/rivista:Journal of alloys and compounds/anno:2021/pagina_da:159753-1/pagina_a:159753-9/intervallo_pagine:159753-1–159753-9/volume:874
The diffusion and aggregation of oxygen vacancies (VO) in perovskites are still poorly understood, even though they are involved in a wide range of applications and phenomena, from solid-state electrolytes for fuel cells to ferroelectric fatigue. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c091dd6f9d1e55cb2b26ddd72314d461
https://publications.cnr.it/doc/453751
https://publications.cnr.it/doc/453751
Autor:
Rui Vilar, P.W.B. Marques, Paulo Sergio Carvalho Pereira da Silva, M.A. Tito Patricio, Javier Andres Muñoz Chaves, C.J.R. Lustosa, Amélia Almeida, O. Florêncio
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Journal of Materials Research and Technology, Vol 14, Iss, Pp 210-219 (2021)
Universidade de São Paulo (USP)
instacron:USP
Journal of Materials Research and Technology, Vol 14, Iss, Pp 210-219 (2021)
Titanium and Ti alloys are important materials for scientific and technological applications, especially as biomaterials, due to their excellent corrosion resistance, biocompatibility, and mechanical properties. In this work, the influence of tantalu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12e4360cd60b9c95587afd0e337a9a7f
Autor:
Julio Cesar Camilo Albornoz Diaz, Paulo Sergio Carvalho Pereira da Silva, M. Venet, Jean-Claude M’Peko
Publikováno v:
Scientific Reports. 10
Understanding the physics behind changes in dielectric permittivity and mechanical response with temperature and frequency in lead-free ferroic materials is a fundamental key to achieve optimal properties and to guarantee good performance in the tech
Autor:
Sara Beatriz Miranda Lage, Ana Paula de Bribean Guerra, Paulo Sergio Carvalho Pereira da Silva, Leonardo Contri Campanelli, Claudemiro Bolfarini, Jorge Fernandez dos Santos, Junjun Shen
Publikováno v:
Lage, S.; Campanelli, L.; Guerra, A.; Shen, J.; dos Santos, J.; da Silva, P.; Bolfarini, C.: A study of the parameters influencing mechanical properties and the fatigue performance of refill friction stir spot welded AlMgSc alloy. In: The International Journal of Advanced Manufacturing Technology. Vol. 100 (2019) 101-110. (DOI: /10.1007/s00170-018-2696-0)
Friction spot welds of 1.6-mm-thick AlMgSc alloy were investigated in this work. A design of experiment method was used to evaluate the effect of process parameters on the shear static strength. The optimized condition of parameters was employed in t
Autor:
Paulo Sergio Carvalho Pereira da Silva, Claudemiro Bolfarini, Michael J. Kaufman, Francisco Gil Coury, Leonardo Contri Campanelli, Yaofeng Guo
Publikováno v:
Materials Science and Engineering: A. 729:323-330
This work evaluated in depth the fatigue and fracture behavior of the metastable β Ti-15Mo alloy considering the presence of deformation twins and athermal nano-crystalline ω phase in the microstructure. Regardless of the microstructural condition
Autor:
Cesar Adolfo Escobar Claros, Paulo Sergio Carvalho Pereira da Silva, Tales Ferreira, Leonardo Contri Campanelli, Claudemiro Bolfarini, D.P. Oliveira
Publikováno v:
International Journal of Fatigue. 103:258-263
Based on the theors of elasticity for linear elastic materials and strain partitioning, a method was developed to predict fatigue lives of load bearing Ti-6Al-4V ELI implants with surfaces modified in the micrometer scale to promote bioactive materia