Zobrazeno 1 - 10
of 183
pro vyhledávání: '"Silvio FRANCISCO"'
Publikováno v:
Eng, Vol 5, Iss 3, Pp 1980-1994 (2024)
In this work emphasis was given to determine the evolution of the retained austenite phase fraction via X-ray diffractometry technique in the as-hardened AISI 440C martensitic stainless steel surface subjected to cavitation for increasing test times.
Externí odkaz:
https://doaj.org/article/64bc64a28b3543bc85705013874388b8
Autor:
Daniel Gabay MOREIRA, Enedina Maria Lobato de OLIVEIRA, Fernando Morgadinho dos Santos COELHO, Henrique Ballalai FERRAZ, Silvio FRANCISCO, Vanderci BORGES, Denis Bernardi BICHUETTI
Publikováno v:
Arquivos de Neuro-Psiquiatria, Vol 79, Iss 6, Pp 478-482 (2021)
ABSTRACT Background: Neurological disorders are significant causes of morbidity and mortality worldwide. However, data about general neurological inpatient admissions in Brazil is limited. Objective: To investigate the prevalence of neurological diso
Externí odkaz:
https://doaj.org/article/16dc5399b9c44f63afe3b2f6c1bc0e2c
Autor:
Jomar José Knaip Ribeiro, Alba Regina Turin, Yamid E. Nuñez de la Rosa, Pedro Victorio Caetano Abrantes Quadros, Oriana Palma Calabokis, Carlos Maurício Lepienski, Silvio Francisco Brunatto, Paulo César Borges
Publikováno v:
Metals, Vol 13, Iss 5, p 864 (2023)
This study aimed at the mechanical characterization, on a nanometric scale, of the constituents obtained for different fractions in duplex stainless-steel plates subjected to 850, 950, 1000, and 1150 °C heating treatments via hardness measurements a
Externí odkaz:
https://doaj.org/article/be41281df2c845f78272a5f2d8f05a09
Autor:
Ricardo Kertscher, Juliana Martins de Moraes, Sérgio Henke, Angela Nardelli Allenstein, Regis Henrique Gonçalves e Silva, Jair Carlos Dutra, Silvio Francisco Brunatto
Publikováno v:
Materials Research, Vol 18, Iss 6, Pp 1242-1250 (2015)
This work presents the first results of the plasma nitriding study performed in pure niobium in order to increase its cavitation erosion resistance. Samples were prepared from 98.9% purity and 90% reduction cold-rolled niobium bars. Annealing treatme
Externí odkaz:
https://doaj.org/article/765368bdedcb4c99b96881e8f64fea96
Publikováno v:
Materials Research, Vol 18, Iss 6, Pp 1392-1399 (2015)
Formation of metastable C–, N–, or even Formation of metastable C–, N–, or even C/N– expanded phases can be observed for typical non-equilibrium conditions attained at the plasma assisted thermochemical treatments when temperatures relative
Externí odkaz:
https://doaj.org/article/7a5e2bbadda84e4d8f2b739b50571a23
Publikováno v:
Materials Research, Vol 18, Iss 3, Pp 622-627 (2015)
Low-temperature plasma assisted nitriding is a very promising technique to improve surface mechanical properties of stainless steels, keeping unaltered or even improving their surface corrosion resistance. During treatment, nitrogen diffuses into the
Externí odkaz:
https://doaj.org/article/6e2c75575a924995ad2c1d284810bc8f
Autor:
Aércio Fernando Mendes, Cristiano José Scheuer, Ioanis Labhardt Joanidis, Rodrigo Perito Cardoso, Márcio Mafra, Aloísio Nelmo Klein, Silvio Francisco Brunatto
Publikováno v:
Materials Research, Vol 17, Iss suppl 1, Pp 100-109 (2014)
This work reports experimental results on sintered PIM 316L stainless steel low-temperature plasma nitriding. The effect of treatment temperature and time on process kinetics, microstructure and surface characteristics of the nitrided samples were in
Externí odkaz:
https://doaj.org/article/e5328407a4ab4c6a9997f5af52c3eee7
Autor:
Angela Nardelli Allenstein, Carlos Maurício Lepienski, Augusto José de Almeida Buschinelli, Silvio Francisco Brunatto
Publikováno v:
Materials Research, Vol 13, Iss 4, Pp 557-562 (2010)
This work aims to characterize the phases, thickness, hardness and hardness profiles of the nitride layers formed on the CA-6NM martensitic stainless steel which was plasma nitrided in gas mixtures containing different nitrogen amounts. Nitriding was
Externí odkaz:
https://doaj.org/article/091f3306fadc40a4a9017e185888eacd
Autor:
Brunatto, Silvio Francisco1 (AUTHOR) brunatto@ufpr.br, Cardoso, Rodrigo Perito1,2 (AUTHOR) leonardo.santos.ufpr@gmail.com, Santos, Leonardo Luis1,3 (AUTHOR)
Publikováno v:
Eng. Sep2024, Vol. 5 Issue 3, p1980-1994. 15p.
Autor:
Marcia Maiumi Fukujima, Solange Bernardes Tatani, Alexandre Santos Aguiar, Maria Elisabeth Matta de Rezende Ferraz, Silvio Francisco, Luiz Darcy Ferreira, Cláudia G. Monaco, Juarez Ortiz, João Augusto Costa Lima, Alberto Alain Gabbai, Gilmar Fernandes do Prado
Publikováno v:
Arquivos de Neuro-Psiquiatria, Vol 63, Iss 4, Pp 941-945 (2005)
Cerebral embolism from cardiac source is an important cause of stroke, specially in patients younger than 45 years old. OBJECTIVE: To describe the transesophageal echocardiography (TEE) findings in young and non-young stroke patients without any prio
Externí odkaz:
https://doaj.org/article/bdd50bd93a144b2ca94058b5831b2ccc