Zobrazeno 1 - 10 of 10 pro vyhledávání: '"Giovanni Rocha dos Santos"'
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Akademický článek
Metallurgical response of an AISI 4140 steel to different plasma nitriding gas mixtures
Autor: Adão Felipe Oliveira Skonieski, Giovanni Rocha dos Santos, Thomas Karl Hirsch, Alexandre da Silva Rocha
Publikováno v: Materials Research, Vol 16, Iss 4, Pp 884-890 (2013)
Plasma nitriding is a surface modification process that uses glow discharge to diffuse nitrogen atoms into the metallic matrix of different materials. Among the many possible parameters of the process, the gas mixture composition plays an important r
Externí odkaz: https://doaj.org/article/5b51002ea71a47a3a7931c5d81905ad0
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2
Investigation on Different TiCn Duplex Treatments Applied to Cold Work Tool Steel for Surface Properties Improvement
Autor: Alexandre da Silva Rocha, Giovanni Rocha dos Santos, Vinicius Waechter Dias, Roberto Hübler, Ricardo D. Torres, Luciano Kempski
Publikováno v: Journal of Materials Engineering and Performance. 30:4445-4457
In this work, different plasma nitriding and coating thickness combinations were tested to improve surface proprieties of a cold work tool steel. A DIN X100CrMoV8-1-1 cold work tool steel was plasma nitrided, using a 5 vol-%. N2 + 95 vol-% H2 gas mix
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::351c96afb1b933598a746c571cadd7c0
https://doi.org/10.1007/s11665-021-05713-4
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3
Comparison of surface properties modification by direct and active screen plasma nitriding of an ASTM M2 high-speed steel in a nitrogen rich gas mixture
Autor: Leonardo Fonseca Oliveira, Giovanni Rocha dos Santos, Alexandre da Silva Rocha
Publikováno v: Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
A técnica de nitretação com tela ativa vem sendo estudada nos últimos anos como uma maneira de otimizar propriedades superficiais de componentes de aço, evitando os efeitos negativos provocados nos tratamentos a plasma convencionais de corrente
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::795c0d5ec02066e3db3977adcb9a2709
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4
The Influence of Surface Condition on the Electrochemical Properties of ASTM F138 Steel for Biomedical Applications
Autor: Jane Zoppas Ferreira, Rodrigo Costa, Mario Wolfart Junior, Fernando Marques, Giovanni Rocha dos Santos, Alexandre da Silva Rocha
Publikováno v: Materials Research v.24 n.3 2021
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research
Materials Research, Volume: 24, Issue: 3, Article number: e20200062, Published: 19 MAR 2021
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
The aim of this paper was to determine the influence of machining parameters on the surface layer, and consequently on the electrochemical properties, of ASTM F138 austenitic stainless steels. Eight different surface conditions were generated in cyli
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41dd0541445bdc91fed894e2992399cf
https://doi.org/10.1590/1980-5373-mr-2020-0062
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5
Wear study of hot forging punches coated with WC-CoCr and Cr3C2-NiCr through high-velocity oxygen fuel (HVOF) process
Autor: Luana De Lucca de Costa, Giovanni Rocha dos Santos, Angela Selau Marques, Alexandre da Silva Rocha
Publikováno v: The International Journal of Advanced Manufacturing Technology. 100:3-11
Wear is the main factor that causes most of the failures and reduces the lifetime of forming tools. The demand from industrial users for lower costs, higher productivity, and better quality is among the justifications for researching methods to incre
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::12bd0c443400606da3c609b30b57a405
https://doi.org/10.1007/s00170-018-2693-3
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7
An investigation on the suitability of different surface treatments applied to a DIN X100CrMoV8-1-1 for cold forming applications
Autor: Alexandre da Silva Rocha, Giovanni Rocha dos Santos, Thomas Hirsch, Guilherme Brandes Both
Publikováno v: Surface and Coatings Technology. 244:142-150
In this work DIN X100CrMoV8-1-1 cold work tool steel samples were plasma nitrided and coated with two different films TiCN and AlCrN by plasma-assisted physical vapor deposition with cathodic arc evaporation method. The samples were characterized con
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::18f9b23e9e76f5c949d47c4955980c3b
https://doi.org/10.1016/j.surfcoat.2014.01.060
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8
Characterization of DLC thin film and evaluation of machining forces using coated inserts in turning of Al–Si alloys
Autor: Ricardo D. Torres, Fred Lacerda Amorim, Dalberto Dias da Costa, Giovanni Rocha dos Santos
Publikováno v: Surface and Coatings Technology. 202:1029-1033
A diamond-like carbon (DLC) thin film was deposited on cemented carbide cutting tool substrate by PECVD technique. In the first part of this research work a DLC thin film characterization was carried out. It was determined the following important cha
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c45f84290e6cdf09847b6e695170b53d
https://doi.org/10.1016/j.surfcoat.2007.07.100
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10
Metallurgical response of an AISI 4140 steel to different plasma nitriding gas mixtures
Autor: Giovanni Rocha dos Santos, Adão Felipe Oliveira Skonieski, Thomas Hirsch, Alexandre da Silva Rocha
Publikováno v: Materials Research v.16 n.4 2013
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Iss ahead, p 0 (2013)
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
Materials Research, Vol 16, Iss 4, Pp 884-890 (2013)
Materials Research, Volume: 16, Issue: 4, Pages: 884-890, Published: 21 MAY 2013
Plasma nitriding is a surface modification process that uses glow discharge to diffuse nitrogen atoms into the metallic matrix of different materials. Among the many possible parameters of the process, the gas mixture composition plays an important r
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a43881e6b9e0186adc8cb7ce79887e7
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000400027
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