Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Hercílio Gomes de Melo"'
Autor:
José Wilmar Calderón-Hernández, Daniela Passarelo Moura da Fonseca, Oscar M. Prada-Ramirez, Duberney Hincapie-Ladino, Hercílio Gomes de Melo, Angelo Fernando Padilha
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 3112-3121 (2024)
Maraging steels are one of the highest strength steels commercially available. The new versions are known as ultra-high strength maraging (UHSM) steels and can offer yield strength values over 3 GPa. The aim of this investigation was evaluating the e
Externí odkaz:
https://doaj.org/article/a69dbd7b97c8431e947d1a1609fa4e01
Autor:
Juan David Santos Martinez, Duberney H. Ladino, José Wilmar Calderón Hernández, Neusa A. Falleiros, Hercílio Gomes de Melo
Publikováno v:
Journal of Materials Research and Technology, Vol 27, Iss , Pp 8415- (2023)
Externí odkaz:
https://doaj.org/article/46b1088b03f1458a8805b1cabf5659c8
Autor:
Juan David Santos Martinez, Duberney H. Ladino, José Wilmar Calderón Hernández, Neusa A. Falleiros, Hercílio Gomes de Melo
Publikováno v:
Journal of Materials Research and Technology, Vol 18, Iss , Pp 3198-3214 (2022)
API 5L X65 microalloyed steels are extensively used for oil and gas transportation. In many cases, reserves of such resources contain H2S, constituting what is called a sour medium, at which hydrogen-induced failures are critical. Even though essenti
Externí odkaz:
https://doaj.org/article/fd5e66a58942434490927f52c92e2137
Autor:
Fernando Santos da Silva, Hercílio Gomes de Melo, Assis Vicente Benedetti, Patrícia Hatsue Suegama
Publikováno v:
Eclética Química, Vol 44, Iss 4, Pp 27-56 (2019)
In this work, the influence of ceric ions (Ce(SO4)2) addition to the hydrolysis solution on the corrosion protection afforded by organic-inorganic hybrid coating obtained from tetraethoxysilane (TEOS) and 3-methacryloxy-propyl-trimethoxysilane (MPTS)
Externí odkaz:
https://doaj.org/article/95aa20bcd12e45c1b67f50a24cb04dda
Autor:
Renan Esposito Vieira, Marina Martins Mennucci, Valdecir Angelo Quarcioni, Hercílio Gomes de Melo
Publikováno v:
Revista IBRACON de Estruturas e Materiais, Vol 14, Iss 2 (2021)
Abstract There is an interest in the cement industry in the use of steel slags in cement, but chemical and/or pyrometallurgical modifications are necessary to reduce the free CaO, MgO, and iron contents. However, the potential effects of its applicat
Externí odkaz:
https://doaj.org/article/554a9994a83f4b8185d869fe3f7fb5c8
Autor:
Fernanda Martins Queiroz, Maysa Terada, Aline F. Santos Bugarin, Hercílio Gomes de Melo, Isolda Costa
Publikováno v:
Metals, Vol 11, Iss 6, p 980 (2021)
The 2XXX Al alloys are characterized by their superior mechanical properties resulting from alloying elements and precipitation hardening treatments. The AA2524-T3 alloy was developed to replace the AA2024-T3 alloy in the aerospace industry. However,
Externí odkaz:
https://doaj.org/article/9dcb85d3462d48eeadec9ffa5582400e
Autor:
André de Mendonça Santos, Thassia Felix de Almeida, Fernando Cotting, Idalina Vieira Aoki, Hercílio Gomes de Melo, Vera Rosa Capelossi
Publikováno v:
Materials Research, Vol 20, Iss suppl 2, Pp 492-505 (2017)
The inhibition effect of castor bark powder obtained from Ricinus communis on AISI 1020 carbon steel in acidic media (HCl 0.5 mol.L-1) has been studied by electrochemical impedance spectroscopy (EIS), polarization curves, scanning vibrating electrode
Externí odkaz:
https://doaj.org/article/44563fed9ed24757adc414b736b1c5fb
Autor:
Janeth Marlene Quispe-Avilés, Duberney Hincapie-Ladino, Neusa Alonso Falleiros, Hercílio Gomes de Melo
Publikováno v:
Materials Research, Vol 22, Iss 1 (2019)
High strength low alloy (HSLA) steels are used for the construction of pipelines for oil and natural gas transportation. For such applications pipelines must exhibit mechanical resistance and resistance to corrosion and hydrogen induced cracking (HIC
Externí odkaz:
https://doaj.org/article/8e395ccf91dd46f5953446d3a935dd8f
Autor:
Lhaira Souza Barreto, Miriam Sanae Tokumoto, Isabel Correia Guedes, Hercílio Gomes de Melo, Franco Amado, Vera Rosa Capelossi
Publikováno v:
Materials Research, Vol 21, Iss 1 (2017)
Corrosion represents high losses to the economy, therefore, researches on the minimization of its damages in materials, mainly the metallic ones, are necessary. Among the various alternatives of protection against corrosion, there is the application
Externí odkaz:
https://doaj.org/article/898455021c5945e9a5b9b5259616c87b
Publikováno v:
Materials Research, Vol 10, Iss 4, Pp 399-406 (2007)
Cerium conversion layers and silane films are among the potential substitutes for the carcinogenic chromate conversion layers used to protect high-strength Al alloys. In the present work the adhesion of a cerium conversion layer and of a silane film
Externí odkaz:
https://doaj.org/article/c957d3447e97422ca6a3adf49a493be9