Zobrazeno 1 - 7
of 7
pro vyhledávání: '"José Hélio Duvaizem"'
Autor:
Hidetoshi Takiishi, Ana Helena A. Bressiani, Julio César Serafim Casini, N.M.F. Mendes, José Hélio Duvaizem
Publikováno v:
Materials Science Forum. 802:457-461
Ti-13Nb-13Zr alloy produced via powder metallurgy was submitted to heat treatment under various conditions and the effects on microstructure and elastic modulus were investigated. Heat treatment was performed using temperatures above and below α/β
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6786aa562bea551a078db40bf1921b01
https://doi.org/10.4028/www.scientific.net/msf.802.457
https://doi.org/10.4028/www.scientific.net/msf.802.457
Autor:
José Hélio Duvaizem, Luzinete Pereira Barbosa, Hidetoshi Takiishi, Ana Helena A. Bressiani, A.M. Fajardo
Publikováno v:
Materials Science Forum. :102-107
In this present work Ti-13Nb-13Zr alloy was produced by PM using planetary ball mill with zirconium oxide grinding bowl and balls to reduce contamination. The effect of milling time upon microstructure and microhardness was studied. Powders have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e421ae7644e64e8e4ac3cc17f82a26a
https://doi.org/10.4028/www.scientific.net/msf.727-728.102
https://doi.org/10.4028/www.scientific.net/msf.727-728.102
Autor:
Hidetoshi Takiishi, Ana Helena A. Bressiani, Gabriel Souza Galdino, José Hélio Duvaizem, Rubens Nunes de Faria Jr.
Publikováno v:
Materials Science Forum. :176-181
The effects of the hydrogenation stage on microstructure and mechanical properties of Ti-13Nb-13Zr alloy produced by powder metallurgy have been studied. Powder alloys have been produced by hydrogenation with 250 MPa or 1 GPa and via high energy plan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2446f1622a5a9b6be20c4eeef42e4e79
https://doi.org/10.4028/www.scientific.net/msf.660-661.176
https://doi.org/10.4028/www.scientific.net/msf.660-661.176
Publikováno v:
Materials Science Forum. :308-313
The first goal of this work involved the study of HDDR powders obtained from annealed alloys with the general formula: PrxFe77.9-xCo16B6Nb0.1 (x = 12; 12.5; 13; 13.5 and 14). The alloys were processed at desorption / recombination temperature of 840
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::621912dc17ba2cd0bdb7d670a6b4bd60
https://doi.org/10.4028/www.scientific.net/msf.660-661.308
https://doi.org/10.4028/www.scientific.net/msf.660-661.308
Autor:
Rubens Nunes de Faria Jr., Luis Gallego Martinez, S.C. Silva, Hidetoshi Takiishi, Marcos Tadeu D'Azeredo Orlando, José Hélio Duvaizem
Publikováno v:
Materials Science Forum. :42-47
Fine magnetic powder has been produced using the hydrogenation disproportionation desorption and recombination (HDDR) process. The first goal of this work involved an investigation of a range of disproportionation/desorption temperatures between 800
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ae7fd031f05dc7e217823f7483ef8d0
https://doi.org/10.4028/www.scientific.net/msf.591-593.42
https://doi.org/10.4028/www.scientific.net/msf.591-593.42
Autor:
José Hélio Duvaizem
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP
Repositório Institucional do IPEN
Instituto de Pesquisas Energéticas e Nucleares (IPEN)
instacron:IPEN
Universidade de São Paulo (USP)
instacron:USP
Repositório Institucional do IPEN
Instituto de Pesquisas Energéticas e Nucleares (IPEN)
instacron:IPEN
O hidrogênio vem sendo muito utilizado como agente pulverizador de ligas à base de terras raras e metais de transição devido à sua taxa de difusão ser extremamente alta mesmo em baixas temperaturas. Tais materiais são utilizados em dispositivo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3169325868e2ea4a8d1b54fba7293a39
Autor:
José Helio Duvaizem
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.
Biomateriais para uso em implantes devem exibir propriedades como biocompatibilidade, biofuncionalidade e resistência à corrosão. O uso do titânio e suas ligas em aplicações biomédicas vem continuamente aumentando devido à sua maior taxa resi