@Article{FernandesUeMeLeReEv:2017:ImCBSa,
               author = "Fernandes, Bruno Bacci and Ueda, M{\'a}rio and Mello, Carina 
                         Barros and Lepienski, Carlos Mauricio and Reuther, Helfried and 
                         Evangelista, S{\'e}rgio Henrique",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Federal do 
                         Paran{\'a} (UFPR)} and {Institute of Ion Beam Physics and 
                         Materials Research} and {Opto Pesquisa e Desenvolvimento S. A}",
                title = "Improvement of CBERS-3 satellite imaging camera components by 
                         plasma immersion ion implantation on SS304",
              journal = "Revista Brasileira de Aplica{\c{c}}{\~o}es de V{\'a}cuo",
                 year = "2017",
               volume = "36",
               number = "2",
                pages = "83--88",
                month = "maio/ago.",
             keywords = "Plasma immersion ion implantation, stainless steel, satellite 
                         components, galling, Implanta{\c{c}}{\~a}o i{\^o}nica por 
                         imers{\~a}o em plasma, a{\c{c}}o inoxid{\'a}vel, componentes de 
                         sat{\'e}lite, esfolamento.",
             abstract = "Camera components made of stainless steel (SS304) and Ti-6Al-4V 
                         alloy are used as anti-vibrator stoppers (pin-pull) for the 
                         focusing imaging system embedded in satellites that are remotely 
                         operated. Vibration tests for the certification China-Brazil Earth 
                         Resources Satellite 3 (CBERS-3) generated galling problems in some 
                         parts of these components. Nitrogen plasma immersion ion 
                         implantation (N-PIII) was an useful technique to enhance the 
                         surface properties of these components and consequently to 
                         overcome such problems. This work shows the characterization of 
                         implanted SS304 samples to explain the surface modifications that 
                         allow the improving of the mentioned components. X-ray diffraction 
                         (XRD) analysis of the samples indicated that N-PIII at 12 kV form 
                         expanded austenite phase with 0.7 micrometers of thickness and 
                         atomic force microscopy (AFM) showed a typical nodular morphology 
                         at the surface. Hardness measurements revealed a significant 
                         increase in the surface hardness after N-PIII treatment. Wear 
                         tests using a pin-on-disc device showed an increase in wear 
                         resistance and a reduction in the friction coefficient. Such 
                         observed surface modifications successfully prevented galling in 
                         the pin-pull camera parts through the reduction of the adhesive 
                         mechanisms. RESUMO: Componentes de c{\^a}meras, feitos de 
                         a{\c{c}}o inoxid{\'a}vel 304 e da liga Ti- 6Al-4V, s{\~a}o 
                         utilizados como travas anti-vibra{\c{c}}{\~a}o para o sistema de 
                         foco de imagem de sat{\'e}lites que s{\~a}o remotamente 
                         operados. Testes de vibra{\c{c}}{\~a}o para a 
                         certifica{\c{c}}{\~a}o do CBERS-3 geraram problemas de 
                         emplastamento em algumas partes dos componentes mencionados. A 
                         implanta{\c{c}}{\~a}o i{\^o}nica de nitrog{\^e}nio foi uma 
                         t{\'e}cnica que possibilitou a melhoria das propriedades 
                         superficiais destes componentes e consequentemente a 
                         supera{\c{c}}{\~a}o dos problemas encontrados. Este trabalho 
                         mostra a caracteriza{\c{c}}{\~a}o das amostras de a{\c{c}}o 
                         inoxid{\'a}vel 304 para explicar as modifica{\c{c}}{\~o}es 
                         superficiais que permitiram a melhoria nos componentes da 
                         c{\^a}mera. A an{\'a}lise de difra{\c{c}}{\~a}o de raios X das 
                         amostras indicou que a implanta{\c{c}}{\~a}o a 12 kV forma a 
                         fase austenita expandida com 0,7 micrometros de espessura, e a 
                         microscopia de for{\c{c}}a at{\^o}mica mostrou que a morfologia 
                         superficial {\'e} nodular. Medi{\c{c}}{\~o}es de dureza 
                         revelaram um aumento siginificativo dessa propriedade ap{\'o}s a 
                         implanta{\c{c}}{\~a}o. Os testes de desgaste do tipo pin-on-disc 
                         mostraram um aumento na resist{\^e}ncia ao desgaste e uma 
                         redu{\c{c}}{\~a}o no coeficiente de atrito. Tais 
                         modifica{\c{c}}{\~o}es superficiais evitaram o esfolamento nas 
                         pe{\c{c}}as da c{\^a}mera atrav{\'e}s da redu{\c{c}}{\~a}o do 
                         desgaste adesivo.",
                  doi = "10.17563/rbav.v36i2.1068",
                  url = "http://dx.doi.org/10.17563/rbav.v36i2.1068",
                 issn = "0101-7659",
             language = "en",
           targetfile = "fernandes_improvement.pdf",
        urlaccessdate = "13 maio 2024"
}