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@InProceedings{PintoFern:2013:ImI˘Im,
               author = "Pinto, Jos{\'e} Paulo Rocha Pereira and Fernandes, Bruno Bacci",
          affiliation = "{} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Implanta{\c{c}}{\~a}o i{\^o}nica por imers{\~a}o em plasma de 
                         ligas Ti-Si-B",
            booktitle = "Anais...",
                 year = "2013",
         organization = "Semin{\'a}rio de Inicia{\c{c}}{\~a}o Cient{\'{\i}}fica do 
                         INPE (SICINPE).",
            publisher = "INPE",
              address = "S{\~a}o Jos{\'e} dos Campos",
                 note = "{Bolsa PIBIC/INPE/CNPq}",
             keywords = "moagem de alta energia, implanta{\c{c}}{\~a}o i{\^o}nica por 
                         imers{\~a}o em plasma, resist{\^e}ncia {\`a} corros{\~a}o, 
                         plasma de microondas, tribologia, high energy ball milling, plasma 
                         immersion ion implantation, corrosion resistance, microwave 
                         plasma, tribology.",
             abstract = "Embora as ligas de tit{\^a}nio possuam boas propriedades 
                         mec{\^a}nicas e excelentes resist{\^e}ncias {\`a} 
                         corros{\~a}o, estes materiais apresentam propriedades 
                         tribol{\'o}gicas insuficientes para aplica{\c{c}}{\~o}es que 
                         exigem resist{\^e}ncia ao desgaste. A fim de produzir 
                         superf{\'{\i}}cies resistentes ao desgaste, este trabalho tem 
                         como objetivo a melhoria das caracter{\'{\i}}sticas 
                         tribol{\'o}gicas de ligas Ti-Si-B por meio de 
                         implanta{\c{c}}{\~a}o i{\^o}nica por imers{\~a}o em plasma de 
                         nitrog{\^e}nio em temperaturas elevadas (3IPAT-N). Estas ligas 
                         foram produzidas pela metalurgia do p{\'o} usando processos de 
                         moagem de alta energia e sinteriza{\c{c}}{\~a}o. Suas 
                         microestruturas e composi{\c{c}}{\~o}es foram estudadas por meio 
                         de microscopia eletr{\^o}nica de varredura (MEV), espectroscopia 
                         de energia dispersiva (EDS) e difra{\c{c}}{\~a}o de raios X 
                         (DRX). Ensaios de desgaste foram realizados com um trib{\^o}metro 
                         tipo ball-on-disc para avaliar o coeficiente de atrito e a taxa de 
                         desgaste em amostras tratadas e n{\~a}o tratadas. As larguras das 
                         trilhas foram medidas por um microsc{\'o}pio {\'o}tico e 
                         analisadas por microscopia eletr{\^o}nica de varredura para 
                         determinar os mecanismos de desgaste. Apenas as ligas sinterizadas 
                         sem tratamento por 3IP foram analisadas at{\'e} o momento. Ligas 
                         comerciais Ti-6Al-4V tamb{\'e}m foram tratadas por 3IP para 
                         ajudarem em an{\'a}lises comparativas. Neste trabalho tamb{\'e}m 
                         foram iniciadas atividades de pesquisa com plasma de microondas. 
                         ABSTRACT: While titanium alloys have good mechanical properties 
                         and excellent corrosion resistance, these materials have 
                         insufficient tribological properties for applications requiring 
                         wear resistance. In order to produce wear resistant surfaces, this 
                         work aims to improve the tribological characteristics of Ti-Si-B 
                         by means of plasma immersion ion implantation of nitrogen at high 
                         temperatures (HTPIII-N). These alloys were produced by powder 
                         metallurgy processes using high energy ball milling and sintering. 
                         Their compositions and microstructures were studied by means of 
                         scanning electron microscopy (SEM), energy dispersive spectroscopy 
                         (EDS) and X-ray diffraction (XRD). Wear tests were performed with 
                         a ball-on-disc tribometer to evaluate the friction coefficient and 
                         wear rate in treated and untreated samples. Track widths were 
                         measured by an optical microscope and analyzed by scanning 
                         electron microscopy to determine the wear mechanisms. Only 
                         untreated Ti-Si-B alloys were analyzed at the moment. Commercial 
                         Ti-6Al-4V alloys were also treated by HTPIII-N to assist in 
                         comparative analysis. It was also initiated research activities 
                         with microwave plasma in the present work.",
  conference-location = "S{\~a}o Jos{\'e} dos Campos",
      conference-year = "30 e 31 de julho de 2013",
           copyholder = "SID/SCD",
             language = "pt",
                  ibi = "8JMKD3MGP7W/3EPDA77",
                  url = "http://urlib.net/rep/8JMKD3MGP7W/3EPDA77",
           targetfile = "Jos{\'e} Paulo Rocha Pereira Pinto.pdf",
        urlaccessdate = "22 jan. 2021"
}


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