@InProceedings{PintoFern:2013:ImIôIm,
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/ibi/8JMKD3MGP7W/3EPDA77",
targetfile = "Jos{\'e} Paulo Rocha Pereira Pinto.pdf",
urlaccessdate = "17 maio 2024"
}