Revestimento cerâmico aplicado como barreira térmica em componentes automotivos
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Tipo
Dissertação
Data de publicação
2018-06-07
Periódico
Citações (Scopus)
Autores
Moraes, Denison Angelotti
Orientador
Munhoz Junior, Antônio Hortêncio
Título da Revista
ISSN da Revista
Título de Volume
Membros da banca
Miranda, Leila Figueiredo de
Valenzuela Diaz, Francisco Rolando
Valenzuela Diaz, Francisco Rolando
Programa
Engenharia de Materiais
Resumo
Automotive components are always in development, aiming to improve performance and
quality, either by reducing costs, market need, increased sales and productivity or some new
environmental or safety legislation. In the last years the environmental theme has gained interest
and has become central to vehicles that use fossil fuels, especially Diesel oil, and must comply
with new emission laws. For this, new engines and exhaust systems and gas filtration have been
developed, such as catalytic converters. The upcoming legislation, called PROCONVE P8,
restricts the values of nitrous oxides (NOx) and particulate matter to very low values. In order
to achieve these values, the post-treatment system called the ATS (After Treatment System)
was developed. In order for the process to reduce pollutants to be made within the ATS, the
exhaust gases burned in the combustion process inside the engine must be between 450 and 550
ºC. The burned gases, or exhaust gases, are piped to the catalyst by metal tubing. In this work
was proposed the use of 8% by weight (ZrO2-Y2O3) stabilized Zirconia oxide ceramic, known
as YSZ (Ytria Stabilized Zirconia), or 8YSZ, known as TBC (Thermal Barrier Coating). The
TBC was studied as a coating of exhaust pipe, through analytical calculation and CFD
(Computer Fluid Dynamics). The results showed that the YSZ is a potential material for the
studied application, as well as for applications where the thermal barrier theme is relevant.
Descrição
Palavras-chave
componentes automotivos , legislações de emissão , sistema de póstratamento , gases de exaustão , ZrO2-Y2O3 , barreira térmica
Assuntos Scopus
Citação
MORAES, Denison Angelotti. Revestimento cerâmico aplicado como barreira térmica em componentes automotivos. 2018. 93 p. Dissertação( Engenharia de Materiais) - Universidade Presbiteriana Mackenzie, São Paulo.