The influence of the microstructure upon corrosion resistance of an Al-10wt% Si-5wt%Cu alloy
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2016
Autores IPEN
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BRAZILIAN MRS MEETING, 15th
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Resumo
The need of the industries achieves better specific properties of materials, make
to develop studies to meet this demand. For the automotive industry the most
interesting properties are low specific weight, low coefficient of thermal
expansion, wear resistance at high temperatures and high corrosion resistance. In
this context, new materials have been considered, in particular AlSiCu alloys. [1,
2]. In general, the corrosion behavior strongly depends on the structural
morphology and chemical composition [3]. In this work, an Al-10wt%Si-5wt%Cu
alloy was solidified under upward unsteady state heat flow conditions. Heat was
directionally extracted only through a water-cooled bottom made of steel (SAE
1020). The aim of the present work is to investigate the influence of the
microstructure of this alloy upon corrosion resistance. Experimental results
include primary dendrite arm spacing (l1) and capacitances values (ZCPE). The
corrosion behavior was analysed by electrochemical impedance spectroscopy
technique conducted in a 3% NaCl solution at room temperature. Coarser
dendritic structures tend to improve the corrosion resistance of an
Al-10wt%Si-5wt%Cu alloy.
Como referenciar
RIBEIRO, ALEXANDRE N.; SANTOS, GIVANILDO A. dos; NAKAMOTO, FRANCISCO Y.; KALLAS, CLAUDETE; COUTO, ANTONIO A.; MELO, HERCILIO G. de; HERNANDEZ, ROCIO D.P.B. The influence of the microstructure upon corrosion resistance of an Al-10wt% Si-5wt%Cu alloy. In: BRAZILIAN MRS MEETING, 15th, September 25-29, 2016, Campinas, SP. Abstract... São Carlos, SP: Aptor Software, 2016. p. 1060-1061. Disponível em: http://repositorio.ipen.br/handle/123456789/28078. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.