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Publicação
Development and Mechanical Characterization of Ni-Cr Alloy Foam Using Ultrasonic-Assisted Electroplating Coating Technique
Orientador(es)
Resumo(s)
Metal foams and alloy foams are a novel class of engineering materials and have numerous
applications because of their properties such as high energy absorption, light weight and high
compressive strength. In the present study, the methodology adopted to develop a Ni-Cr alloy
foam is discussed. Polyurethane (PU) foam of 40PPI (parts per inch) pore density was used as
the precursor and coating techniques such as electroless nickel plating (ELN), ultrasonic-assisted
electroplating of nickel (UAEPN), and pack cementation or chromizing were used to develop the
Ni-Cr alloy foam. The surface morphology, strut thickness and minimum weight gain after each
coating stage were evaluated. It was observed from the results that the adopted coating techniques
did not damage the original ligament cross-section of the PU precursor. The minimum weight
gain and the coating thickness after the UAEPN process were observed to be 42 g and 40–60 m,
respectively. The properties such as porosity percentage, permeability and compressive strength
were evaluated. Finally, the pressure drop through the developed foam was estimated and verified to
determine whether the developed foam can be used for filtering applications.
Descrição
Palavras-chave
Ni-Cr alloy foam electroless nickel plating ultrasonic-assisted chromizing; porosity
Contexto Educativo
Citação
Pittala, R.K.; Sharma, P.; Anne, G.; Patil, S.; Varghese, V.; Das, S.R.; Kumar, C.S.; Fernandes, F. Development and Mechanical Characterization of Ni-Cr Alloy Foam Using Ultrasonic-Assisted Electroplating Coating Technique. Coatings 2023, 13, 1002.