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https://hdl.handle.net/10316/113009
Title: | Development and Mechanical Characterization of Ni-Cr Alloy Foam Using Ultrasonic-Assisted Electroplating Coating Technique | Authors: | Pittala, Raj Kumar Sharma, Priyaranjan Anne, Gajanan Patil, Sachinkumar Varghese, Vinay Das, Sudhansu Ranjan Kumar, Ch Sateesh Fernandes, Filipe |
Keywords: | Ni-Cr alloy foam; electroless nickel plating; ultrasonic-assisted; chromizing; porosity | Issue Date: | 2023 | Publisher: | MDPI | Project: | UIDB/00285/2020 LA/P/0112/2020 Maria Zambrano grants from the Spanish government Grant PID2019-109340RB-I00 funded by MCIN/AEI/10.13039/501100011033 |
Serial title, monograph or event: | Coatings | Volume: | 13 | Issue: | 6 | Abstract: | 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. | URI: | https://hdl.handle.net/10316/113009 | ISSN: | 2079-6412 | DOI: | 10.3390/coatings13061002 | Rights: | openAccess |
Appears in Collections: | FCTUC Eng.Mecânica - Artigos em Revistas Internacionais |
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