Open AccessFabrication of Ni-NiO Foams by Powder Metallurgy Technique and Study of Bulk Crushing Strength
Author(s) -
Bappi Sarker,
Asma Rahman,
Md. Mizanur Rahman,
Md. Saiful Islam
Publication year - 2021
Publication title -
trends in sciences
Language(s) - English
Resource type - Journals
ISSN - 2774-0226
DOI - 10.48048/tis.2021.683
Subject(s) - non blocking i/o , materials science , sintering , porosity , powder metallurgy , crystallite , nickel oxide , composite material , fabrication , nickel , metallurgy , medicine , biochemistry , chemistry , alternative medicine , pathology , catalysis
Despite the importance of Nickel Oxide (NiO) in diverse functional applications, very little information is available on the mechanical properties of bulk or porous NiO or, mostly unnoticed. In this study, porous Ni-NiO foam was synthesized using space holding-powder metallurgy and sintering methods to produce opened-cell structure with macrogravel and Neolamarckia cadamba (Cadamba flower) like surface morphology. Four different types of porous Ni-NiO with different pore diameter of 35.65 ± 12.77, 36.10 ± 8.85, 68.20 ±7.36 and 62.45 ± 17.48 µm were fabricated for evaluating the effect of porosity on the mechanical properties of bulk porous Ni-NiO foam. The mechanical properties such as bulk crushing force of as synthesized Ni-NiO foam with various porosities such as 20.55, 27.35, 27.85 and 28.82 % exhibited the average crushing load of 115.40, 39.95, 138.10 and 151.20 N, respectively. This study suggests that crushing load of Ni-NiO foam is not only depending on the porosity but also on the sintering temperature and crystallite sizes of NiO.HIGHLIGHTSNi-NiO foam is synthesized using space holding-powder metallurgy and sintering methodsDifferent pore diameter is fabricated for evaluating the effect of porosity on the mechanical properties of bulk porous Ni-NiO foamCrushing strength of Ni-NiO foam is not only depending on the porosity but also on the sintering temperature and crystallite sizes of NiOGRAPHICAL ABSTRACT