Effect of preparation conditions on relative elongation of nickel foam

Abstract

The effect of preparation conditions on the relative elongation of nickel foams prepared by electrodeposition technology has been studied. The relative elongation is hardly in uenced by sintering in NH 3 decomposition atmosphere at 980°C for 40 min, by burning in air at 600°C for 4 min beforehand, or by lowering the sintering temperature to 850°C. With regard to conductive treatment, the relative elongation is signi cantly higher for chemically plated Ni than for coating by graphite base conductive colloid.MST/5661

Prediction of Young's modulus and Poisson ratio for foamed metals using octahedron model

“…The mechanical behaviour for the foamed materials is significantly important for the engineering application, and a lot of work has been performed to characterise the mechanical properties for foamed metals. 1,[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] In the present paper, the Young's modulus and the Poisson ratio for foamed metals were investigated based on the studies of Liu 15,26 about the unaxial tensile property for foamed metals.…”

Special review: Mechanical investigation on failure modes of reticular porous metal foams under different loadings in engineering applications

“…Porous materials can be widely applied in a number of engineering fields, involving separation, filtration, heat exchange, biological transplanting, electrochemical process and lightweight structures (Liu and Ma, 2020; Yusuf and Jha, 2018; Liu and Chen, 2014; Atwater et al , 2018), with the reticular metal foam (Plate 1) as a quite representative example (Liu and Ma, 2020; Atwater et al , 2018; August et al , 2016; Chen et al , 2018). In order to use these materials more effectively and reasonably, the research on their mechanical properties has aroused extensive interests (Gibson and Ashby, 1999; Xiao et al , 2015; Jung and Diebels, 2017; Huang et al , 2008, 2012; Benedik et al , 2010; Aly, 2010a, b; Soni and Biswas, 2018; Zhou et al , 2014; Tang et al , 2014; Palka et al , 2016; Wu et al , 2019; Schueler et al , 2013; Pang et al , 2011; Cho et al , 2019; Kaya and Fleck, 2014; Yang et al , 2019; Shi et al , 2017), and the present authors have also done some relevant works (Liu and Ma, 2020; Liu, 2000, 2004a, b, c, 2006, 2007, 2010a, b, c, 2011; Liu et al , 2003, 1999a, 2001a, b, 2009, 2011; Liu and Chen, 2009; Liu and Du, 2011, 2012). The published researches on the failure mode are mainly focused on metal foams under uniaxial tension and compression, while quite rare on that under other loading forms.…”

Macroscopic fracture behavior of nickel foam under tension

“…The dense nickel plate used for comparison has the thickness of 1 mm and the purity of 99.5 percent. Both the nickel foam plate and the dense nickel plate are processed into specimens with dumbbell shape (see Figure 1(b)) for the tensile test (Babjak et al, 1990;Liu, 2004a).…”