Journal ArticleDOI
The structure and properties of porous nickel plaques
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In this article, the structure of porous nickel plaques produced by the following routes has been examined using scanning electron microscopy: (a) pressureless sintering of nickel powder; (b) slurry sintered of powder, (c) roll-compaction and sinting of powder; and (d) pyrolysis of cloth impregnated with nickel chloride.Abstract:
The structure of porous nickel plaques produced by the following routes has been examined using scanning electron microscopy: (a) pressure-less sintering of nickel powder; (b) slurry sintering of powder; (c) roll-compaction and sintering of powder; (d) pyrolysis of cloth impregnated with nickel chloride. The observations show that measurements of pore-size distribution with a mercury porosimeter can be misleading, and also reveal the existence of fine closed porosity in plaques made from impregnated cloth. The relation of the observed porosity characteristics and inter-particle bond diameters to the mechanical and electrical properties of the plaques is discussed.read more
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Journal ArticleDOI
Thematic bibliography of mercury porosimetry
S. Modrý,M. Svatá,J. Van Brakel +2 more
Journal ArticleDOI
Quantitative Depth Profiling of Biporous Nickel Electrodes by Frequency-Domain Laser-Induced Photoacoustic Spectroscopy
Andreas Mandelis,J. Lymer +1 more
TL;DR: In this article, the authors used a He-Ne laser exciting beam to probe commercially available, powdered and pressed nickel electrodes with dual-porosity profiles and found that these electrodes behave photoacoustically approximately like a simple continuous composite-layer solid.
Journal ArticleDOI
Properties of high-porosity metals
TL;DR: In this article, a combination of such properties as low density, high permeability to gases and liquids, good filtering ability, a large open surface, ability to retain liquids by capillary action, and low electrical and thermal conductivities is presented.
Journal ArticleDOI
Effect of pore-forming additions on some characteristics of sintered permeable nickel materials with a “bidisperse” structure
F. G. Gutman,V. S. Vas'kovskii +1 more
TL;DR: For a porous material with a bidisperse structure, the conditions bringing about the opening of the structure depend primarily on the amount of the pore-forming addition as mentioned in this paper, which is determined mainly by the total porosity.