Elastic modulus of highly porous nickel-based materials

The results of experimental and theoretical investigations of the structural sensitivity of the elastic modulus of powders biporous nickel are reported. The previously proposed theoretical dependence of the elastic modulus of a biporous system on structural parameters has been verified. It is shown...

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Bibliographic Details
Published in:Powder metallurgy and metal ceramics 1997-03, Vol.36 (3-4), p.203-206
Main Authors: Podrezov, YuN, Lugovoi, NI, Kostornov, A G, Lunin, LE, Markhasev, B I, Shtyka, L G
Format: Article
Language:English
Subjects:
Cermets
Elastic modulus
Modulus of elasticity
Nickel
Particle size
Porosity
Porous materials
Powder metallurgy
Studies
Systems (metallurgical)
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Summary:The results of experimental and theoretical investigations of the structural sensitivity of the elastic modulus of powders biporous nickel are reported. The previously proposed theoretical dependence of the elastic modulus of a biporous system on structural parameters has been verified. It is shown that the elastic characteristics of biporous materials can be varied over a wide range if the parameters [thetas] sub(micr) [thetas] sub(macr) and lambda (the particle size ratio of the pore-forming agent and the powder) are varied. The values of those parameters to some degree also affect the mechanical behavior of biporous nickel near the porosity limit [thetas] sub(c). If lambda and [thetas] sub(macr)/[thetas] sub(micr) increase while the integrated porosity remains constant the elastic modulus and the porosity limit rise.
ISSN:1068-1302
1573-9066
DOI:10.1007/BF02676091