ELASTIC-MODULUS OF HIGHLY POROUS NICKEL-BASED MATERIALS

The results of experimental and theoretical investigations of the stru ctural sensitivity of the elastic modulus of powders biporous nickel a re reported. The previously proposed theoretical dependence of the ela stic modulus of a biporous system an structural parameters has been ve rified. It is shown that the elastic characteristics of biporous mater ials can be varied over a wide range if the parameters theta(micr), th eta(macr), and lambda (the particle size ratio of the pore-forming age nt and the powder) are varied The values of those parameters to some d egree also affect the mechanical behavior of biporous nickel near the porosity limit theta(c). If lambda and theta(macr)/theta(micr) increas e while the integrated porosity remains constant the elastic modulus a nd the porosity limit rise.