Conclusions
An investigation was carried out into the effect of porosity in the range 2–46% and grain size in the range (5–140)·10−6 m on the mechanical properties of boron carbide. It is shown that the level of mechanical properties of boron carbide produced by hot pressing from powders synthesized from the elements is 1.5 times higher than that of boron carbide produced by other methods. Increasing the porosity of boron carbide to 46% decreases its strength by a factor of six or seven. Increasing the grain size to 140·10−6 m has the same effect. An analysis is made of equations describing the dependence of the mechanical properties of boron carbide on porosity and grain size. The constants of these equations have been determined.
Similar content being viewed by others
Literature cited
I. A. Bairamishvili, G. N. Bakhiya, Sh. A. Loladze, et al., “Investigation of the structure and some properties of high-purity boron carbide,” in: Boron, Its Preparation, Structure, and Properties [in Russian], Moscow (1974), pp. 177–180.
G. I. Postogvard, T. P. Ryzhova, I. T. Ostapenko, et al., “Spectral determination of impurities in pure boron carbide,” Zavod. Lab.,44, No. 9, 1091–1093 (1978).
A. G. Strashinskii, G. K. Khomyakov, N. A. Skakun, et al., “Elemental analysis of boron carbide and its starting components by a proton-excited x-radiation technique,” At. Energ.39, No. 4, 283–285 (1975).
I. T. Ostapenko, V. V. Slezov, R. V. Tarasov, et al., “Densification of boron carbide powder during hot pressing,” Poroshk. Metall., No. 5, 38–43 (1979).
R. A. Andrievskii and A. G. Lanin, Strength of Refractory Compounds [in Russian], Metallurgiya, Moscow (1974).
N. I. Shcherban', “Effect of porosity on the mechanical properties of materials produced by powder metallurgy techniques,” Poroshk. Metall., No. 9, 57–73 (1973).
Author information
Authors and Affiliations
Additional information
Translated from Poroshkovaya Metallurgiya, No. 1(229), pp. 63–67, January, 1982.
Rights and permissions
About this article
Cite this article
Osipov, A.D., Ostapenko, I.T., Slezov, V.V. et al. Effect of porosity and grain size on the mechanical properties of hot-pressed boron carbide. Powder Metall Met Ceram 21, 55–58 (1982). https://doi.org/10.1007/BF00791728
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00791728