Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
817820 | Composites Part B: Engineering | 2014 | 9 Pages |
Abstract
This paper describes the changes of structure, some mechanical and tribological properties of P/M iron based composites reinforced with ultrafine additives. Nanocrystalline additives of oxides, borides and diamond in the base material allow increasing the compressive strength and the tensile strength 1.5-3 times. An introduction of 0.2-0.3Â wt% of ultrafine-grained diamonds, 0.5Â wt% of chromium borides and 0.2-0.5Â wt% of alumina or oxides mixture provides the best results. The coefficients of friction of MMCs containing nanocrystalline particulates are reduced 2-3 times compared to the base P/M material while the critical seizure pressure is enhanced 2-5 times. The wear resistance of the MMCs increases 2-4 times.
Related Topics
Physical Sciences and Engineering
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Authors
Eugene E. Feldshtein, Larisa N. Dyachkova,