Effect of alumina diluent on the fabrication of in-situ Al2O3-Ti/ZrB2 composite by self propagating high temperature synthesis dynamic compaction |
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| Authors: | S. K. Mishra P. K. P. Rupa S. K. Das V. Shcherbakov |
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| Affiliation: | (1) the National Metallurgical Laboratory, 831007 Jamshedpur, India;(2) the Institute of Mackrokinetics and Materials Science, Russian Academy of Sciences (ISMAN), Chernogolovka, Russia |
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| Abstract: | A detailed investigation of the effect of alumina diluent on the Al2O3-TiB2/ZrB2 composite by self propagating high temperature synthesis (SHS) dynamic compaction was carried out. A dense composite could be obtained and microstructure could be tailored and controlled by adding alumina as diluent during the SHS reaction. The microhardness values decreased for 5 and 10 wt pct additions of alumna but increased for 15 and 20 wt pct additions. Hardness is influenced by the different phases present and the grain size. |
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