Nachiappan, Chidambaram ; Rangaraj, Lingappa ; Divakar, Canchi ; Jayaram, Vikram (2010) Synthesis and densification of monolithic zirconium carbide by reactive hot pressing Journal of the American Ceramic Society, 93 (5). pp. 1341-1346. ISSN 0002-7820
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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1551-...
Related URL: http://dx.doi.org/10.1111/j.1551-2916.2010.03608.x
Abstract
Synthesis and densification of monolithic zirconium carbide (ZrC) has been carried out by reactive hot pressing of zirconium (Zr) and graphite (C) powders in the molar ratios 1:1, 1.25:1, 1.5:1, and 2:1 at 40 MPa, 1200°-1600°C. Monolithic ZrC could be synthesized with a C/Zr ratio ~0.5-1.0 and the post heat-treated samples have the lattice parameter in the range 4.665 to 4.698 Å. Densification improves with an increasing deviation from the stoichiometry. Fine-grained (~1 μm) and nearly fully dense material (99% RD) could be obtained at a temperature as low as 1200°C with C/Zr ~0.67. Microstructural and XRD observations suggest that densification occurred at low temperatures with nonstoichiometric Zr-C powder mixtures.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Ceramic Society. |
| ID Code: | 13680 |
| Deposited On: | 12 Nov 2010 15:07 |
| Last Modified: | 18 Feb 2011 08:49 |
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