B. Derby—contributing editor
Effect of Laser Sintering on Ti–ZrB2 Mixtures
Article first published online: 20 APR 2011
© 2011 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 10, pages 3282–3285, October 2011
How to Cite
Sun, C.-N., Gupta, M. C. and Payzant, E. A. (2011), Effect of Laser Sintering on Ti–ZrB2 Mixtures. Journal of the American Ceramic Society, 94: 3282–3285. doi: 10.1111/j.1551-2916.2011.04537.x
This work was financially supported by the Ceramics and Nonmetallic Materials Program, Air Force Office of Scientific Research, under Grant No. FA9550-06-1-0163, NASA Langley Professor Program and NSF I/UCRC center grant. A portion of this research (XRD measurements) was conducted at the Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Division of Scientific User Facilities, U.S. Department of Energy.
- Issue published online: 4 OCT 2011
- Article first published online: 20 APR 2011
- Manuscript No. 28556. Received September 4, 2010; approved March 1, 2011.
Multilayer structures of ZrB2 containing 30–70 wt% Ti were fabricated using a laser sintering/melting technique. Ti acted as the binding interface for the hard ZrB2 particles. Structural properties and oxidation behavior of laser-sintered samples were studied using high-temperature X-ray diffraction (HTXRD). HTXRD revealed the formation of boride solid solutions (Zr0.61Ti0.39B2, Zr0.2Ti0.8B2), Zr0.3Ti0.7 and TiB whiskers as well as several oxide species (Ti2ZrO and ZrOx) during laser sintering process. Laser-sintered Ti–ZrB2 mixtures had high relative densities (>92%) and hardness values (up to 11.4 GPa). The reactions enhanced dissolution of ZrB2 into Ti, governing the final compositions of the mixtures and facilitating the production of high-density boride solid solutions.