Effect of laser sintering on Ti-ZrB2 mixtures

Chen Nan Sun, Mool C. Gupta, E. Andrew Payzant

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

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, Zr 0.2Ti0.8B2), Zr0.3Ti0.7 and TiB whiskers as well as several oxide species (Ti2ZrO and ZrOx) during laser sintering process. Laser-sintered Ti-ZrB 2 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.

Original languageEnglish
Pages (from-to)3282-3285
Number of pages4
JournalJournal of the American Ceramic Society
Volume94
Issue number10
DOIs
StatePublished - Oct 2011

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