Premium
Effect of Laser Sintering on Ti–ZrB 2 Mixtures
Author(s) -
Sun ChenNan,
Gupta Mool C.,
Payzant E. Andrew
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04537.x
Subject(s) - materials science , boride , sintering , whiskers , dissolution , relative density , diffraction , oxide , laser , metallurgy , composite material , chemical engineering , engineering , physics , optics
Multilayer structures of ZrB 2 containing 30–70 wt% Ti were fabricated using a laser sintering/melting technique. Ti acted as the binding interface for the hard ZrB 2 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 (Zr 0.61 Ti 0.39 B 2 , Zr 0.2 Ti 0.8 B 2 ), Zr 0.3 Ti 0.7 and TiB whiskers as well as several oxide species (Ti 2 ZrO and ZrO x ) 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 ZrB 2 into Ti, governing the final compositions of the mixtures and facilitating the production of high‐density boride solid solutions.