Microstructure on Laser In Situ Deposit of TiB_x/TiC ReinforcedComposite Coatings

Abstract:

In situ synthesized TiB_x/TiC reinforced composite coatings were prepared on Ti-6Al-4V substrate by laser in situ deposition using 10B₄C-18TiNi-72Ti-6Al-4V (wt. %) powder blends as the feedstock materials. The microstructural analysis of the composites was performed using scanning electron microscope, and phase analysis was done with X-ray diffraction. The results showed that the composite coatings contained long needle TiB, irregular block TiB₂ and disperse particles/dendrites TiC, the thick rod phase which was a inlay structure consisted of TiB₂ and TiC. These composite reinforced phases were evenly distribution in the (TiNi+Ti₂Ni+α–Ti) substrate.

• Periodical: Materials Science Forum (Volume 849)
• Pages: 665-670
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.849.665
• Online since: March 2016
• Authors: Jing Liang, Xiao Meng Tan, Cheng Jin Wang, Sui Yuan Chen, C.S. LIU, Jin Cheng Qin
• Keywords: Composite Coatings, Laser In Situ Deposit, Ti-6Al-4V, TiB_x, TiC, TiNi

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