Powder Technology, Vol.350, 117-122, 2019
Low-cost Ti powders for additive manufacturing treated by fluidized bed
Fluidized bed was used to treat low-cost hydride-dehydride Ti powders. Properties and microstructures of powders were investigated in terms of surface morphology, particle size distribution, fiowability, interstitial content and surface oxidation behavior. The results showed the modified morphology and particle size distribution benefit its fiowability after treating. The mechanisms of fiowability improvement and oxidation behavior are also discussed. The powder fiowability is improved to 35.2 +/- 0.3 s/50 g, while its oxygen increment is negligible for the Ti powders after treating at 450 degrees C for 10 min. This study offers a cost-effective process to produce Ti powders for potential use in additive manufacturing. (C) 2019 Elsevier B.V. All rights reserved.