Variation in lattice parameters and strain of sintered titanium powder by advanced hydrogen sintering process

The effects of hydrogen injection during a sintering process on lattice parameters and the strain of titanium powder have been investigated using X-ray diffractometry (XRD). In previous works, the sintering properties of titanium were improved by hydrogen injection. The present work shows that the hydrogen injection directly impacts the lattice parameters and the strain of titanium. The result shows that the hydrogen injection reduced the lattice parameters with the d-space, a, c, and c/a, and the cell volume compared with the reference samples obtained under an argon atmosphere. This lattice structure variation from the hydrogen injection is mainly due to the suppression of oxidation during sintering at high temperatures and the reduction of the interstitial elements such as oxygen. (C) 2018 Elsevier B.V. All rights reserved.