A two-step oxygen boost diffusion process has been developed to produce deep hard case on titanium alloys. The dissociation process of the oxide layer in the boost diffusion was investigated in detail. The process parameters have been optimised to tailor the oxygen profile to fit the engineering requirements. Metallographic, X-ray diffraction examinations as well as mechanical testing were performed to evaluate the boost diffused treated samples. (c) 2006 Elsevier B.V. All rights reserved.
- boost diffusion
- thermal oxidation