International. This article presents findings on the influence of titanium grain size on its surface properties and on the efficiency of surface treatments. The investigations were conducted on grade 2 titanium of two grain sizes.
The chemical composition and chemical state of the surface were analyzed using X-ray photoelectronic spectroscopy. Different types of surface treatment were applied: plasma nitriding and a combination of chemical and mechanical modifications using hydrofluoric acid etching and shot blasting treatment. The effect of grain size on surface treatments was assessed by quantifying roughness, hardness measurements, and observations of surface and microstructure.
Research showed that grain size influences the wetting and energy-free surface of grade 2 titanium. A reduction in grain size is beneficial for the effectiveness of plasma nitriding.
The results also indicate that the grain size of grade 2 titanium affects surface morphology after peeling and chemical etching with HF acid; these various methods make it possible to modify the surface roughness of titanium over a wide range.
The paper demonstrates that grain size affects the surface properties of grade 2 titanium and can be used as an additional parameter to optimize the microstructure and surface properties of layers and coatings.
Source: www.sciencedirect.com
