Superlubricity of Titanium Alloy Enabled by MoS2 Flakes and a-C:H Film

Titanium alloys are often used in engineering fields including aerospace, cryogenic technologies, and weaponry due to their remarkable qualities. However, several issues a high coefficient of friction, weak wear resistance, low hardness hinder widespread usage. Despite efforts enhance tribology, achieving ultra-low friction on titanium alloy surfaces remains challenging problem materials science. Here, we report the superlubricity MoS2 + a-C:H (Mo-a films) composite film, prepared by magnetron sputtering spraying lubricate surfaces. Robust was achieved Mo-a films with (COF) below 0.007 helium environment. Compared reference substrates, introduction film reduced roughly 1%, three orders magnitude. High-resolution characterizations indicate that this enhanced tribology can be attributed formation transfer which is enriched nanostructured graphene sheets nanoscrolls, formed shear stress-induced structural transformation nanosheets. This transitioned initial high-resistance steel-to-a-C:H contact super low-resistance steel-to-transfer contact, thus reduction. work outlines pathway solving poor resistance surfaces, an important guideline for applications mechanical engineering.