Research Status of Surface Modification of Titanium-Based Alloys by Pack Cementation

Abstract

With the continuously rapid development of materials science, better properties are equably required in the area of material surface engineering, especially the surface friction and high-temperature oxidation resistance of titanium alloy. It is a great approach to select a scientific way for surface treatment to improve the surface performance so as to obtain surface films/coatings/layers. It can provide a vital latent remedy to the insufficient high-temperature oxidation resistance and wear resistance of titanium alloys. Pack cementation is a reliable means at present by virtue of its distinct composition, covering pollution-free and the firm metallurgical bonding between the alloying coating and the matrix. In the last few years, with the growing demands for the surface performance of materials in multifarious harsh environments, the coating obtained by pack cementation is developing toward controlling coating composition accurately and applying it to complex parts. This review opens with an abbreviated introduction of pack cementation technology. The recent developments of pack cementation technology for enhancing diverse surface properties are scientifically reviewed in the aspects of background, previous research results and the future development directions.

Formation Mechanism of Ti–Si Multi-Layer Coatings on the Surface of Ti–6Al–4V Alloy

“…The demand for high-performance materials is increasing in modern industries, particularly in harsh service environments such as high temperature, high pressure, and corrosion, where material stability is crucial for engineering applications [1][2][3]. Titanium alloys are extensively utilized in fields such as aero-engines and shipbuilding due to their high specific strength, high specific stiffness, and excellent corrosion resistance [4].…”