Abstract
The rapid progress in engineering enhances the demands set on materials requiring better mechanical properties, resistance to frictional wear, resistance to corrosion and erosion etc. These demands can be satisfied by e.g. applying various surface engineering techniques which permit modifying the microstructure, phase and chemical composition of the surface layers of the treated parts. By subjecting a laminate composite: α+β titanium alloy - TixAly intermetallic phases produced by diffusion bonding of titanium alloy and aluminum with the hybrid surface treatment that consists of magnetron sputtering and glow discharge assisted oxidizing or by the glow discharge nitriding process we can produce a composite built of several zones arranged in the following sequence: Al2O3/ TixAly intermetallic phases/titanium alloy/TiAl3/ titanium alloy/ TixAly intermetallic phases/ Al2O3 or TiN+αTi(N)/ titanium alloy/ TiAl3/ titanium alloy/αTi(N) +TiN. The paper presents the structure, phase composition and properties such as the resistance to frictional wear and to corrosion of a new constructional material - a laminate composite Ti –Al with diffusion surface layers, which widen significantly the application range of titanium alloys.
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