Adhesion Evaluation of TiN and (Ti, Al)N Coatings on Titanium 6Al-4V

Abstract

To assess the adhesion of nitride coatings on metals, titanium 6% aluminum 4% vanadium substrates were coated with titanium nitride (TiN) using both cathodic arc and electron beam evaporation. Titanium aluminum nitride ((Ti, Al)N) was also deposited using cathodic arc evaporation. The interfaces of the coated samples were loaded in tension using a high speed shock wave which caused spallation either at the interface, in the coating or in the metal. Scanning acoustic microscopy analysis of the spalled samples detected delaminations at the interface in the samples deposited by cathodic arc evaporation. DYNA2D modeling of plate impact spallation experiments revealed the tensile adhesion strength for TiN deposited by both techniques was ≈ 2.0 GPa. The tensile adhesion strength for (Ti, Al)N was less than 1.5 GPa.

Ceramic coating for corrosion (c3) resistance of nuclear fuel cladding

“…TiN and TiAlN coatings have been widely used for years on high-speed tool steels, cemented carbides, and cermet substrates for various cutting and finishing operations in the tooling industry [8][9][10][11][12][13][14][15]. In terms of corrosion resistance, TiN provides good chemical inertness [16] up to 600ºC [15] depending on the metal to nitrogen ratio (stoichiometry).…”

Experimental study of the bond interaction between CFRP and concrete under blast loading

“…Bond strength evaluation techniques under dynamic regime have been explored by the use of pulsed laser [14], plate impact [15] or high power electrical generators [16] but never with blast loading. In these previous studies, the mechanical wavelength was lower than the thickness of the material layers and thus, the main mechanism involved in the bond damage is spallation.…”

Multilayer (TiN, TiAlN) ceramic coatings for nuclear fuel cladding

“…TiN and TiAlN coating applications on high-speed tool steels, cemented carbides, and cermet substrates for various cutting and finishing operations in the tooling industry have been studied for years [12][13][14][15][16][17][18][19]. Depending on its stoichiometry, TiN can provide chemical inertness [9] up to 600ºC in air [19].…”