Characterization of nanostructured Ti–B–(N) coatings produced by direct current magnetron sputtering

Tribological behaviour of titanium carbide/amorphous carbon nanocomposite coatings: From macro to the micro-scale

“…nc-TiN/aSi 3 N 4 , nc-TiN/a-Si 3 N 4 /a-and nc-TiSi 2 , nc-(Ti 1 − x Al x )N/aSi 3 N 4 , nc-TiN/TiB 2 , nc-TiN/BN, etc. [1][2][3][4][5][6][7][8][9]) displaying hardness values ranging from 40 to 60 GPa with excellent thermal resistance. These materials are excellent candidates for protective applications as cutting or drilling tools; however, for tribological applications other properties as low friction, wear resistance, toughness or load capacity are also needed in order to prevent the brittle fracture or delamination of the coating under severe conditions.…”

Characterization of Ti-B-C-N films deposited by dc magnetron sputtering of bicomponent Ti/B4C target

“…It should be noted that the existence of TiN amorphous phase was also considered to be feasible based on the Ti-B-N ternary phase diagram [5].…”

“…However, further increase of the nitrogen amount in the gas mixture resulted in a noticeable decrease in the film hardness. The formation of an amorphous matrix at high nitrogen content in a work gas mixture is suggested to occur at the expense of a decrease in the percentage of hard TiN and TiB x phases [5]. So, the amorphous phases, which surround hard nanocrystals, don't favor blocking of these hard phase grains, thereby inducing softening of the film.…”

“…These materials are formed by a mixture of components, which typically consist of nanometer sized crystals embedded into an amorphous or nanocrystalline matrix. Among a variety of these materials the Ti transition metal nitrides and carbides (such as TiN and TiC) of binary and Ti-C-N and Ti-B-N ternary systems are attractive materials because of their high hardness, high melting point, chemical inertness, good wear and corrosion resistance [4][5][6][7]. For these reasons, they have been used for hard wear-resistant coatings in machining industry, diffusion barriers in microelectronics, and electrodes in semiconductor devices.…”

Reduction of wear at hot forging dies by using coating systems containing boron

“…The deposition is possible by means of different coating techniques while the presented wear protection films can solely be created with PECVD techniques. Ti-B-N coating systems with nanocomposite properties are described in similar works [5,[10][11][12] to consist at least of two phases, one or two that are nanocrystalline (TiB 2 , TiN) and one which is amorphous. The potential of these new applicable materials concerning enhanced physical, chemical and engineering properties and nanocomposite coating materials is currently attracting the interest of the hot forming industries.…”