Two coatings were investigated: a relatively thick (3.7 μm) coating deposited using a low voltage electron beam system, and a thinner (0.7 μm) coating deposited using a cathodic arc process.
Two coatings resulting in opposite chemistries have been studied, an oxide layer that increases surface reactivity, and a similar fluorocarbon layer that makes it inert.
Two coatings, one with a polyurethane binder and one without, were compared for the application and evaluated as electrode material in piezoelectric testing, as well as tested for surface resistivity, tear strength, abrasion resistance and shear flexing.
Two coatings deposited using a cathodic arc process were investigated: a thicker (1.1 μm) TiAlN TiN dual-layer coating and a slightly thinner (0.7 μm) TiN coating.
The microstructural differences between the two coatings in the as-coated condition were investigated and the development of their microstructure during heat treatment was described.
In this work we studied details of the combination of two coatings, one a solid lubricant (WC/C) coating sputtered onto a hard, wear- and temperature-resistant (TiAlN) coating, deposited onto high-speed steel and cemented carbide substrates.
So, the ablation resistance of HfC-ZrC coating was worse than the other two coatings.
The panels with PF multicore microcapsules showed even better corrosion protection as compared to the other two coatings with most of the cracks in the coating being healed as well as prevented from the corrosion formation in the scribed line region (Figure 7c).
The work demonstrated that all the coated materials to be very much more resistant to material loss through corrosion wear (by nearly an order of magnitude) compared to uncoated stainless steel, and two coatings, W 13%B and W 23%B coated Ortron 90 were similarly resistant as CrN coated Ti 6Al 4V.
The friction and wear behaviors of cylinders with these two coatings were compared with those of the cylinder without coating under bio-oil lubricated conditions.
Combining the two coatings, i.e., applying a 640 nm Co coating on top of the 10 nm Ce, effectively reduces Cr evaporation and slows down the rate of alloy oxidation.
