Wear-resistant surface coloring by ultrathin optical coatings

Surface-modified nanoparticles for ultrathin coatings

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Tiina Nypelö Name of the doctoral dissertation Surface-modified nanoparticles for ultrathin coatings Publisher Aalto University School of Chemical Technology Unit Department of Forest Products Technology Series Aalto University publication series DOCTORAL DISSERTATIONS 12/2012 Field of research Forest Products Chemistry Manusc...

Self-lubricating, low-friction, wear-resistant Al-based quasicrystalline coatings

After gas atomization, a quasicrystalline powder based on aluminium was used to prepare a thick coating by high-velocity oxygen-fuel flame torch spraying. This layer was deposited on top of a bond-coat layer on a steel plate. A post-spraying annealing treatment turned the two layers to their stable state, a γ-brass crystal and an icosahedral quasicrystal, respectively. The projection parameters...

Btanoscale Boehmite Filler for Corrosion- and Wear-resistant Polyphenylenesulfide Coatings

"tin Coatings for Wear Resistance and Gold-like Decorative Coatings"

Titanium Nitride (TiN) coatings have led the way for providing increased wear resistance and extended life of cutting tools, whether carbide inserts or high-speed steel. Where the earliest applications were for high temperature substrate materials (carbides) and chemical vapor deposition (CVD) was the process of choice, later developments in the physical vapor deposition (PVD) technology, espec...

Loss/gain-induced ultrathin antireflection coatings

Tradional antireflection coatings composed of dielectric layers usually require the thickness to be larger than quarter wavelength. Here, we demonstrate that materials with permittivity or permeability dominated by imaginary parts, i.e. lossy or gain media, can realize non-resonant antireflection coatings in deep sub-wavelength scale. Interestingly, while the reflected waves are eliminated as i...