Rough surfaced implants have been reported to favor early bone healing than smooth surfaced implants. Among various methods introduced to roughen the implant surface, coating with calcium phosphate(CaP) is one of them. The purpose of this study was to evaluate the bone healing response of anodized implants with two different coating thickness of CaP(200 nm and 500 nm) deposited by ion beam assi...

TiAlBN coatings have been deposited by electron beam (EB) evaporation from a single TiAlBN material source onto AISI 316 stainless steel substrates at a temperature of 450C and substrate bias of -100 V. The stoichiometry and nanostructure have been studied by x-ray photoelectron spectroscopy, x-ray diffraction and transmission electron microscopy. The hardness and elastic modulus were determin...

Advancement in vacuum technologies and vapor deposition processes during last decades has led to the introduction of many modern coatings on metal cutting tools. Even in such an advanced vacuum coating techniques, the failure is not due to the wear of the coating but rather due to the lack of coating adhesion to the substrate. In this work, the coating adhesion test results were performed which...

In cold rolling, a textured roll can be used to imprint desired surface topography onto the sheet during rolling. This work proposes use of diamond-like carbon (DLC) coatings protect rolls in replacement carcinogenic hard chrome. For that, hydrogenated amorphous (a-C:H) was deposited on plasma nitrided tool steel, both for ground and specimens. Changes due DLC coating were assessed using confoc...

Silicon is the most widely used semiconductor for solar cells [ 1–4 ] and has also shown promising performances in photoelectrochemical (PEC) cells for hydrogen production. [ 5–10 ] Silicon photoelectrodes with nano/micro structures such as nano/ micro wire array [ 9,11 ] and black silicon [ 7 ] have exhibited improved PEC performances. Silicon nanowire (NW) arrays, in particular, are of consid...

Hollow glass waveguides (HGWs) are an attractive alternative to traditional solid-core and 2D photonic crystal, infrared transmissive fibers. Applications for HGWs at wavelengths longer than 2 microns include use of the guides for the delivery of laser power and for use as chemical and thermal sensors. To date, the most common HGW is one with an inner coating of Ag followed by a single-dielectr...

In the current study, the properties of the CrxN coatings deposited on the Inconel 718 superalloy using direct current reactive magnetron sputtering are investigated. The influence of working pressure on the microstructure, mechanical, and tribological properties of the CrxN coatings before and after high-temperature hydrogen exposure is studied. The cross-sectional scanning electron micrograph...

In this work the suitability of some Tibased coatings as coating for blood-contacting implants is analyzed. Layers of pure Ti, Ti nitride, Ti oxynitrides (TiN1-xOx with x = 0.25, 0.50, and 0.75) and Ti oxides were deposited from a plasma produced by cathodic arc evaporation under addition of N2 and/or O2. The oxynitrides are crystalline with the fcc structure of TiN up to x = 0.25. For x = 0.5 ...

Ti82 coatings were deposited by hydrogen reduction of Tic14 and BCl3. The objective was to correlate process variables with thermodynamic equilibrium calculations, deposition kinetics, coating stucture and properties. Particular emphasis was given to obtaining deposits having appropriate oxidation resistance to protect CISiC composites. Fi lms, obtained at moderate temperature (800°C), acted as...