the aim of this work is to synthesize and investigate the performance of yttria-doped zirconia solgelcoatings in the chemical corrosion prevention of zircaloy-4 (zirconium alloy) in a 1 n h2so4environment. the influence of four different molar ratios of water to alkoxide, namely 1, 4, 12, and20, on the coating quality and its corrosion prevention performance was investigated. differentialtherma...

Solution processed metal oxide thin films are important for modern optoelectronic devices ranging from thin film transistors to photovoltaics and for functional optical coatings. Solution processed techniques such as dip-coating, allow thin films to be rapidly deposited over a large range of surfaces including curved, flexible or plastic substrates without extensive processing of comparative va...

Two novel scaffold models made of chitosan fibers were designed, fabricated, and investigated. Raw chitosan fibers were either tightened between plastic rings or were processed into stand-alone scaffolds. Chitosan fiber scaffolds were further modified by coating with a thin layer of fibrillar collagen type I to biologize the surface. Cell culture experiments were carried out using murine osteob...

It is well known that injection of glass fibre–reinforced plastics (GFRP) causes abrasive wear in moulds’ cavities and runners. Physical vapour deposition (PVD) coatings are intensively used to improve the wear resistance of different tools, also being one of the most promising ways to increase the moulds’ lifespan, mainly when used with plastics strongly reinforced with glass fibres. This work...

corn )zea mays l. (is one of the most crop that its forage produce is developed in the country. this field research carried out in order to investigate the effect of seed coating with growth promoting bacteria )azotobacter and pseudomonas (and micronutrients )zn, b, mo, cu, fe and mn (on quantitative and qualitative yield of forage corn )zea mays l. sc. 640 (.the experiment design consisted of ...

The results of an atomic force microscopy study the surface nickel coating doped with phosphorus 2 μm thick obtained by cathodic arc evaporation after annealing at temperatures from 100 to 500 °C are presented. morphology changes significantly increase in temperature. A negative high correlation between specific energy and roughness was established. mechanical properties (microhardness, elastic...

Abstract The paper shows a significant influence of the multi-stage wire drawing technology on deformability and phase transformations in zinc coating. SEM tests proved that coating after hot-dip galvanizing consists number thin layers, ranging from 1 to 5 µm, differing thickness, chemical composition properties. When pulled through die heats up (as result friction between material tool) its dy...

Edible films and coatings are layers of edible biopolymers (proteins, lipids polysaccharides) that can be used as an alternate for plastic packaging materials, because is causing environmental pollution it deteriorate human health when come in contact with the food product. Along their environment friendly nature they carry anti-oxidants, anti-microbials, anti-browning agents, neutraceuticals, ...

Plastic parts are often coated to fulfill the desired functional requirements during product life. This may be for decorative purposes only, but also for functions such as improved tribology, wear and humidity resistance, UVand light stability, hygienic and biofilm resistance. Moving SLS towards Rapid Manufacturing (RM) and making those parts competitive with parts produced by other techniques ...