Improvement of Resistance of Structural Metal Ceramics of Fe-C-Mn-MoCr Type by Boron Nonmetalic Coatings I. Mitev Department of Machinery and Equipment Technical University of Gabrovo 4, H. Dimiter str. Bulgaria ______________________________________________________________________________________ Abstract: During the last years the development of powder metallurgy is connected with constant se...

Transparent BaTiO(3):Eu(3+) films were prepared via a sol-gel method and dip-coating technique, using barium acetate, titanium butoxide, and polyvinylpyrrolidone (PVP) as modifier viscosity. BaTiO(3):Eu(3+) films ~500 nm thick, crystallized after thermal treatment at 700 masculineC. The powders revealed spherical and rod shape morphology. The optical quality of films showed a predominant band a...

Whilst innovative advancements in thermal spray technology, especially in terms of characterization of starting powders, coating processes and optimisation of coating process parameters have resulted in coatings of improved quality, there is an ever increasing demand to push the frontiers of coating applications. Post-treatment of thermal spray coatings either by HIPing (Hot Isostatic Pressing)...

Current Process HVOF thermal spray is widely used for coating critical wear parts like landing gear, bearing races, valves and turbine components. Generally, fully or partially molten metal, composite, or ceramic droplets are propelled from a gun or torch onto the workpiece. Multiple passes are required to build up the coating, since each pass only deposits ~ 0.0002 in 0.0005 in thickness of ma...

Coating a MoSi2 ceramic layer on Mo substrates is an excellent strategy to enhance their oxidation resistance at elevated temperatures. Suppressing elemental interdiffusion across the Mo/MoSi2 interface very important for extending service life of substrates. The present study attempted develop WMoNbVTa high-entropy alloy (HEA) as diffusion barrier interface. A new double-layer WMoNbVTa/MoSi2 c...

Oxide dispersion strengthened (ODS) alloys have been under intensive development over the past four decades due to their excellent high-temperature creep strength and good oxidation resistance. Nickel-based ODS alloys are the combination of gamma prime (γ’) strengthened superalloy with yttrium oxide evenly distributed throughout the matrix to allow the strength to be maintained to much higher t...

Ultrasound-assisted crystallization (sonocrystallization) was used to prepare a mixture of nanoand micrometer-sized crystals of the monoclinic form of paracetamol − a widely used analgesic known for its particularly problematic mechanical behavior under compression (i.e. poor tabletability). The nanoand microsized crystals yielded a powder which exhibits elastic moduli and bulk cohesions that a...

     The synthesis of titania via sol-gel method has been widely studied. In the present work, titania was deposited onto a titanium substrat...

Abstract Currently a lot of research has been done on hydrophobic layers, but in its application the layer is easily damaged and not corrosion resistant. Therefore, this intends to decide effect variations sintering temperature characteristic SiMn/PS nanocomposite layers using 60°C, 100°C, 140°C, 180°C 200°C for 1 hour furnace.. This uses HEM-3D (High Energy Milling Ellipse-3D Mention), XRD (X-...