Magnesium has been recently recognized as a biodegradation metal for bone substitute application. In the present work, porous magnesium-zinc scaffolds were prepared by powder metallurgical process and nano hydroxyapatite (HAP) coating on the Mg-3Zn (wt.%) scaffold was prepared by pulse electrodeposition and alkali treatment processes to improve the corrosion resistance of scaffold. The results ...

Thermal spray coatings are widely used in many applications, and the adhesion effect at coating/substrate interface plays an important role during service life. The thermal spraying coating substrate is primarily combined by a mechanical seizure effect. In this work, strategy to generate interfacial metallurgical bonding proposed. Plasma with wire feeding was adopted increase size of sprayed pa...

In the present investigation, H13 tool steel has been deposited on copper alloy substrate using both CO2 and diode laser. A detailed parametric analysis has been carried out in order to find out optimum processing zone for coating defect free H13 tool steel on copper alloy substrate. Followed by parametric optimization, the microstructure and microhardness of the deposited clads have been evalu...

The paper presents the study results of CrN/TiN multi-layer coatings, as well single-layer TiN and CrN coatings on Cr12MoV cold work die steel deposited by vacuum-arc plasma-assisted method. Three 8-, 16-, 32-layers were deposited, in which thickness each layer was 500 nm, 250 nm 125 respectively. All reveal a face-centered cubic structure with highly oriented (111) growth. hardness about 27 GP...

we report on the synthesis, morphology, chemically and structurally of tio2-nio-sio2 nanostructure. the tio2-nio-sio2 nanostructure was synthesized by a method based on the sol-gel method, by the simultaneous gelation of all cations. the coatings were deposited on dried soda-lime glass slides by spin coating. composite powders and coating on glass have been characterized by xrd, sem, edax, and ...

High strength aluminium alloys are widely employed in aerospace applications. However specific environmental conditions may trigger corrosion and therefore these alloys require additional protection. Most current conversion coatings used for this purpose are Cr(VI) based, and thus environmentally undesirable. A possible replacement is a Ti based coating, Nabutan STI/310. The aim of this work is...

This study investigated the effects of a diamond-like carbon (DLC) coating on frictional and mechanical properties of orthodontic brackets. DLC films were deposited on stainless steel brackets using the plasma-based ion implantation/deposition (PBIID) method under two different atmospheric conditions. As-received metal brackets served as the control. Two sizes of stainless steel archwires, 0.01...

Al2O3 and Al2O3-ZrO2 coatings were deposited on stainless steel using atmospheric plasma spraying. The influence of arc current zirconia addition the surface morphology coating, phase composition tribological properties under dry sliding conditions investigated. reduced roughness coatings. X-ray diffraction measurements indicated that composed β-Al2O3, α-Al2O3, γ-Al2O3 phases. led to formation ...

Ž . The electrocopolymerization of carbazole and acrylamide on highly oriented pyrolytic graphite HOPG from ACN solutions Ž . via cyclovoltammetry CV was studied in order to evaluate the possibility to deposit uniform and thin but pinhole-free and still reactive coatings onto graphite-like substrates. The morphology of the coatings was investigated using atomic force microscopy and the coating ...

Abradable coatings are essentially sealing materials and deposited by thermal spray techniques. The main function of these is to control the clearance gas path turbine engines. abradable coating prevents blade damage abrading itself when there an offset or vibration during operation. Since meant abrade, preferred material relatively softer than material. As prone solid particle erosion at high ...