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Metal spraying --- Plasma spraying

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Metal spraying --- Plasma spraying

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Recently, plasma spray has been received a large number of attentions for various type of applications due to the nature of the plasma plume and deposition structure. The plasma gas generated by the arc, consists of free electrons, ionized atoms, some neutral atoms, and undissociated diatomic molecules. The temperature of the core of the plasma jet may exceed up to 30,000 K. Gas velocity in the plasma spray torch can be varied from subsonic to supersonic using converging-diverging nozzles. Heat transfer in the plasma jet is primarily the result of the recombination of the ions and re-association of atoms in diatomic gases on the powder surfaces and absorption of radiation. Taking advantages of the plasma plume atmosphere, plasma spray can be used for surface modification and treatment, especially for activation of polymer surfaces. I addition, plasma spray can be used to deposit nanostructures as well as advanced coating structures for new applications in wear and corrosion resistance. Some state-of-the-art studies of advanced applications of plasma spraying such as nanostructure coatings, surface modifications, biomaterial deposition, and anti wear and corrosion coatings are presented in this book.

Plasma spraying. --- Spraying, Plasma --- Metal coating --- Plasma jets --- Protective coatings --- Biomedical engineering

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TBC materials in the hot components of a gas turbine are exposed to extremely harsh environments. Therefore, the evaluation of various environmental factors in applying new TBCs is essential. Understanding the mechanisms for degradation which occur in comprehensive environments plays an important role in preventing it and improving the lifetime performance. The development of novel coating techniques can also have a significant impact on lifetime performance as they can alter the microstructure of the coating and alter the various properties resulting from it. This Special Issue presents an original research paper that reports the development of novel TBCs, particularly the application of advanced deposition techniques and novel materials.

degradation --- high mechanical fatigue --- hot gas path components --- gas turbine lifetime --- gas turbine blade --- ANNs --- passive methods --- building energy --- internal covering --- thermal barrier coating (TBC) --- BaLa2Ti3O10 --- molten salt corrosion --- corrosion mechanisms --- crack healing --- encapsulation --- healing agent --- thermal barrier coating --- thermal durability --- cyclic thermal fatigue --- crack growth --- initial crack length --- failure --- hydrogenated amorphous silicon films --- high temperature oxidation --- super-low friction --- plasma spray–physical vapor deposition --- thermal stability --- thermal barrier coatings --- bond coat species --- electron beam-physical vapor deposition --- cyclic thermal exposure --- plasma spraying --- SrZrO3 --- TBC --- CMAS --- luminescence --- high temperature wear behavior --- dry sliding wear --- CoNiCrAlY --- detonation gun (D-gun) --- supersonic plasma spraying (SSPS)

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Ceramic materials in the form of coatings can significantly improve the functionality and applications of other engineering materials. Due to a wide range of controllable features and various deposition methods, it is possible to create tailored substrate–coating systems that meet the requirements of modern technologies. Therefore, it is crucial to understand the relationships between the structures, morphology and the properties of ceramic coatings and expand the base of scientific knowledge about them. This book contains a series of fourteen articles which present research on the production and properties of ceramic coatings designed to improve functionality for advanced applications.

photocatalytic coatings --- solidification --- plasma spraying --- TiO2 --- microstructure --- LDPE --- RF CVD --- doped DLC structure --- wettability --- biocompatibility --- ceramic coating --- anti-oxidation --- SiO2@Al additive --- carbon steel --- calcium hydroxyapatite --- sol-gel synthesis --- thin films --- spin coating --- surface roughness --- simulated body fluid --- SiO2 coatings --- sol-gel --- Zn doping --- antibacterial coatings --- hydrophobic coatings --- Ni–Cr alloy --- Ti(C, N) coatings --- ion release --- atmospheric plasma spraying --- Al2O3 --- Cr2O3 --- sliding wear --- phase transformation --- reactivity --- sol-gel coating --- corrosion resistance --- cells viability --- hydrophilic coating --- nitriding --- low friction --- piston ring --- micron-/nano-grain coatings --- nanoindentation size effect --- trans-scale mechanics theory --- SiC coatings --- oxide fibers --- chemical vapor deposition --- deposition mechanism --- thickness control --- silicon carbon-nitride --- silicone carbon-oxide --- PECVD method --- inhomogeneous optical filters --- gradient interference filters --- organosilicon precursors --- alumina coating --- sol–gel --- composite coating --- graphene oxide --- graphene nanoplatelets (GNP) --- rGO --- adiabatic shear instability (ASI) --- cold spray --- titanium dioxide --- bonding mechanism --- adhesion strength --- substrate deformation --- amorphous interface layer --- n/a --- Ni-Cr alloy