Synthesis Properties and Applications of Intermetallics Ceramic and Cermet Coatings

<p><span style=color: rgba(23 43 77 1)>This Special Issue focuses on various synthesis methods of intermetallics ceramics and composite materials in the form of both protective coatings and bulk materials. The coatings have been produced by D-gun APS arc and cold spraying of Fe-Al powders and by sintering of a mixture of Fe and Al powders with the addition of mullite and Al</span><sub style=color: rgba(23 43 77 1)>2</sub><span style=color: rgba(23 43 77 1)>O</span><sub style=color: rgba(23 43 77 1)>3</sub><span style=color: rgba(23 43 77 1)> ceramics which reinforce the composite structure after insitu formation under conditions of the SHS process. Another composite crystal structure has been produced by magnetron sputtering and heat treatment of the HfV</span><sub style=color: rgba(23 43 77 1)>2</sub><span style=color: rgba(23 43 77 1)>-HfV</span><sub style=color: rgba(23 43 77 1)>2</sub><span style=color: rgba(23 43 77 1)>O</span><sub style=color: rgba(23 43 77 1)>7</sub><span style=color: rgba(23 43 77 1)> coating with temperature-independent thermophysical properties as a material with anomalously increasing thermoelastic constants at negative thermal expansion of the HfV</span><sub style=color: rgba(23 43 77 1)>2</sub><span style=color: rgba(23 43 77 1)>O</span><sub style=color: rgba(23 43 77 1)>7</sub><span style=color: rgba(23 43 77 1)> oxide. A multifunctional porous anodic alumina (PAA) ceramic coating for photonic applications has been fabricated by the aluminium anodising process revealing the effect of temperature on the quality of the distributed Bragg reflector (DBR) structure. Another direction is aluminides synthesized in the CVD process on nickel-based superalloys MAR 247 and Haynes 282 manufactured by direct metal laser sintering which were subjected to structural thermal stability wear resistance and fatigue strength testing using the unconventional non-destructive eddy current method.</span></p>