By a News Reporter-Staff News Editor at Journal of Technology -- Investigators publish new report on Materials Science. According to news reporting out of Valencia, Spain, by VerticalNews editors, research stated, "Yttria-stabilized zirconia (3YSZ) coatings were successfully obtained by suspension plasma spraying. The coatings present generally two-zones-microstructure comprising nanostructured zones contributed by unmolten, partially sintered nanoparticles surrounded by lamellar splats formed from molten and agglomerated in-flight fine solids."
Our news journalists obtained a quote from the research from Valencia Polytechnic University, "In addition, different types of cracks inside the coating microstructure were classified and quantified by image analysis such as e.g. inner microcracks and segmentation cracks associated with quenching process as well as horizontal interlamellar cracks. Thermophysical properties of sprayed coatings were tested with a thermal diffusivity set up basing onto light flash principle. Subsequently, the thermal conductivity was determined with the use of literature data of density and specific heat. The calculations showed very low thermal conductivities values. The values did not correlate with coatings porosity data. Consequently, the analysis of variance (ANOVA) test allowed evaluating the possible impact of the various types of cracks on thermal conductivity. By this analysis, a good correlation between vertical cracks, which include microcracks and segmentation cracks, and thermal conductivity was found."
According to the news editors, the research concluded: "The findings also confirmed the increase of thermal conductivity associated with this type of cracks."
For more information on this research see: Correlation of thermal conductivity of suspension plasma sprayed yttria stabilized zirconia coatings with some microstructural effects. Materials Letters, 2013;107():370-373. Materials Letters can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Materials Letters - www.elsevier.com/wps/product/cws_home/505672)
Our news journalists report that additional information may be obtained by contacting P. Carpio, Valencia Polytechnic University, ITM, E-46071 Valencia, Spain. Additional authors for this research include Q. Blochet, B. Pateyron, L. Pawlowski, M.D. Salvador, A. Borrell and E. Sanchez.
Keywords for this news article include: Spain, Europe, Valencia, Materials Science
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2013, NewsRx LLC