News Column

Investigators from University of Florida Report New Data on Materials Engineering

June 18, 2014

By a News Reporter-Staff News Editor at Journal of Engineering -- Investigators discuss new findings in Materials Engineering. According to news reporting from Gainesville, Florida, by VerticalNews journalists, research stated, "A novel coating with microstructure comprise equiaxed grains and multitudinous pores applied to thermal barrier coatings are developed by atmospheric plasma spray (APS) using spherical agglomerated and sintered powder made from nano-particles of partially stabilized zirconia (YSZ). The coatings were then heated to 1100-1200 degrees C for thermal evaluation tests."

The news correspondents obtained a quote from the research from the University of Florida, "Field emission scanning electron microscope and X-ray diffraction were applied to analyze the nanostructured powder feedstocks and coatings. The results demonstrated that the coatings consisted of integrated fine equiaxed grains and multitudinous pores but not lamellar structure like conventional plasma sprayed ceramics. The size of equiaxed grain in the coatings varied in a large range and grain size slightly increased along with the rise of testing temperature and time. Moreover, the nanostructural equiaxed grains with the similar size of original nanoparticle, which surrounded the pores in the coatings undergoing solidification during plasma spraying were observed. The results of phase composition showed that the metastable tetragonal phase was the primary phase in nano YSZ coatings and does not change with the working environment."

According to the news reporters, the research concluded: "Furthermore, high temperature contributed to the increase of the microhardness of the coating."

For more information on this research see: Equiaxed and Porous Thermal Barrier Coatings Deposited by Atmospheric Powder. Advanced Engineering Materials, 2014;16(4):406-412. Advanced Engineering Materials can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany. (Wiley-Blackwell -; Advanced Engineering Materials -

Our news journalists report that additional information may be obtained by contacting Y. Gao, University of Florida, Dept. of Elect & Comp Engn, Gainesville, FL 32611, United States. Additional authors for this research include J.Y. Gao and D.M. Yang.

Keywords for this news article include: Florida, Gainesville, United States, Materials Engineering, North and Central America

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Source: Journal of Engineering

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