Indian Journal of Advances in Chemical Science Volume: 5, Issue: , September 2017


ISSN No.: 2320-0898 (Print); 2320-0928 (Electronic)

DOI:  10.22607/IJACS.2017.504001



Research Article


      Performance Study of Yttria-stabilized Zirconia and Gadolinium Zirconate Coating for Nickel-base Alloy for Turbine Application    
G. Purushotham*
Experimental work is carried out to deal with the development of new synthesis techniques for the functional materials such as yttria-stabilized zirconia (YSZ) and gadolinium zirconate used in the field of thermal barrier coatings (TBC). Currently, TBCs are manufactured by dry route technologies, but such methods are directional and often require costly investments and complicated operations. We have carried out significant work aimed at developing sol-gel routes, which are non-directional methods, to prepare, by suitable chemical modifications, nanocrystalline materials with a controlled morphology. The main advantage of this method is to decrease the crystallization temperature, much lower than the conventional processes, allowing the synthesis of reactive powders with nanometric particles size. In this research work, the formulation of an alkoxide sol has been optimized to obtain homogeneous YSZ films. The films microstructures have been investigated using scanning electron microscopy, and thermal property has been studied.

Key words: Nickel alloy, Yttria-stabilized zirconia, Gadolinium zirconate, Thermal barriers coatings.



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