CHARACTERISATION OF PLASMA SPRAYED NiCrAlY, Ni-20Cr AND Ni3Al COATINGS ON A Ni-BASED SUPERALLOY INCONEL 718
S. B. Mishra, S. Prakash, K. Chandra
International Symposium of Research Students on Materials Science and Engineering
abstract:In the present study the NiCrAlY, Ni-20Cr and Ni3Al metallic coatings were deposited on a Ni- based Superalloy, namely superni 718 (Inconel 718) by Shrouded Plasma Spray Process. NiCrAlY was used as bond coat in all the cases. All the coatings have shown lamellar structure with distinctive boundaries along with the presence of some porosity. The microhardness of the coatings is found to vary with the distance from the coating-substrate interface. Ni-20Cr coating had indicated a maximum microhardness, while a minimum by Ni3Al coating. The phases revealed by XRD of the coatings have shown the formation of solid solutions.
keywords:Plasma spray coatings; Superalloy; Protective coatings; NiCrAlY coatings; erosion
本站文章未经允许不得转载；如欲转载请注明出处，北京桑尧科技开发有限公司网址：http://www.sunspraying.com/
|
