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GENERAL INFORMATION

1. Title of website:
	Residual stress mapping in high yttria thermally sprayed zirconium oxide coatings. [Dataset]

2. Contributor information:
	Goel, Saurav
	Venkatachalapathy, Viswanathan
	Lee, Tung Lik
	Faisal, Nadimul (Robert Gordon University)
	Verma, Jaya
	Irungu, Beth
	Kalkhoran, Seyed Nader Arneli 
	
		
3. Date on which website first launched:
	2024-07-12
	

ACCESS INFORMATION

1. Release Date and Access Link:
	This file is due to be publicly released on the 16th July 2027. Full metadata is available from 
	the ISIS neutron and muon source data journal: https://doi.org/10.5286/ISIS.E.RB2310001-1
		
2. Recommended citation:
	GOEL, S., VENKATACHALAPATHY, V., LEE, T.K., FAISAL, N., VERMA, J., IRUNGU, B. and KALKHORAN, 
	S.N.A. 2024. Residual stress in high yttria thermally sprayed zirconium oxide coatings. [Dataset].
	Hosted on STFC ISIS neutron and muon source data journal [online]. Available from: 
	https://doi.org/10.5286/ISIS.E.RB2310001-1
	
	
CONTEXTUAL INFORMATION

1. Abstract:
	Need for high thermal efficiency in aero and land-based turbine engines push the envelope for low
	conductivity and high strength thermal barrier coatings (TBC?s). Prominent approach towards 
	achieving this is through high yttria content in zirconia to stabilize zirconia . High yttria 
	content degrades the thermal shock resistance of the TBC system. The project therefore aims to 
	explore the residual stress profile of 8YSZ (as sprayed) and 20YSZ (in as sprayed and thermal 
	shock conditions). Mapping residual stresses will provide qualitative information on the thermal 
	shock life of the TBC system thereby eliminating the need of expensive and time-consuming thermal 
	shock studies on all the possible chemistries. Due to the heavy lattice distortion unleashed by  
	the high atomic number rare earth elements, it is expected that neutron diffraction would be able 
	to predict the residual stress and quantify the thermal shock. Neutron diffraction residual strain 
	analysis is expected to expedite the selection of the best composition that would suit both the 
	requirements of thermal shock resistance as well as low thermal conductivity. Reduced tensile 
	residual stress are known to be beneficial to the fatigue life of coatings leading to enhanced 
	thermal cycling behavior ? which demonstrates wider impact of this investigation.