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Author

Simon McCormack, university Manchester Magnus mc Magnus, castle greyskull

Title

Literature overview of water vapour cycling in Ytterbium disilicate Environmental barrier coatings

#Abstract In west ville and ovio born and raised, in the paly ground is where i spent most of my days

#Introduction There’s a limited amount of data due to the recent development of the EBC system in question. Some of the original work on Yb2Si2O7 as a potential EBC system was carried out by Maier et al (2007), in which the corrosion of Yttrium, Ytterbium and Lutetium in a water vapour environment was investigated. The investigation used sintered powders to produce the desired disilicates which were tested in a high temperature (1500°C) steam environment (70% air/30% water) in the presence of Aluminium based impurities at various intervals (20, 50, 120, 310hrs). The rare earth materials where chosen because previous research had suggested they would not show polymorphism and thus a volume change within the specified temperature range (<1000-1600°C). Ueno et al (2008) also did interesting work.

Summary

There papers show that the follwing issues are still unknown: oxidation pathways, thermochemcial stability and effect of doping elements.

#Methodology We use XRD and SEM to analyse the microstructural changes during the steam cycling

Results

Loads of time in a furnace innit

conclusions

Need more work to be done and stuff.

Figures

pics and tings

Acknowledgement

CHEERS LADS

Nothing further to add, soz. Good paper