Abstract
Zirconia coatings were prepared by heat treating the zirconium hydroxide, electrodeposited on 316L stainless steel by pulse current. Heat treatment at 400 and 600°C resulted in crystallisation of amorphous hydroxide to tetragonal zirconia, which improved the nanohardness and Young's modulus of the coatings. Nanoindentation testing of the coatings showed that heat treatment at 600°C would increase the nanohardness and Young's modulus of the coatings. This can be attributed to the complete crystallization and thus development of a single tetragonal phase in the coatings.
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