Abstract
The coated surfaces first layer Ti and second layer composite TiO2 with Al2O3 as coating Nanostructured thin films of using DC sputtering on structural steel (AISI l018) and study characterization of composite coating SEM/EDS inspection indicated a clearly perfect incorporation of layer composite TiO2 with Al2O3. X-XRD test done for specimen indicates a complex compound was found phase (Al2TiO5), the resulted coating layer of the target compound of (Ti and Al) powders gives different morphology from the Ti layer alone as well as. When using titanium target alone titanium layer with thickness about 100nm deposited and it must be anodized to get TiO2 phase which also decrease the Hydrogen permeation phenomena of steel (AISI l018) . Coating layer of (Ti and Al) target shown from surface as granular structure of the layer with a variable hemisphere's shapes varied from 25 to 50 nm in size, while cross section of coating layer indicates the hemispheres represents the tips of columnar structure. The Specimens roughness average of coated Ti and composite TiO2 with Al2O3 respectively was 4.831nm, 8.974 nm. Found that layer ceramic coatings TiO2 with Al2O3 as coating nanostructured thin films can be improve the hydrogen permeation resistance.
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