International Journal of Corrosion / 2012 / Article / Tab 1

Review Article

Development of Novel Corrosion Techniques for a Green Environment

Table 1

Comparison of conventional and nano coatings.

PropertiesConventional alumina/titaniaNanostructured alumina/titaniaImprovement

ToughnessPoorExcellentDramatic

Hardness (VHN)1,0001,000

Wear resistance (N m/mm3) ~5X

Corrosion resistanceGoodExceptionalSignificant

GrindabilityPoorExcellentDramatic

Fatigue life<1 million cycles>10 million cycles>10X

Flex toleranceResult in coating spallationCan be bent over 180 degrees with out spallationDramatic

Bond strength (psi)1,900~8000~4X

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