Review Article
Development of Novel Corrosion Techniques for a Green Environment
Table 1
Comparison of conventional and nano coatings.
| Properties | Conventional alumina/titania | Nanostructured alumina/titania | Improvement |
| Toughness | Poor | Excellent | Dramatic |
| Hardness (VHN) | 1,000 | 1,000 | ā |
| Wear resistance (Nm/mm3) | | | ~5X |
| Corrosion resistance | Good | Exceptional | Significant |
| Grindability | Poor | Excellent | Dramatic |
| Fatigue life | <1 million cycles | >10 million cycles | >10X |
| Flex tolerance | Result in coating spallation | Can be bent over 180 degrees with out spallation | Dramatic |
| Bond strength (psi) | 1,900 | ~8000 | ~4X |
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