A Brief Introduction to the Ancient Indus Civilization. The greater Indus region was home to the largest of the four ancient urban civilizations of Egypt, Mesopotamia, South Asia and China. It was not discovered until the 1920's. Most of its ruins, even its major cities, remain to be excavated. The ancient Indus Civilization script has not been deciphered.
Anodising to Prevent Galvanic Corrosion. Galvanic corrosion is a serious issue across the engineering industry and it has a variety of solutions, which all boil down to one technique: breaking the circuit.Anodising is one way to break the circuit.The anodic coating is made up of aluminium oxide, which is a good electrical insulator.The oxide layer is a thousand times thicker than the natural oxide that forms on aluminium, which offers essentially no galvanic protection.recautions When Using Anodising for Galvanic Corrosion Protection. Anodised aluminium has an electrically insulative surface, just like any of the other barrier protection techniques and if this surface is damaged then the protection it provides will be reduced or eliminated.
Metal Type. One simple way to prevent corrosion is to use a corrosion resistant metal such as aluminum or stainless steel. Depending on the application, these metals can be used to reduce the need for additional corrosion protection. The application of a paint coating is a cost-effective way of preventing corrosion.