An inexpensive, environmentally friendly alternative to a toxic coating currently used in Australian naval helicopters has been developed at Monash University in collaboration with CAST Cooperative Research Centre in Melbourne.
The magnesium alloy used to house the gearbox of Royal Australian Navy SeaHawk helicopters is prone to severe corrosion in marine environments, costing millions of dollars in maintenance every year. To protect the alloy from corrosion, it is covered with a chrome-based coating that is toxic to humans and the environment.