Engineered materials can be damaged or degraded by chemical or electrochemical methods. For metals, this damage is called corrosion, and is often referred to as rust or corrosion. For non-metals, this damage is called degradation or degradation. This is the definition of corrosion in aluminum alloy castings. Rust prevention refers to reducing or preventing these effects by appropriate means and methods.
The rust prevention of aluminum alloy castings is divided into permanent rust prevention and temporary rust prevention. Permanent anti-rust methods include electroplating, chemical plating, thermal spraying, coating, vapor deposition, etc. Temporary anti-rust is the anti-rust packaging of aluminum alloy die castings.