For example, oxides of copper and manganese do not work well in a moist environment and other precious metals, while moisture tolerant, are less effective as a catalyst at low temperatures. With gold, however, the catalytic activity is enhanced by water vapor and is efficient at room temperatures. However, water-based paints dry differently, and automakers found that drying ovens plated with gold ensured the new paints provided the same quality finish as did their predecessors. Automotive paint drying ovens use infrared heat energy to dry auto paints. The combination of the infrared energy and gold reflectivity works more efficiently in drying water-based paints, saving time and lowering the energy use.
Gold is integral in maintaining car efficiency.
Gold plated connectors and contacts that operate in a car's engine require materials that can withstand the high-temperature and corrosive environment. In close proximity to intense heat, firefighters need to protect their eyes while maintaining the ability to see the fire scene clearly. Bunker gear head coverings have protective face heat shields that are coated with a thin layer of gold. Gold has been used for several years in this safety-related application because of its heat and infrared reflectivity. Gold sensors are also important in maintaining carbon dioxide levels required to extend the shelf life of packaged and stored foods.