Since the Chinese calendar is a lunisolar calendar, the last day of a year is also called lunar New Year's Eve (Traditional Chinese: å¤§å¹´å¤, Pinyin: dÃ niÃ¡nyÃ¨, translated: old, large, huge, major, important year's night).
Aluminum corrodes but it does not rust. Rust refers only to iron and steel corrosion. Aluminum is actually very prone to corrosion. However, aluminum corrosion is aluminum oxide, a very hard material that actually protects the aluminum from further corrosion. Aluminum oxide corrosion also looks a lot more like aluminum (dull gray to powdery white in color), so it isn't as easy to notice as rusted iron.
Aluminium and aluminium alloys are treated by a corrosion resistant conversion coating that is called chromate coating or chromating.General method is to clean the aluminium surface and then apply an acidic chromium composition on that clean surface.luminium and aluminium alloys are treated by a corrosion resistant conversion coating that is called chromate coating or chromating.