INCLUSIONS IN MOLTEN MAGNESIUM AND POTENTIAL ASSESSMENT TECHNIQUES

Magnesium has increasingly gained acceptance in structural application s, particularly in the automotive industry. The fast-growing applicati ons of magnesium have led to the generation of a large amount of magne sium scrap, especially die-casting scrap. Due to both economic and env ironmental concerns, recycling of these scraps is imperatively demande d. In order to yield high-quality recycled magnesium, the characterist ics of inclusions in molten magnesium have to be identified, and techn iques to evaluate the cleanliness of molten magnesium must be develope d. This article reviews recent developments in characterizing inclusio ns and assessing the cleanliness of molten metals. The potential appli cation of these techniques to molten magnesium is also discussed.