Hafnium (Hf) is a lustrous silver grey, ductile, transition metal. The Hafnium metal is further purified to crystal bars using the van Arkel/de Boer iodine process. Hafnium will resist corrosion in air due to the formation of an oxide film, although powdered hafnium will burn in air. Hafnium thin film coating can also be used to provide surface hardness and protection. AEM produce Hafnium sputtering targets with highest quality, refined crystal bars, which ensures high purity, low zirconium content, and high reliability.