Corrosion Engineering is the specialist discipline of applying scientific knowledge, natural laws and physical resources in order to design and implement materials, structures, devices, systems and procedures to manage the natural phenomenon known as corrosion. Generally related to Metallurgy, Corrosion Engineering also relates to non-metallics including ceramics. Corrosion Engineers often manage other not-strictly-corrosion processes including (but not restricted to) cracking, brittle fracture, crazing, fretting, erosion and more. Corrosion engineering groups have formed around the world in order to prevent, slow and manage the effects of corrosion. Examples of such groups are the National Association of Corrosion Engineers (NACE) and the European Federation of Corrosion (EFC), see Corrosion societies. The corrosion engineers main task is to economically and safely manage the effects of corrosion on materials. Corrosion Engineering Masters degree courses are available worldwide and are concerned with the control and understanding of corrosion.