The purpose of writing the book Phase Diagrams for Metallurgy and Materials Engineers is to meet the primary textbook needs of undergraduate and postgraduate students in the metallurgy, materials and ceramics engineering departments in our country. The book is intended primarily as a core textbook for these students, but it also provides engineers working in the rapidly developing ceramics industry, as well as scientists working in universities and research and development laboratories, with explanations of ceramic systems, example problems and diagrams.