The objective of this book is to systematically describe the application of powder materials in aerospace engineering. It is intended to enable readers to have a deeper understanding of powder materials and their applications, as well as to provide ideas and cases for creating new powder materials and improving existing powder forming technology.The main contents of this book include basic materials for aerospace, basic principles of powder metallurgy, basic principles of powder metallurgy of nanomaterials, powder metallurgy structural materials, hot resisting materials and materials strong to high-temperature, composite materials, friction materials, special-purpose functional materials, new technologies in powder metallurgy, special applications of metal powders.The book serves as a reference for teachers, undergraduates, graduate students, scientific researchers and engineering technicians who are engaged in theoretical and technical research in powder metallurgy, material forming, additive manufacturing and other fields.