Powder metallurgy is a process technology for preparing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw materials, forming and sintering, manufacturing metal materials, composite materials and various types of products. Powder metallurgy and ceramic production have similarities, and both belong to powder sintering technology. Therefore, a series of new powder metallurgy technologies can also be used to prepare ceramic materials. Due to the advantages of powder metallurgy technology, it has become the key to solving new material problems and plays a pivotal role in the development of new materials.

Powder metallurgy includes grinding and products. Among them, pulverization is mainly a metallurgical process, which is consistent with the literal meaning. Powder metallurgy products usually go far beyond the scope of materials and metallurgy, and are usually interdisciplinary (materials and metallurgy, machinery and machinery, etc.) technology. In particular, modern metal powder 3D printing [1-2] integrates mechanical engineering, CAD, reverse engineering technology, layered manufacturing technology, numerical control technology, material science and laser technology, making powder metallurgy product technology a modern covering more disciplines Technology.

At present, powder metallurgy technology has been widely used in transportation, machinery, electronics, aerospace, weapons, biology, new energy, information and nuclear industries, and has become one of the most dynamic branches of new materials science. Powder metallurgy technology has a series of advantages such as significant energy saving, material saving, excellent performance, high product precision, and good stability, which is very suitable for mass production. In addition, some materials and complex parts that cannot be prepared by traditional casting methods and mechanical processing methods can also be manufactured by powder metallurgy technology, which has attracted the attention of the industry.