Air gas dynamic spraying of powder mixtures: Theory and application

作者：Maev RG^*; Leshchynsky V

来源：Journal of Thermal Spray Technology, 2006, 15(2): 198-205.

DOI：10.1361/105996306X108048

• cold gas dynamic spraying
• composite materials
• influence of spray parameters
• properties of coatings

The radial injection gas dynamic spray (RIGDS) technology of powder coatings deposition was considered for this work. A coating was created by injecting powders with variable compositions into a supersonic air jet and depositing powder on the substrate. This study describes the preliminary analysis of an air gas dynamic spray method realized by a portable RIGDS apparatus with a radial injection of powder. Attention was given to shock compaction processes during the coating structure formation and examples of powder mixtures utilization in RIGDS. It was shown that the operational parameters of supersonic powder-gas jet have a significant influence on the coating's microstructure, thus defining the high performance of the coating. Compaction and bonding of particles were analyzed.

• 出版日期2006-6