Affiliation:
1. Metal Powder Materials Industrial Technology Research Institute of GRINM, Beijing, 101407, China
2. Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China
Abstract
Sintered steel is widely used in various industries, including automotive, aerospace, and construction machinery, due to its notable attributes such as high precision, wear resistance, efficient material utilization, and cost-effectiveness. However, the presence of pores hinders sintered
steel from achieving a fully dense state, thereby restricting its broader applications. Copper infiltration enables the reduction or elimination of pores, minimizes stress concentration, and prevents microcrack formation. Consequently, this process significantly enhances the material’s
density and mechanical properties, particularly its dynamic mechanical characteristics such as impact toughness and fatigue performance. This paper provides an overview of the copper infiltration development history in sintered steel, summarizes the factors including substrate, infiltrant,
and infiltration process, and highlights the research progress in copper infiltration application in sintered steel. Furthermore, challenges associated with copper-infiltrated sintered steel are discussed, and recommendations for future development are presented.
Publisher
American Scientific Publishers