High Volume Fraction Carbide Reinforced Copper Matrix Composites for Sliding Contact Applications
This study deals with the processing, microstructure and properties of the carbide reinforced copper matrix composites. Powder technology was used to successfully fabricate the composites. NbC particulates were used as reinforcements for copper matrix. The microstructure of the composite was characterized by scanning electron microscopy. The microstructural study revealed that the NbC particles were distributed uniformly in the matrix phase. No interface debonding and micro- cracks were observed in the composite. NbC particles were found in round shape in copper matrix composite. The composite hardness of 78 HRA was found with 60vol% NbC content. Electrical conductivity as high as 7%IACS was achieved. The wear performance and conductivity value predicts that NbC reinforced copper matrix composites can be used as sliding contact applications.
Young Won Chang, Nack J. Kim and Chong Soo Lee
F. Akhtar "High Volume Fraction Carbide Reinforced Copper Matrix Composites for Sliding Contact Applications", Materials Science Forum, Vols. 561-565, pp. 627-630, 2007