Improved flexural strength of diamond/Cu–Fe composites with Cu–B–B₄C coating

Abstract

The interface between diamond and copper (Cu) alloy matrix in the composites significantly affects their mechanical properties. The functionalization of the diamond surface is of great potential for exploiting different advanced mechanical tools. In the present case, copperboron-boron carbide (Cu-B-B 4 C) composite coating was grown simultaneously on the whole surface of diamonds. Subsequently, the diamond particles were reinforced with copper-iron (Cu-Fe) matrix composites through powder metallurgy. The microstructural analysis demonstrated that the composite coatings were composed of two layers: the interior layers of B 4 C and B as well as the exterior layer of Cu-B alloy. The bending strength of Cu-B-B 4 C composite-coated diamond was determined to be 701 MPa at a sintering temperature of 800°C, which was nearly 27% higher compared to that (553 MPa) of uncoated diamond/Cu-Fe composites.

Study on the Microstructure and Mechanical Properties of Diamond Particle-Reinforced Copper-Iron Sandwich Composites Prepared by Powder Metallurgy

“…After the measurement of the three-point bending load test, the force–displacement relationship of each group of samples in the SD/Cu-Fe sandwich composite is shown in Figure 7 . The results are consistent with the trend in the literature [ 25 ]. It can be seen from the figure that the sample experienced six stages during the test: elastic deformation–plastic deformation, cracking–crack propagation–secondary elastic deformation–secondary plastic deformation, and cracking–crack propagation.…”

Wear behaviour of different nano particles coating on Al6061 substrate

“…In addition, Jeyaraj et al [6] found that the amount of particle reinforcement and its distribution homogeneity plays a vital role in the functional properties of the composite coating. The different nano particles used in the Ni matrix coating are SiC [5,7], Al 2 O 3 [8], ZrO 2 [9], TiO 2 [10,11], SiO 2 [12], B 4 C [13], Si 3 N 4 [14], CNT [15], TiC [16], diamond like carbon (DLC) [17], etc. The enhanced properties and low cost of Al 2 O 3 particles in Ni matrix coating made it more popular.…”

Effect of Adding Nano Ag on Mechanical and Physical Properties of Cu–10% Fe Prepared by Powder Metallurgy Technique

“…Therefore, copper matrix composites got a great interest and are developed for many applications like heat exchangers, sensitive electrical circuits, brushes, springs, bearings, and bushing [5][6][7][8]. Among copper matrix composites, Cu-Fe composites got the attention of many researchers because of their low cost, compared with other metals beside their good mechanical properties [9][10][11][12][13][14][15][16]. Jerman, G.A.…”