Microstructure and Adhesion of Diamond Composites

Luciano José de Oliveira; Marcello Filgueira

doi:10.4028/www.scientific.net/MSF.727-728.269

Paper Titles

Investigation of Material Combinations Processed via Two-Component Metal Injection Moulding (2C-MIM)
p.248

Processing and Manufacturing of Metal Matrix Aluminum Alloys Composites Reinforced by Silicon Carbide and Alumina through Powder Metallurgy Techniques
p.254

Preparation of Metal Matrix Aluminum Alloys Composites Reinforced by Silicon Nitride and Aluminum Nitride through Powder Metallurgy Techniques
p.259

Synthesis and Characterization Nanoparticles ZnAl_1.94(Yb:Er)_0.06O₄ Functionalized with Chitosan
p.263

Microstructure and Adhesion of Diamond Composites
p.269

Influence of a TiС Coating on the Wear Resistance of Fe-Diamonds Composites
p.275

Obtention of Aluminium-Quasicrystal Composites by Mechanical Alloying
p.281

Physicochemical Analysis of Ti-Si-B Powder Alloys
p.287

Mechanical Properties of Composite AA2024 Matrix with Aluminium Carbide Dispersed by High Energy Milling
p.293

HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Microstructure and Adhesion of Diamond Composites

Microstructure and Adhesion of Diamond Composites

Abstract:

Typically, diamond tools produced by Powder Metallurgy are very effective in cutting processes in general, because are used diamond composites for cutting action. In these tools, diamond abrasive grains are embedded in the metal matrix. Some of the most common examples of these tools are the cutting discs, abrasive crowns, drills and diamond wires. This work studies the Fe-Cu-Co-diamonds composites processed by the powder metallurgy techniques powders mixing and hot pressing at 850°C/35MPa/3 min. Microstructural analysis of composites as well as metal matrix-diamond adhesion was made by scanning electron microscopy-SEM after abrasion resistance tests. Compression tests were carried out to evaluate the elastic properties of composites, i.e., modulus of elasticity (E) and yield stress (σ_e), aiming at the assessment of the metal matrix-diamond adhesion. It was found satisfactory adhesion for the composites M2 and M3, with values σ_e = 360 MPa and 375 MPa, respectively. Keywords: diamond tools, powder metallurgy, composite Fe-Cu-Co-diamond.