Eventos Anais de eventos
CONEM 2018
X Congresso Nacional de Engenharia Mecânica
PROCESSING AND CHARACTERIZATION OF PM DIAMOND BEADS
Submission Author:
MARCELLO FILGUEIRA , RJ , Brazil
Co-Authors:
MARCELLO FILGUEIRA
Presenter: MARCELLO FILGUEIRA
doi://10.26678/ABCM.CONEM2018.CON18-0578
Abstract
The cutting operations for non-metallic materials, such as ceramics, rock, concrete, requires the use of diamond tools. These tools are produced by the techniques of powder metallurgy, comprised by diamond crystals embedded into a metal matrix. This work studies the microstructural characterization of diamond composites processed according to industrial powder metallurgical route: sintering by hot pressing at 800°C/35MPa/ 3 minutes. For such, commercial ferritic alloy DIABASE-V21 and diamond crystals with average grain 425μm were used. X-ray energy spectroscopy (EDX), X-ray diffraction (XRD), energy dispersive spectrometry (EDS) and scanning electron microscopy (SEM) were performed aiming to evaluate the structure and microstructure resulting from the sintering process. The results showed that this alloy presented a favoring formation of solid solutions, which enabled a adhesion improvement of diamonds in the metal matrix. Wear tests were performed using a physical simulator, comparing results with a commercial bead.
Keywords
diamond, cutting tool, BINDER, HOT PRESSING
