Hybrid metallic nanocomposites for extra wear-resistant diamond machining tools

Abstract

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Effect of WC Nanoparticles on the Microstructure and Properties of WC-Bronze-Ni-Mn Based Diamond Composites

“…Metal matrix composites reinforced by nanoparticles have promising properties, which is more suitable for a large number of functional and structural applications than other metal matrix strengthening methods, such as solution strengthening, work hardening and precipitation strengthening [14]. Recently, some researchers investigated metal matrix reinforced with nano-particles (nanotubes), finding out that adding nanosized reinforcement improved hardness, bending strength and wear resistance of matrix [21][22][23][24][25][26][27][28]. Ceramic (Al 2 O 3 , ZrO 2 , TiC, TiB 2 , WC, etc.)…”

“…nanoparticles can be used as reinforcing phase. But Al 2 O 3 , ZrO 2 , TiC and TiB 2 nanoparticles have low wettability with bonding phase bronze, which decreases composites properties [7,13,[22][23][24][25][26]. WC nanoparticles have excellent wettability with bronze and have good properties, namely high hardness, high wear resistance, good thermal and chemical stability.…”

Performance of diamond circular saws with innovative Fe-based binders

“…The second approach involved complex modification of the binder with nanoparticles of tungsten carbide (WC), hexagonal boron nitride (hBN) and carbon nanotubes (CNTs) [19]. Doping the binder with WC improves its mechanical properties and gives rise to self-assembling protective WC coatings on the surface of diamond single crystals directly during hot pressing (HP) of diamond segments [20].…”

Fe-based sintered matrix for diamond tools: microstructure, mechanical performance and crack initiation and propagation characteristics

“…However, Fe-based matrixes need higher sintered temperature than Cobased matrix, so diamond is more prone to graphitization, resulting in the performance degradation of diamond composites. Besides, Fe-based matrixes have some disadvantages such as low toughness and abrasive resistance [12,13]. These reasons result that Fe-based diamond tools usually has poor working efficiency and short service life compared with Co-based diamond tools.…”