BONDING INTERFACE AND WEAR BEHAVIOR OF CBN GRAINS BRAZED USING NANOTiC POWDER MODIFIED FILLER

Transactions of Nanjing University of Aeronautics & Astronautics

Archive > Volume Issue 3 > 2010(3):232-238 Prev Next

BONDING INTERFACE AND WEAR BEHAVIOR OF CBN GRAINS BRAZED USING NANOTiC POWDER MODIFIED FILLER

Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials

Abstract:

A new kind of composite fillers, composed of AgCuTi alloy and nanoTi C powders, is utilized to braze cubic boron nitride (CBN) grains and tool substr ate. The bonding system, including the interfacial microstructure and reactive p roducts between CBN grains and filler layer, is observed by optical microscope a nd scanning electron microscope (SEM). Resistanttowear experiments of the br azed grains are performed. Results show that the nanoTiC powders evenly di stribute in the filler layer so that the resultants grow compactly and uniformly on the surface of CBN grain. This indicates that the chemical bond is established between CBN grains and nanoTiC modified filler. Accordingly, the bonding strength of the g rains is ensured. The CBN grains are worn smoothly without grain pullout.

Keywords:

Project Supported:

Clc Number: