Development of Low Melting Temperature Coating Materials for High Performance Diamonds Wire Saw : Effect of an Additive on Mechanical Properties

Abstract

The development of low melting temperature coating materials for brazing diamonds was attempted for diamonds wire saw for slicing single crystal silicon.The diamonds wire saw was made by brazing diamonds on SUS-304 wire with high strength for the sawing equipments. Since the degradation of SUS-304 wire was generally generated at higher temperature over 600°C, the high performance coating materials, composed of 47.5 wt.%Ag-25.5 wt.%Cu-27.0 wt.%Sn based materials, was developed by addition of Ni into them to improve the brittleness for SUS-304 wire. These results suggested that the coating material of (47.5 wt.%Ag-25.5 wt.%Cu-27.0 wt.%Sn)-1 wt.%Ni was the suitable brazing of the diamonds SUS-304 wire for sawing equipments.