Optimization of properties of binder treated ferrous powder premixes: Y. Trudel et al. (Quebec Metal Powders, Montreal, Canada)

Abstract

A series of pin-on-disk wear test has been performed for nine different abrasive grains, including diamond and cubic boron nitride(CBN) grains, against various hard materials such as stellite, sintered alumina, and ferrite, etc. The wear test was made at the speeds of 300 to l, 200m/min under the loads of 2.5 and 1.5N. Thus, the relative wear ranking of strain was determined in relation to disk material. The effect of speed on wear was also studied. It was evident that quite large difference in wear values was found between grain types, and also between disk materials. It was also known how the superhard grains are superior to general grains. The speed dependency of wear rate was great, but it depends on disk material. These results on wear have been discussed on the basis of the results obtained on SEM-micrographs, frictional coefficient, Disk wear, and wear debris. Many thermal cracks were observed on the wear surface of ?rain, specially when the sintered carbide, sintered alumina, and sintered 3iC disks were used.