TY - JOUR
AU - Tsutsui, Toshinari
AB - Reaction sintering of diamond was investigated using a starting mixed powder of purified natural graphite and a binary solvent-catalyst of the Fe-Ti system under high pressure (7G Pa) and temperature (1700°C) conditions for e treatment time of 1 to 15 min. Diamond sintered compact of about 100% conversion ratio from graphite todiamond was obtained with the binary solvent-catalyst content: 11.4 to 17.0 vol% (30 to 40wt%) Fe and 6.6 to 7.7vol% (10wt%) Ti. The sintered compact having the bulk density of 4.1 to 5.5g cm−3, consisted of diamond phase and metal carbide (Fe3C and TiCx) phase. The Vickers microhardnesm (under 1000 g load) mfthesintered diamond phase was >8OO0, while that ofthe metal carbide phase was 1000 to 2000. The transformation from graphite to diamond proceeded in a short time (< 1 min), which was followed by a particle joining between the formed diamond grains, when the densification would be attained at the reaction time of 15 min by pooling out the melt of carbon and solvent-catalyst.
TI - Reaction sintering of diamond using a binary solvent-catalyst of the Fe-Ti system
JF - Journal of Materials Science
DO - 10.1007/BF01132403
DA - 2005-01-26
UR - https://www.deepdyve.com/lp/springer-journals/reaction-sintering-of-diamond-using-a-binary-solvent-catalyst-of-the-1WPAObX2IM
SP - 1753
EP - 1757
VL - 22
IS - 5
DP - DeepDyve
ER -