V.E.Ovcharenko
,
Baohai YU
,
S.G.Psakhie
材料科学技术（英文）
An experimental investigation were performed on the effect of the impulse electron-beam irradiation upon microstructure of the surface layer and on wear resistance of a cutting tool for sintered TiC/NiCr cermet. The results showed that the surface electron-beam treatment of the TiC/NiCr cermet is an efficient method for investigating the microstructure and phase composition in the surface layer of the powder composite and there are optimal regimes of electron-beam treatment, which ensure a substantial increase in the resistance of the cermet to wear during cutting of metals.
关键词:
Cermet
,
null
,
null
,
null
,
null
Weiping SHEN
,
Wenbin CAO
,
Changchun GE
,
E.H.Grigoryan
,
A.E.Sytschev
,
A.S.Rogachev
材料科学技术（英文）
The effects of Cu and Ni (x=0, 10, 20 and 40 wt pct) and compaction pressures (12, 24, 84 and 108 MPa) on combustion wave velocity and wave front shape for Ti-2B-Cu/Ni and 3Ti-2BN-Cu/Ni bilayered cermets were investigated by a video camera. Since the boiling point of Cu is lower, the wave velocities of specimens are slower. Due to the higher specific heat of Ni than that of Cu, the wave velocities of specimens was slowed down a lot with increasing the Ni diluent. The wave velocity differences of the specimens containing Ni are more than that of the bilayered specimens containing Cu. Wave velocities of the specimens containing Ni increased more than that of the specimens containing Cu when higher pressure was employed for green mixture. The more the wave velocity difference of the bilayer, the more curved the specimen.
关键词:
Combustion synthesis
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null
,
null
