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Journal:
Journal of the Japan Society of Powder and Powder Metallurgy


Issue Date:
2011


Abstract(summary):

SYNOPSISTo investigate the possibility to form the solid solution of (Ti, Mo)(C, N) with B, Al and Si, powder mixtures of 5 at% of B, Al and Si added (Ti0.9Mo0.1)(C0.55N0.45) prepared from Ti(C0.5N0.5), Mo2C, TiB2, AlN and Si3N4 were heat treated at 2473 K for 2 h in N2. Moreover these powder mixtures were hot pressed at 2473 K at 40 MPa for 2 h in N2 to form sintered bodies. By using these powders and sintered bodies whether the added elements dissolved in (Ti, Mo)(C, N) or not was investigated by means of X ray diffraction (XRD) and micro structural observation. The reactivity of the sintered bodies with pure Ni heat treated at 1673 K for 1 h in Ar was also studied.As a result heat treated (Ti, Mo)(C, N) powders did not form solid solutions with added elements. On the other hand hot pressed sintered bodies dissolved some amount of B and Si and resulted in to form solid solutions but the sintered body did not dissolve any Al. The reaction layer thickness of B and Si added (Ti, Mo)(C, N) sintered bodies with Ni were similar to that of (Ti, Mo)(C, N) without any added elements. The Al added (Ti, Mo)(C, N) sintered body showed thinner reaction layer than B and Si added ones.


Page:
447-451


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