Liquid-phase sintering of TiC-Ni composites

Journal Article · Thu Dec 01 00:00:00 EST 1983 · J. Am. Ceram. Soc.; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1983.tb10998.x· OSTI ID:6461130

Miller, D J; Pask, J A

The sintering of TiC-Ni particle compacts was studied with specific attention to effects of processing conditions. Densification was progressively inhibited with the increasing additions of free carbon to the system. These results are explained on the basis of changes in the eutectic reactions in the system, reduced solubility of TiC in the Ni-rich liquid, and decreased wetting of the solid by the liquid. Presintering hydrogen heat treatment reduced the carbon content of the TiC-Ni compacts and led to reduction in sintering rates and elevated temperatures of liquid-phase formation. Wetting experiments with hydrogen-treated materials showed a time-dependent wetting angle. These results are discussed based on wetting theory and reactions predicted by the equilibrium ternary-phase diagram.

• Research Organization: Materials and Molecular Research Division of Lawrence Berkeley Laboratory, Berkeley, California
• OSTI ID: 6461130
• Journal Information: J. Am. Ceram. Soc.; (United States), Vol. 66:12
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
SINTERING
NICKEL ALLOYS
TITANIUM CARBIDES
CHEMICAL REACTION KINETICS
COMPACTS
EUTECTICS
HEAT TREATMENTS
HYDROGEN
PHASE DIAGRAMS
QUANTITY RATIO
WETTABILITY
ALLOYS
CARBIDES
CARBON COMPOUNDS
DIAGRAMS
ELEMENTS
FABRICATION
KINETICS
MATERIALS
NONMETALS
REACTION KINETICS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360301* - Composite Materials- Preparation & Fabrication- (-1987)