Reactive infiltration processing of bulk and fiber-reinforced NiAl
Reactive infiltration processing was investigated in the NiAl system using nickel-powder and nickel-wire preforms. Inhomogeneous microstructures were often obtained with powder preforms which had high surface-to-volume ratio, low permeability and irregular infiltration paths. Homogeneous NiAl could be obtained with nickel-wire preforms which had lower surface-to-volume ratio, higher permeability and regular infiltration paths. NiAl composites reinforced with short molybdenum fibers and long tungsten and sapphire fibers were also fabricated by reactive infiltration.
- View record in Scopus
Keywords: Fiber reinforced metals ; Infiltration ; Mechanical permeability ; Metallographic microstructure ; Molybdenum ; Sapphire ; Tungsten ; Molybdenum fiber ; Reactive infiltration ; Sapphire fiber ; Surface to volume ratio ; Tungsten fiber ; Nickel alloys
Massachusetts Inst of Technology, Cambridge, United States
Record created on 2006-10-09, modified on 2016-08-08