Functionally gradient material of the system Ni-MgO, Ni-NiO, Ni-Si3N4 or Al-AlN, by pressureless sintering

Conference · Sat Aug 01 04:00:00 EDT 1992 · Ceramic Engineering and Science Proceedings; (United States)

OSTI ID:7292845

Atarashiya, Koji; Kurokawa, Kazuya; Nagai, Tadao; Uda, Masahiro

Generally speaking, the preparation of FGM-blocks, especially in the metal-nitride systems, by the method of powder metallurgy needs an extremely high temperature and high pressure. But, in this work using a ductile nickel metal powder or an ultrafine particle, the FGM-blocks were easily prepared using a powder metallurgy at a lower temperature. A mixture of a metallic powder and a non-metallic powder whose contents were gradually changed was pressed in a steel die under pressure of 20-32 MPa. These green compacts were heated at 900-1573 K in controlled atmosphere under null pressure. The FGM-blocks prepared by this method were characterized by their properties and were used in joinings. The joinings of metal/FGM/ceramics, metal/FGM and ceramics/FGM were completely accomplished at 900-1573 K. 6 refs.

• OSTI ID: 7292845
• Report Number(s): CONF-920144--
• Conference Information: Journal Name: Ceramic Engineering and Science Proceedings; (United States) Journal Volume: 13:7-8
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM
ALUMINIUM COMPOUNDS
ALUMINIUM NITRIDES
CERMETS
CHALCOGENIDES
COMPOSITE MATERIALS
DISPERSIONS
ELEMENTS
FABRICATION
HOT WORKING
INTERFACES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATERIALS
MATERIALS WORKING
METALLURGY
METALS
MIXTURES
NICKEL
NICKEL COMPOUNDS
NICKEL OXIDES
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PNICTIDES
POWDER METALLURGY
POWDERS
PRESSING
SILICON COMPOUNDS
SILICON NITRIDES
SINTERING
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS