Method for the manufacture of an object of a powdered material b

Details Method for the manufacture of an object of a powdered material b Method for the manufacture of an object of a powdered material b

1988-02-12

1988-10-18

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Consolidation of powder prior to sintering

419 39, 419 49, 264 65, 264570, B22F 100

Patent

active

047786507

ABSTRACT:
In the manufacture of an object of a powdered material by isostatic pressing of a body (10) preformed from the powdered material with a gaseous pressure medium, the preformed body is provided with a casing (13) of glass which is made gas-impenetrable by heating before carrying out the isostatic pressing. Inside the glass casing there is arranged on the preformed body an intermediate layer (12) which counteracts the penetration of molten glass from the casing into the preformed body. The intermediate layer comprises a layer of one or more intermediate phases in the system Al.sub.2 O.sub.3 --SiO.sub.2, for example mullite 3Al.sub.2 O.sub.3.2SiO.sub.2, or a layer containing one or more such intermediate phases as main constituent. In a preferred embodiment a layer of boron nitride is arranged inside the intermediate layer. In a preferred embodiment, the powdered object consists of aluminium oxide or an aluminium oxide-based ceramic.

REFERENCES:
patent: 4446100 (1984-05-01), Adlerborn et al.
patent: 4478789 (1984-10-01), Adlerborn et al.
patent: 4568516 (1986-02-01), Adlerborn et al.
patent: 4656002 (1987-04-01), Lizenby et al.
patent: 4717535 (1988-01-01), Adlerborn et al.

Affiliated with

Also associated with

Rating

Method for the manufacture of an object of a powdered material b does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the manufacture of an object of a powdered material b, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the manufacture of an object of a powdered material b will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1193987