Method for making a porous sintered material

Details Method for making a porous sintered material Method for making a porous sintered material

1996-04-19

1998-12-15

Mai, Ngoclan

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Heat and pressure simultaneously to effect sintering

419 2, B22F 104

Patent

active

058505903

ABSTRACT:
The invention provides a method for making a novel porous sintered material according to an HIP (Hot Isostatic Press) molding technique usually used for the purpose of obtaining defect-free and highly dense powder products. In the method of the invention, a capsule containing a starting powder in a hermetically sealed condition is heated according to a predetermined temperature pattern and is also subjected to hot isostatic pressing while a pressure is arrived at a maximum pressure level substantially in coincidence with commencement of a sintering temperature-applying period in the temperature pattern and is gradually lowered from the maximum pressure level during the sintering temperature-applying period. By the method, excessive densification is suppressed and the resulting sintered material has a required porosity and is provided with pores open to outside in the inside thereof, along with good strength and surface processability.

REFERENCES:
patent: 5126103 (1992-06-01), Ishizaki et al.
patent: 5152828 (1992-10-01), Katoh
patent: 5625861 (1997-04-01), Nishi et al.
patent: 5678162 (1997-10-01), Barlow et al.

Affiliated with

Also associated with

Rating

Method for making a porous sintered material 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 making a porous sintered material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making a porous sintered material will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1465250