Heat resisting metal fiber sintered body

Details Heat resisting metal fiber sintered body Heat resisting metal fiber sintered body

1996-09-25

2000-05-16

Thibodeau, Paul

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Making articles of indefinite length

419 43, 29 451, 29 452, 294191, 82 111, 83913, B22F 500, B22F 100, B21F 4500, B23P 1700

Patent

active

060633328

ABSTRACT:
The method of making the metal fiber sintered body includes making a coiled material by coiling a thin sheet of Fe--Cr--Al--La, Fe--Cr--Al--Y or Fe--Cr--Al--Ce stainless steel; making a tow of Fe--Cr--Al--La, Fe--Cr--Al--Y or Fe--Cr--Al--Ce continuous fibers by lathe turning an end face of the coiled material at a tool feed speed of from 5 to 40 .mu.m/rev; extending the tow in a width direction and cutting the tow with a roller type cutting assembly to form Fe--Cr--Al--La, Fe--Cr--Al--Y or Fe--Cr--Al--Ce stainless steel fibers having a fiber length of 20 to 200 mm; feeding the Fe--Cr--Al--La, Fe--Cr--Al--Y or Fe--Cr--Al--Ce stainless steel fibers having the fiber length of 20 to 200 mm to a conveyor; dropping the stainless steel fibers onto the conveyor and dispersing the stainless steel fibers by making an air current act on the stainless steel fibers; transporting the resulting sheet-shaped accumulation on the conveyor and compressing it to form a web and sintering the web. The stainless steel fibers have a thickness of from 7.5 to 180 .mu.m, a width of from 10 to 170 .mu.m and are from 17 to 21% by weight Cr, from 2.5 to 6.5% by weight Al, from 0.02 to 0.25% by weight of La, Y or Ce in addition to their iron content.

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patent: 5525423 (1996-06-01), Liberman et al.
Neely, John E., Practical Metallurgy and Materials of Industry, John Wiley & Sons, p. 208, 1979.

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