Pyrophoric stainless steel

Details Pyrophoric stainless steel Pyrophoric stainless steel

1983-04-25

1986-10-07

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428681, 428685, 502301, 502337, B32B 1502

Patent

active

046159207

ABSTRACT:
Workpieces are very rapidly pack diffusion coated by using an excess of energizers in the pack, heating the retort containing the packed workpieces at a rate that brings the workpieces to diffusion-coating temperature and then completing the diffusion coating, all in less than 50 minutes, then cooling the retort. Workpiece can have top coating layer of aluminum flake covered by a layer of extremely fine alumina or silica in a magnesium chromate binder, to provide surface having roughness at least about 10 micro-inches smoother than before the top coating. More active diffusion coated products are also produced.

REFERENCES:
patent: 3560404 (1971-02-01), Kelkheim et al.
patent: 3809658 (1974-05-01), Csuros et al.
patent: 4066806 (1978-01-01), Speirs et al.
patent: 4179412 (1979-12-01), Inaba et al.
patent: 4292208 (1981-09-01), Baldi et al.
patent: 4435481 (1984-03-01), Baldi

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