Sulfur treatment of magnesium-contaminated Fe-Cr-Al alloy for im

Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

148325, 148333, 140540, 420 42, 420 62, 420 79, 420 87, 420103, C21D 800

Patent

active

051299593

ABSTRACT:
A method for producing aluminum-containing ferritic stainless steel from a magnesium-contaminated melt such that the steel is suitable for growing oxide whiskers to cover the surface thereof is disclosed. The method comprises adding sulfur to the contaminated melt in an amount sufficient to increase the sulfur content not less than 1.3 time the magnesium content, whereupon the sulfur reacts with the magnesium to render the magnesium inert to whisker growth. The method also preferably comprises an addition of titanium, zirconium of hafnium in amounts sufficient to react with residual sulfur in excess of the amount required for magnesium reaction, thereby mitigating the adverse affect of sulfur on oxide adhesion.

REFERENCES:
patent: 4052202 (1977-10-01), Luyekx
patent: 4318828 (1982-03-01), Chapman
patent: 4331631 (1982-05-01), Chapman et al.
patent: 4588449 (1986-05-01), Sigler
patent: 4661169 (1987-04-01), Aggen et al.
patent: 4867811 (1989-09-01), Wakiyama et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Sulfur treatment of magnesium-contaminated Fe-Cr-Al alloy for im does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sulfur treatment of magnesium-contaminated Fe-Cr-Al alloy for im, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sulfur treatment of magnesium-contaminated Fe-Cr-Al alloy for im will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-332584

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.