US 11,685,982 B2
Free graphite containing powders
Mathieu Boisvert, Waupun, WI (US); Gilles L'Esperance, Candiac (CA); Philippe Beaulieu, Coventry (GB); and Denis B. Christopherson, Jr., Waupun, WI (US)
Assigned to Tenneco Inc., Lake Forest, IL (US); and Le Corporation de L'Ecole Polytechnique De Montreal, Montreal (CA)
Filed by FEDERAL-MOGUL LLC, Southfield, MI (US); and LA CORPORATION DE L'ECOLE POLYTECHNIQUE DE MONTREAL, Montreal (CA)
Filed on Oct. 16, 2017, as Appl. No. 15/784,587.
Claims priority of provisional application 62/409,244, filed on Oct. 17, 2016.
Prior Publication US 2018/0105906 A1, Apr. 19, 2018
Int. Cl. C22C 38/54 (2006.01); C22C 33/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/52 (2006.01); B22F 1/00 (2022.01); B22F 3/10 (2006.01); B22F 9/08 (2006.01)
CPC C22C 38/54 (2013.01) [B22F 3/1035 (2013.01); B22F 9/082 (2013.01); C22C 33/0257 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/52 (2013.01); B22F 1/00 (2013.01); B22F 2301/35 (2013.01); B22F 2998/10 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A material, comprising:
a powder metal which is atomized,
the powder metal including iron in an amount of at least 50 wt. %, based on the total weight of the powder metal,
the powder metal including carbon (C) in an amount of 2.2 wt. % to 4.8 wt. %, copper (Cu) in an amount up to 4 wt. %, and silicon (Si) in an amount of 2.5 wt. % to 6.0 wt. %, based on the total weight of the powder metal,
the powder metal including cobalt in an amount of at least 1 wt. % and/or tin in an amount of at least 0.5 wt. %, based on the total weight of the powder metal,
the powder metal optionally including at least one of nickel (Ni), aluminum (Al), sulfur (S), phosphorous (P), boron (B), nitrogen (N), chromium (Cr), manganese (Mn), molybdenum (Mo), vanadium (V), niobium (Nb), tungsten (W), titanium (Ti), tantalum (Ta) zirconium (Zr), zinc (Zn), strontium (Sr), calcium (Ca), barium (Ba) magnesium (Mg), lithium (Li), sodium (Na), and potassium (K), and
wherein the powder metal is heat treated and/or sintered, and the heat treated and/or sintered powder metal contains free graphite.