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1. (WO2007001648) CORROSION RESISTANT METALLURGICAL POWDER COMPOSITIONS, METHODS, AND COMPACTED ARTICLES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/001648 International Application No.: PCT/US2006/018156
Publication Date: 04.01.2007 International Filing Date: 10.05.2006
IPC:
B22F 3/12 (2006.01) ,C22C 33/02 (2006.01) ,C22C 38/18 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3
Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
12
Both compacting and sintering
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
33
Making ferrous alloys
02
by powder metallurgy
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
Applicants:
HOEGANAES CORPORATION [US/US]; 1001 Taylors Lane Cinnaminson, New Jersey 08077, US (AllExceptUS)
SCHADE, Christopher, T. [US/US]; US (UsOnly)
Inventors:
SCHADE, Christopher, T.; US
Agent:
LEVIN, Gary, H. ; Woodcock Washburn LLP 2929 Arch Street - Suite 1200 Philadelphia, PA 19104-2891, US
Priority Data:
11/385,29221.03.2006US
60/692,38720.06.2005US
Title (EN) CORROSION RESISTANT METALLURGICAL POWDER COMPOSITIONS, METHODS, AND COMPACTED ARTICLES
(FR) COMPOSITIONS DE POUDRES METALLURGIQUES RESISTANT A LA CORROSION ET ARTICLES COMPACTES
Abstract:
(EN) Provided are corrosion resistant metallurgical powder compositions, corrosion resistant compacted articles prepared from metallurgical powder compositions, and methods of preparing the same. Corrosion resistant metallurgical powder compositions include as a major component, an iron-based powder and, as a minor component, alloy additives that include chromium, and carbon. Upon compaction and sintering, the iron-based powder and alloy additives form a dual phase alloy system. The dual phase alloy system is denoted by an admixed martensite and ferrite microstructure. This unique microstructure results in beneficial physical properties, such as for example, high strength, hardness, and ductility, impact energy, and fatigue endurance, while maintaining resistance to corrosion.
(FR) Compositions de poudres métallurgiques résistant à la corrosion, articles compactés résistant à la corrosion préparés à partir desdites compositions de poudres métallurgiques et procédés de préparation desdits articles. Les compositions de poudre métallurgiques résistant à la corrosion contiennent en tant que constituant principal une poudre à base de fer et en tant que constituant mineur des additifs sous forme d'alliages contenant du chrome et du carbone. Après compactage et frittage, la poudre à base de fer et les additifs sous forme d'alliages forment un système d'alliage à phase double. Ledit système d'alliage à phase double est caractérisé par une microstructure mélangée de martensite et de ferrite. Cette microstructure unique en son genre entraîne des propriétés physiques bénéfiques, telles que par exemple la grande résistance, la dureté et la ductilité, l'énergie de rupture et l'endurance à la fatigue, tout en préservant la résistance à la corrosion.
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP1909997