EP 0236823 B1 19910724 - METALLIC SEMI-FINISHED PRODUCT, PROCESS FOR ITS MANUFACTURE AND USES OF THE SEMI-FINISHED PRODUCT
Title (en)
METALLIC SEMI-FINISHED PRODUCT, PROCESS FOR ITS MANUFACTURE AND USES OF THE SEMI-FINISHED PRODUCT
Publication
Application
Priority
DE 3606804 A 19860301
Abstract (en)
[origin: US4798631A] The invention relates to a metallic semi-finished product based on iron and/or nickel and/or cobalt and containing 2 to 16% of aluminum, 12 to 30% of chromium and at least one highly reactive element X, in particular from the group consisting of the rare earth metals and/or their dispersed oxides. The characteristic feature of the invention is that metallic columnar crystals are formed at least in the surface region of the semi-finished product and columnar crystals consisting predominantly of aluminum oxide and/or chromium oxide grow out of the said metallic columnar crystals, the axes of the two types of columnar crystals being predominantly at right angles to the geometric surface of the semi-finished product.
IPC 1-7
IPC 8 full level
B22D 11/06 (2006.01); B01J 32/00 (2006.01); C22C 19/05 (2006.01); C22C 19/07 (2006.01); C22C 38/18 (2006.01); C23C 8/16 (2006.01); C23C 8/18 (2006.01); C30B 29/62 (2006.01)
CPC (source: EP KR US)
C22C 19/05 (2013.01 - EP US); C22C 19/07 (2013.01 - EP US); C22C 38/18 (2013.01 - EP US); C22C 38/54 (2013.01 - KR)
Citation (examination)
- EP 0232793 A1 19870819 - NIPPON STEEL CORP [JP]
- K.N. STRAFFORD, "High Temperature Technology, vol. 1, No. 6, Nov. 1983, p. 307-318
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0236823 A2 19870916; EP 0236823 A3 19880525; EP 0236823 B1 19910724; AT E65552 T1 19910815; DE 3606804 A1 19870910; DE 3606804 C2 19890330; DE 3771526 D1 19910829; JP H0660386 B2 19940810; JP S62290857 A 19871217; KR 870009050 A 19871023; KR 940003503 B1 19940423; US 4798631 A 19890117
DOCDB simple family (application)
EP 87102472 A 19870221; AT 87102472 T 19870221; DE 3606804 A 19860301; DE 3771526 T 19870221; JP 4414487 A 19870228; KR 870001778 A 19870228; US 1854587 A 19870225