Method for Producing Articles From Iridium Metal

• US 20180361500A1
• Filed: 06/07/2018
• Published: 12/20/2018
• Est. Priority Date: 12/09/2015
• Status: Active Grant

• Current Assignee: Ip Gerasimov Aleksej Leonidovich, Npo Metally Urala LLC
• Original Assignee: Ip Gerasimov Aleksej Leonidovich, OOO NPO "Metally Urala"
• Inventors: ALEKSANDROV, Evgenij P., KAZAKOV, Aleksandr S.
• Granted Patent: US 10,717,150 B2
• Time in Patent Office: Days
• CPC Class Codes: B22F 1/054 Nanosized particles
• CPC Class Codes: B22F 2202/01 Use of vibrations
• CPC Class Codes: B22F 2301/25 Noble metals, i.e. Ag Au, Ir, Os, Pd, Pt, Rh, Ru
• CPC Class Codes: B22F 2304/056 Particle size above 100 nm up to 300 nm
• CPC Class Codes: B22F 2998/10 Processes characterised by the sequence of their steps
• CPC Class Codes: B22F 2999/00 Aspects linked to processes or compositions used in powder metallurgy
• CPC Class Codes: B22F 3/04 by applying fluid pressure , e.g. by cold isostatic pressing [CIP]
• CPC Class Codes: B22F 3/093 using vibrations or friction
• CPC Class Codes: B22F 3/10 Sintering only
• CPC Class Codes: B22F 5/12 of wires of tubes B22F5/10
• CPC Class Codes: B23K 15/0026 Auxiliary equipment
• CPC Class Codes: B23K 15/0086 welding for purposes other than joining, e.g. built-up welding
• CPC Class Codes: B23K 15/0093 characterised by the properties of the materials to be welded
• CPC Class Codes: B23K 2103/08 Non-ferrous metals or alloys
• CPC Class Codes: B33Y 10/00 Processes of additive manufacturing
• CPC Class Codes: B82Y 40/00 Manufacture or treatment of nanostructures
• CPC Class Codes: C22C 1/0466 Alloys based on noble metals
• CPC Class Codes: C22C 2200/04 Nanocrystalline
• CPC Class Codes: C22C 5/04 Alloys based on a platinum group metal
• CPC Class Codes: C30B 35/002 Crucibles or containers

Abstract

A method for producing articles from iridium metal nanopowder. This invention relates to the sphere of powder metallurgy and may find application in the production of different articles from iridium. Technically, the object of the invention is development of a new technology. To this aim a method is proposed for the production of articles from iridium based on use of chemically pure metal of not less than 99.99 purity, produced by electron-beam remelting, characterized in that the required material is turned to nanopowder of less than 100 nm dispersity from which seamless articles of various configuration are molded by their compacting at room temperature followed by baking, with the resulting isotropic structure featuring 100-300 nm grain size and strength characteristics being improved by 200-300%.

Claims

1. A method for producing seamless articles from chemically pure iridium of no less than 99.99 wt.% purity and of an isotropic structure having a grain size between 100-300 nm the method comprising compacting a disperse powder of the iridium of no less than 100 nm under a pressure between 150-350 MPa at a room temperature followed by baking at a temperature between 1000-1350°

C.