Mechanical alloying

Mechanical alloying is a powder metallurgy process in which metal powder is intensively mechanically treated and homogenized down to the atomic level. Mechanical alloying is particularly chosen where the material production is not possible by a smelting metallurgical process, since z. B. the chemical compounds are not soluble or the alloy components agglomerate in the solidification process .

The powders and balls to be ground are placed in an attritor and ground with a high expenditure of energy. The powder itself is severely deformed and subsequently welded, broken up and re-welded.

Application examples are e.g. B. the blades of the gas turbines , which are made from Oxide Dispersion Strengthened - nickel-based alloys and tubs made of ODS-alloyed platinum for melts that are operated at particularly high temperatures.

Individual evidence

↑ Werner Schatt, Klaus-Peter Wieters, Bernd Kieback (eds.): Powder metallurgy . Technologies and materials (= VDI book ). 2., arr. and exp. Edition. Springer-Verlag, Berlin, Heidelberg, New York 2007, ISBN 978-3-540-23652-8 , pp. 64 ( limited preview in Google Book search).
↑ Christof Lechner, Jörg Seume (ed.): Stationary gas turbines (= VDI book ). 2., rework. Edition. Springer-Verlag, Berlin 2010, ISBN 978-3-540-92787-7 , pp. 806 .
↑ Christian Edtmaier: Preparation and Properties of ODS Platinum . Poster: PM2004 Powdermetallurgy World Congress & Exhibition, Vienna; 17.-21. October 2004. In: H. Danninger, R. Ratzi (Eds.): PM2004 Powdermetallurgy World Congress & Exhibition . tape 4 . EPMA, Shrewsbury 2004, ISBN 1-899072-15-2 , pp. 797-803 . “ Platinum and platinum alloys of highest purity (> 99.90%) play an important role in the glass industry eg for high temperature construction parts. Important properties which predestine the platinum materials for this field of application are the high melting point, good corrosion resistance against aggressive glass melts, limited dissolution in glass melts and, therefore, negligible contamination of the glasses, limited contamination with elements from the glass melt, high mechanical strength and good ductility at extremely high temperatures, good formability and weldability and that they are fully recyclable ”

[1] Werner Schatt, Klaus-Peter Wieters, Bernd Kieback (eds.): Powder metallurgy . Technologies and materials (= VDI book ). 2., arr. and exp. Edition. Springer-Verlag, Berlin, Heidelberg, New York 2007, ISBN 978-3-540-23652-8 , pp. 64 ( limited preview in Google Book search).

[2] Christof Lechner, Jörg Seume (ed.): Stationary gas turbines (= VDI book ). 2., rework. Edition. Springer-Verlag, Berlin 2010, ISBN 978-3-540-92787-7 , pp. 806 .

[3] Christian Edtmaier: Preparation and Properties of ODS Platinum . Poster: PM2004 Powdermetallurgy World Congress & Exhibition, Vienna; 17.-21. October 2004. In: H. Danninger, R. Ratzi (Eds.): PM2004 Powdermetallurgy World Congress & Exhibition . tape 4 . EPMA, Shrewsbury 2004, ISBN 1-899072-15-2 , pp. 797-803 . “ Platinum and platinum alloys of highest purity (> 99.90%) play an important role in the glass industry eg for high temperature construction parts. Important properties which predestine the platinum materials for this field of application are the high melting point, good corrosion resistance against aggressive glass melts, limited dissolution in glass melts and, therefore, negligible contamination of the glasses, limited contamination with elements from the glass melt, high mechanical strength and good ductility at extremely high temperatures, good formability and weldability and that they are fully recyclable ”