Fabrication of Metallic Fibers with High Melting Point and Poor Workability by Unidirectional Solidification

Fabrication of Metallic Fibers with High Melting Point and Poor Workability by Unidirectional... Iridium (Ir) metal and Ir‐containing alloys have been widely used for a number of applications in various fields due to high melting point of Ir (≈2450 °C), high resistivity to an oxidation at high temperature, and high chemical stability. Particularly, in the single crystal growth industry, pure Ir metal and its alloys are considered as suitable crucible materials. Such crucibles have high melting point that makes them appropriate for the mass production of many functional single crystals with high melting point. Such crucibles are used in the Czochralski (Cz), Bridgman‐Stockbarger (BS), Edge‐defined Film‐fed Growth (EFG), and Micro‐pulling‐down (μ‐PD) methods. Additionally, Ir‐based alloys are promising materials for their application in spark plugs. The plugs made with Ir‐based central electrode are more efficient regarding fuel efficiency, as compared with those made with nickel‐based alloys. In addition, application of Ir‐Rh wires as thermocouple material for high temperature measurements has been already examined. Such Ir‐Rh‐based thermocouples are acceptable for accurate measurements of temperature exceeding 2000 °C.Most of Ir and Ir alloys products have been manufactured from ingots, which are produced by arc melting and casting. In the case of wire‐shaped products, the Ir and Ir alloys wires have been made from Ir columnar ingots by http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Engineering Materials Wiley

Fabrication of Metallic Fibers with High Melting Point and Poor Workability by Unidirectional Solidification

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Publisher
Wiley
Copyright
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
1438-1656
eISSN
1527-2648
D.O.I.
10.1002/adem.201700506
Publisher site
See Article on Publisher Site

Abstract

Iridium (Ir) metal and Ir‐containing alloys have been widely used for a number of applications in various fields due to high melting point of Ir (≈2450 °C), high resistivity to an oxidation at high temperature, and high chemical stability. Particularly, in the single crystal growth industry, pure Ir metal and its alloys are considered as suitable crucible materials. Such crucibles have high melting point that makes them appropriate for the mass production of many functional single crystals with high melting point. Such crucibles are used in the Czochralski (Cz), Bridgman‐Stockbarger (BS), Edge‐defined Film‐fed Growth (EFG), and Micro‐pulling‐down (μ‐PD) methods. Additionally, Ir‐based alloys are promising materials for their application in spark plugs. The plugs made with Ir‐based central electrode are more efficient regarding fuel efficiency, as compared with those made with nickel‐based alloys. In addition, application of Ir‐Rh wires as thermocouple material for high temperature measurements has been already examined. Such Ir‐Rh‐based thermocouples are acceptable for accurate measurements of temperature exceeding 2000 °C.Most of Ir and Ir alloys products have been manufactured from ingots, which are produced by arc melting and casting. In the case of wire‐shaped products, the Ir and Ir alloys wires have been made from Ir columnar ingots by

Journal

Advanced Engineering MaterialsWiley

Published: Jan 1, 2018

Keywords: ; ; ; ;

References

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