Welding of unique and advanced alloys for space and high-temperature applications: welding and weldability of iridium and platinum alloys

David, Stan A.; Miller, Roger G.; Feng, Zhili

doi:10.1080/13621718.2016.1222255

Welding of unique and advanced alloys for space and high-temperature applications: welding and weldability of iridium and platinum alloys

Journal Article · Wed Aug 31 00:00:00 EDT 2016 · Science and Technology of Welding and Joining

DOI:https://doi.org/10.1080/13621718.2016.1222255· OSTI ID:1346633

David, Stan A. ^[1]; Miller, Roger G. ^[1]; Feng, Zhili ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Advances have been made in developing alloys for space power systems for spacecraft that travel long distances to various planets. The spacecraft are powered by radioisotope thermoelectric generators (RTGs) and the fuel element in RTGs is plutonia. For safety and containment of the radioactive fuel element, the heat source is encapsulated in iridium or platinum alloys. Ir and Pt alloys are the alloys of choice for encapsulating radioisotope fuel pellets. Ir and Pt alloys were chosen because of their high-temperature properties and compatibility with the oxide fuel element and the graphite impact shells. This review addresses the alloy design and welding and weldability of Ir and Pt alloys for use in RTGs.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1346633

Journal Information:: Science and Technology of Welding and Joining, Journal Name: Science and Technology of Welding and Joining Journal Issue: 3 Vol. 22; ISSN 1362-1718

Publisher:: Taylor & FrancisCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
Electron Beam
Gas Tungsten Arc
Iridium
Laser
Platinum
RTGs
Welding

Welding of unique and advanced alloys for space and high-temperature applications: welding and weldability of iridium and platinum alloys

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References (13)

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