Degradation on L-605 heat resistant alloy used for mono-propellant thrusters

Kenichi Kajiwara, Hideshi Kagawa, Daisuke Goto, Yoko Yamabe-Mitarai, Hideyuki Murakami, Yoshinori Ono, Daisuke Kuroda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Haynes25 (L-605) is a common heat resistant alloy used in mono-propellant structures and in screen materials for catalyst beds. The lifetime requirements for thrusters have expanded dramatically after studies conducted in the 1970s on mono-propellant materials used for achieving a long life. The material design had not changed for a long time, and L-605 was still used as thruster material due to its good heritage. Some important degradation incidents were found in the test-unit break-up inspection after the thruster life tests. The Japanese research team focused on the L-605 degradations found on the catalyst bed screen mesh used for mono-propellant thruster. The team analyzed the surface of the wire material and the cross-section of the wire screen mesh used in the life tests. The investigation showed that the degradation was caused by nitriding L-605 component elements. The team also suggested the installation of a platinum coating on the material surface as a L-605 nitric degradation measure.

Original languageEnglish
Title of host publication45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
Publication statusPublished - 2009 Dec 1
Externally publishedYes
Event45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit - Denver, CO, United States
Duration: 2009 Aug 22009 Aug 5

Publication series

Name45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

Other

Other45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
CountryUnited States
CityDenver, CO
Period09/8/209/8/5

ASJC Scopus subject areas

  • Aerospace Engineering
  • Control and Systems Engineering
  • Space and Planetary Science
  • Energy(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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  • Cite this

    Kajiwara, K., Kagawa, H., Goto, D., Yamabe-Mitarai, Y., Murakami, H., Ono, Y., & Kuroda, D. (2009). Degradation on L-605 heat resistant alloy used for mono-propellant thrusters. In 45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit (45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit).