Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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A Study on the Oxidation Behavior of Metal Materials Applicable to Oxidizer Rich Pre-Combustor

산화제 과잉 연소기에 활용 가능한 금속재료의 산화 거동에 관한 연구

  • Shin, Donghae (Department of Aerospace Engineering, Chungnam National University) ;
  • Yu, Isang (Department of Aerospace Engineering, Chungnam National University) ;
  • Shin, Minku (Department of Aerospace Engineering, Chungnam National University) ;
  • Ko, Youngsung (Department of Aerospace Engineering, Chungnam National University) ;
  • So, Younseok (Engine Test and Evaluation Team, Korea Aerospace Research Institute) ;
  • Han, Yeoungmin (Engine Test and Evaluation Team, Korea Aerospace Research Institute)
  • Received : 2018.10.15
  • Accepted : 2019.02.11
  • Published : 2019.04.01
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Abstract

Metals exposed to high temperature/high pressure/oxidant excess environment of an oxygen excess pre-combustor may undergo rapid oxidation. In this study, the test facility to simulate the high temperature/high pressure/oxidant excess environment was constructed and the oxidation resistance evaluation was carried out for various metal materials. As a result, the discoloration of the metallic materials, the change in the surface roughness and the peeling of the metal surface were observed, and the weight change was also observed. The resulst showed that oxidation-resistant coating of a metal material of the combustor is indispensably required, and the use of XM-19, which has the highest content of Cr and Ni, is expected to provide more structural stability.

산화제 과잉 예연소기는 고온/고압/산화제 과잉의 환경이며, 이러한 환경에 금속은 급격한 산화가 발생할 수 있다. 본 연구에서는 고온/고압/산화제 과잉의 환경을 모사할 수 있는 설비를 구축하고 여러 금속 재질에 대해 내산화성 평가를 진행하였다. 그 결과, 온도가 높고 압력이 높은 조건에서 금속재질의 변색, 표면 거칠기에 변화와 금속 표면의 박리 현상이 관찰되었고 무게 변화도 확인하였다. 모든 실험 결과를 종합하였을 때 산화제 과잉 예연소기는 금속 재질에 대한 내산화 코팅이 필수적으로 요구되며, 사용 금속으로는 Cr과 Ni의 함유량이 가장 높은 XM-19를 활용하는 것이 좀 더 구조적 안정성을 확보할 수 있을 것으로 판단한다.

Keywords

References

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