Environmental resistance in the Mars atmosphere

Bruce A. Pint; Peter F. Tortorelli

doi:10.1063/1.1867144

Environmental resistance in the Mars atmosphere

Bruce A. Pint, Peter F. Tortorelli

Materials Science and Technology Div

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

The atmosphere of Mars is ∼6mbar of total pressure (compared to ∼1 bar on Earth) and 95%CO₂. Thermodynamic calculations have been made of the partial pressure of oxygen as a function of temperature assuming various impurities in the remaining 5%. These oxygen pressures are sufficient to oxidize most common metals in the 900-1300K range. Therefore, oxidation resistance will be a concern for materials of construction in a high temperature fission reactor on Mars. An additional environmental resistance consideration is internal carburization during exposures in CO₂. The effect of low pressure CO₂ exposures on the mechanical properties of austenitic alloys is being investigated.

Original language	English
Title of host publication	Space Technology and Applications International Forum - STAIF 2005, Including Co-located Conferences
Pages	279-284
Number of pages	6
DOIs	https://doi.org/10.1063/1.1867144
State	Published - 2005
Event	Space Technology and Applications International Forum: Forward with a New Age of Exploration, STAIF 2005 - Albuquerque, NM, United States Duration: Feb 13 2005 → Feb 17 2005

Publication series

Name	AIP Conference Proceedings
Volume	746
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	Space Technology and Applications International Forum: Forward with a New Age of Exploration, STAIF 2005
Country/Territory	United States
City	Albuquerque, NM
Period	02/13/05 → 02/17/05

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10.1063/1.1867144

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title = "Environmental resistance in the Mars atmosphere",

abstract = "The atmosphere of Mars is ∼6mbar of total pressure (compared to ∼1 bar on Earth) and 95%CO2. Thermodynamic calculations have been made of the partial pressure of oxygen as a function of temperature assuming various impurities in the remaining 5%. These oxygen pressures are sufficient to oxidize most common metals in the 900-1300K range. Therefore, oxidation resistance will be a concern for materials of construction in a high temperature fission reactor on Mars. An additional environmental resistance consideration is internal carburization during exposures in CO2. The effect of low pressure CO2 exposures on the mechanical properties of austenitic alloys is being investigated.",

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doi = "10.1063/1.1867144",

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series = "AIP Conference Proceedings",

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Pint, BA & Tortorelli, PF 2005, Environmental resistance in the Mars atmosphere. in Space Technology and Applications International Forum - STAIF 2005, Including Co-located Conferences. AIP Conference Proceedings, vol. 746, pp. 279-284, Space Technology and Applications International Forum: Forward with a New Age of Exploration, STAIF 2005, Albuquerque, NM, United States, 02/13/05. https://doi.org/10.1063/1.1867144

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N2 - The atmosphere of Mars is ∼6mbar of total pressure (compared to ∼1 bar on Earth) and 95%CO2. Thermodynamic calculations have been made of the partial pressure of oxygen as a function of temperature assuming various impurities in the remaining 5%. These oxygen pressures are sufficient to oxidize most common metals in the 900-1300K range. Therefore, oxidation resistance will be a concern for materials of construction in a high temperature fission reactor on Mars. An additional environmental resistance consideration is internal carburization during exposures in CO2. The effect of low pressure CO2 exposures on the mechanical properties of austenitic alloys is being investigated.

AB - The atmosphere of Mars is ∼6mbar of total pressure (compared to ∼1 bar on Earth) and 95%CO2. Thermodynamic calculations have been made of the partial pressure of oxygen as a function of temperature assuming various impurities in the remaining 5%. These oxygen pressures are sufficient to oxidize most common metals in the 900-1300K range. Therefore, oxidation resistance will be a concern for materials of construction in a high temperature fission reactor on Mars. An additional environmental resistance consideration is internal carburization during exposures in CO2. The effect of low pressure CO2 exposures on the mechanical properties of austenitic alloys is being investigated.

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T2 - Space Technology and Applications International Forum: Forward with a New Age of Exploration, STAIF 2005

Y2 - 13 February 2005 through 17 February 2005

ER -

Environmental resistance in the Mars atmosphere

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