Volume 20, Issue 1 p. 395-409
RESEARCH ARTICLE

Mechanical integrity of ceramic coatings on Kapton made by a dry aerosol deposition of lunar mare simulant

Robert Calvo

Robert Calvo

Materials & Metallurgical Engineering Department, New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA

Intel Corporation, Hillsboro, OR, USA

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Paul Fuierer

Corresponding Author

Paul Fuierer

Materials & Metallurgical Engineering Department, New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA

Correspondence

Paul Fuierer, Materials & Metallurgical Engineering Department, New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM 87801, USA.

Email: [email protected]

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First published: 29 September 2022
Citations: 1

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Abstract

The purpose of this paper is to demonstrate the use of lunar regolith and the dry aerosol deposition (DAD) method to produce ceramic coatings on polyimide polymer, and to test their mechanical integrity. Ceramic films were produced on Kapton substrates using a custom-built DAD system and lunar mare simulant (LMS) feedstock. Ultrafine grains and impact densification were confirmed using atomic force and electron microscopy. Mechanical properties of the DAD–LMS Kapton samples were evaluated with indentation, tensile, and mandrel bend tests. DAD–LMS coatings tripled the hardness and doubled the indentation modulus of the Kapton surface. Coatings 3–16 µm thick did not have a predictable effect on the ultimate tensile strength or elongation to failure; however, the apparent modulus of elasticity did increase. The coatings were able to withstand significant bending before damage, with critical bend radii of 5 and 1.5 mm for 7.5 µm and 120 nm thicknesses, respectively. Modest heat treatment was shown to reduce the bending strain of coated substrates. Advanced ceramic coatings are of interest for the protection of space and satellite polymers from micrometeoroid impacts, radiation, and atomic oxygen. Lunar posts and habitats will require the development of space manufacturing techniques and in situ resource utilization.

CONFLICT OF INTEREST

The authors declare that there is no conflict of interest that could be perceived as prejudicing the impartiality of the research reported.