DOI: https://doi.org/10.20535/2521-1943.2020.0.219979

Surface modification of flat cable conductors: a path to withstand the aggressive space environment

Jacob Kleiman, Zelina Iskanderova

Abstract


A novel ion-beam surface treatment process with simultaneous surface renewal (IB/SSR) providing charge-dissipative properties to the treated surfaces was developed at ITL and successfully used for treatment of both sides of variously shaped and sized flat conductor cables (FCC) that are being used in various applications in aerospace, space and commercial programs. The results of surface resistivity (SR) measurements of the front side of FCC’s  used as interconnects in solar panel arrays on satellites in Geostationary (GEO) orbit averaged around 10 MΩ/sq for short FCC units and around 8 MΩ/sq for long units. The SR values for back sides averaged around 18 MΩ/sq for both short and long FCCs. These values remained unchanged during ~ 1 month storage of the treated FCCs at lab conditions, and after a following 2-2.5 year’s storage. 

Extended long-term ground-based GEO environment simulation testing experiments (15 years space equivalent) that involved simultaneous exposure to all three GEO environmental factors, i.e. protons, electrons, and UV have been performed on two specially selected FCC sets. These sets included pristine and IB/SSR-treated FCCs, with both front and back FCC surfaces being exposed. It was demonstrated that the surface conductivity obtained on the insulating space polymer films is almost insensitive to space radiation during the 15 years in GEO. It was also shown that the long-term influence of GEO radiation on thermal optical characteristics of both FCCs sides does not significantly differ for pristine and ion-beam treated samples.

Keywords


Surface resistivity, charge dissipation, flat cable conductor (FCC), GEO Space environment, ion beam treatment

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References


Z. Iskanderova and J. Kleiman, Ion-beam Treatment Technology for Space FCC’s to Provide Charge Dissipative Surfaces Resistant to GEO Environment – Final Report to Airbus Defence and Space, Contract G30/4509250924, ITL- 020911-11021, 2011.

J.I. Kleiman, Z. Iskanderova, V. Issoupov and F. Bussieres, “CARBOSURFTM - Surface Modification Technology for Charge Dissipative and RF-transparent GEO Durable Space Polymers”, in Protection of Materials and Structures from Space Environment, Proceedings of the 9-th Int. Conference, Canada, pp.588-599, 2008. https://doi.org/10.1063/1.3076874

Z. Iskanderova, J. Kleiman, F. Bussieres, US Patent No. 9,174,396 B2, Nov 3, 2015

J.I. Kleiman et al., Sodhi Ion-beam Treatment for Enhancement of Durability and Surface Conductivity of Space Polymers: Results, Analysis, Mechanisms, in Protection of Materials and Structures from the Space Environment, Springer, Astrophysics and Space Science Proceedings 32, pp. 317-326, 2013. https://doi.org/10.1007/978-3-642-30229-9_29

U.F. Arifov, Z.A. Iskanderova and T.D. Radzhabov, Method of multilayered structures formation by simultaneous or alternating films deposition and ion bombardment, Patent of USSR, # 471631, 25.05. 1975 (In Russian). (1975)

Z.A. Iskanderova, T.D. Radjabov, E. O. Arutunova and G.R. Rakhimova, Thin film simultaneous deposition on membrane surface for permeability increase of gas being implanted (theoretical consideration), Vacuum, Vol. 35, Issue 1, pp.5–8, January,1985. https://doi.org/10.1016/0042-207X(85)90068-5

Z.A. Iskanderova et al., “A Model of a Combined Film Deposition and Ion Bombardment for Coatings Formation”, Proceedings of MRS Fall Meeting, vol. 128, 1988. https://doi.org/10.1557/PROC-128-169

ASTM Standard D257-99, “Standard Test Methods for DC resistance or conductance of insulating materials”, V.15.03

International Standard ISO 15856:2010(E): Space systems – space environment – simulation guidelines for radiation exposure of non-metallic materials

I.A. Smirnov, “Radiation-induced conductivity of polymers at long-time radiation exposure”, PhD Thesis, Russia (In Russian), 2006.


GOST Style Citations


[1] Z. Iskanderova and J. Kleiman, Ion-beam Treatment Technology for Space FCC’s to Provide Charge Dissipative Surfaces Resistant to GEO Environment – Final Report to Airbus Defence and Space, Contract G30/4509250924, ITL- 020911-11021, 2011.

[2] J.I. Kleiman, Z. Iskanderova, V. Issoupov and F. Bussieres, “CARBOSURFTM - Surface Modification Technology for Charge Dissipative and RF-transparent GEO Durable Space Polymers”, in Protection of Materials and Structures from Space Environment, Proceedings of the 9-th Int. Conference, Canada, pp.588-599, 2008. https://doi.org/10.1063/1.3076874

[3] Z. Iskanderova, J. Kleiman, F. Bussieres, US Patent No. 9,174,396 B2, Nov 3, 2015

[4] J.I. Kleiman et al., Sodhi Ion-beam Treatment for Enhancement of Durability and Surface Conductivity of Space Polymers: Results, Analysis, Mechanisms, in Protection of Materials and Structures from the Space Environment,  Springer, Astrophysics and Space Science Proceedings 32, pp. 317-326, 2013. https://doi.org/10.1007/978-3-642-30229-9_29

[5] U.F. Arifov, Z.A. Iskanderova and T.D. Radzhabov, Method of multilayered structures formation by simultaneous or alternating films deposition and ion bombardment, Patent of USSR, # 471631, 25.05. 1975 (In Russian). (1975)

[6] Z.A. Iskanderova, T.D. Radjabov, E. O. Arutunova and G.R. Rakhimova,  Thin film simultaneous deposition on membrane surface for permeability increase of gas being implanted (theoretical consideration), Vacuum, Vol. 35, Issue 1, pp.5–8, January,1985. https://doi.org/10.1016/0042-207X(85)90068-5

[7] Z.A. Iskanderova et al., “A Model of a Combined Film Deposition and Ion Bombardment for Coatings Formation”, Proceedings of MRS Fall Meeting, vol. 128, 1988. https://doi.org/10.1557/PROC-128-169

[8] ASTM Standard D257-99, “Standard Test Methods for DC resistance or conductance of insulating materials”, V.15.03

[9] International Standard ISO 15856:2010(E): Space systems – space environment – simulation guidelines for radiation exposure of non-metallic materials

[10] I.A. Smirnov, “Radiation-induced conductivity of polymers at long-time radiation exposure”, PhD Thesis, Russia (In Russian), 2006.





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