Erosion of Carbon-Based Materials Under High-Fluence Heavy-Ion Irradiation

Abstract

Carbon-based materials are widely used in aerospace industry due to their strength, heat shielding properties, and a number of other specific characteristics [1]. To trace the radiation damage influence on the erosion regularities the sputtering yields Y of highly-oriented pyrolytic graphite (HOPG), polycrystalline graphites and one-dimensional composite material under high-fluence (10 18-10 19 ion/cm 2) 30 keV N 2 + and Ar + ions at the incidence angles from θ = 0 (normal incidence) to θ = 80 o , developed morphology and crystalline phase state from low temperatures (T ~ −180 o C)

Thermally actuated buckling beam memory: a non-volatile memory configuration for extreme space exploration environments

“…The effects of radiation on electronics will be seen in two forms. Previous studies show that properties of the materials used in spacecraft are susceptible to space environmental effects (Shimamura and Yamagata 2009;Andrianova et al 2011;Yeritsyan et al 2011;Ciofalo et al 2011). The large radiation doses encountered in the Jovian environment will make this problem more extreme.…”

Relief evolution of HOPG under high-fluence 30keV argon ion irradiation

“…Its mosaic structure is characterized by axis texture in the [0 0 1] direction normal to the plate surface; disorientation of the basal planes does not exceed 50 0 . The pronounced effect of temperature on ion-induced structural, emission, and morphological changes different from the respective ones for polycrystalline graphites is observed for HOPG upon high-fluence ion irradiation with Ar + and N 2 + ions with energies of tens of keV [3,4,[13][14][15][16][17][18]. In particular, it has been found that the sputtering yield is practically twofold lower upon sputtering of the basal plane of UPV-1T with 30-keV Ar + ions in comparison with Y values upon the sputtering of polycrystalline graphites in a wide range of ion incidence angles [17].…”

“…During last two decades there were a great number of publications where the ion-induced relief on the target surface was studied theoretically and experimentally (e.g. [3][4][5][6][7][8][9][10][11]). Most of theoretical works were performed analytically or by computer simulation.…”

“…The interaction of accelerated ions with carbon-based materials is of great interest for both technical applications and for refinement of the concept of the physical processes occurring upon ion bombardment [1][2][3][4]. Measurements of the sputtering yield Y for polycrystalline graphite at room temperature (RT) and under high fluences with 30-keV Ar + and N 2 + ions showed that the obtained values were approximately two fold higher than the sputtering yields obtained via the computer simulation of a flat target surface [5,6].…”

The In Situ Ion Irradiation Toolbox: Time-Resolved Structure and Property Measurements

“…8 Ion beams can also be used for implantation, 9 waveguide formation, 10 functionalization of interfaces and surfaces, or emulation of exposure to extreme radiation environments, such as outer space or nuclear reactors. [11][12][13][14] Post-irradiation examination (PIE) is typically conducted to examine the impact of irradiation on materials. Evaluating post-irradiation microstructural evolution can be done with a variety of microscopies from optical to electron, through compositional analysis with surface and bulk spectroscopies, and through a wide range of property testing platforms.…”