Surface patterns formation by ion irradiation of PAN based carbon fibers

被引：9

作者：

Andrianova, N. N. ^{[1
]}

Borisov, A. M. ^{[1
,2
]}

Mashkova, E. S. ^{[3
]}

Ovchinnikov, M. A. ^{[3
]}

Timofyev, M. A. ^{[3
]}

Vysotina, E. A. ^{[4
]}

机构：

[1] Natl Res Univ, Moscow Aviat Inst, Moscow 125993, Russia

[2] Moscow State Technol Univ STANKIN, Moscow 127994, Russia

[3] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia

[4] Keldysh Res Ctr, Moscow 125438, Russia

来源：

VACUUM | 2021年 / 188卷

关键词：

PAN based Carbon fibers; High-fluence He+ and Ar+ irradiation; Ion-induced surface patterns; Twinning; Raman spectra; Scanning electron microscopy; CORRUGATION; REGULARITIES; EROSION;

D O I：

10.1016/j.vacuum.2021.110177

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Surface patterns on PAN based carbon fibers under 3 and 30 keV He+ and 30 keV Ar+ ions irradiation were experimentally studied. It has been found that the depth distributions v(x) of the number of displacements per atom (dpa) have a strong effect on the surface patterns on PAN-based carbon fibers. For not steady state profiles v(x), a ridge-like structure oriented along the fibers is formed on the surface. At sufficiently high irradiation fluences with a steady-state profile v(x), a corrugated structure is formed with corrugations transverse to the fiber axis. The corrugation effect is explained by twinning during plastic deformation of fiber shell crystallites caused by radiation-induced dimensional changes and mechanical stresses.

引用

页数：5

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