Surface behavior of 16Cr3Al ODS steel-Effects of high laser intensity 1014 W/cm2 in ambiences of air, helium and vacuum

被引：3

作者：

Trtica, M. ^{[1
]}

Stasic, J. ^{[1
]}

Limpouch, J. ^{[2
]}

Gavrilov, P. ^{[2
]}

Chen, X. ^{[3
]}

Ciganovic, J. ^{[1
]}

机构：

[1] Univ Belgrade, Inst Nucl Sci VINCA, POB 522, Belgrade 11001, Serbia

[2] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CZ-11519 Prague, Czech Republic

[3] Wenzhou Univ, Sch Mech & Elect Engn, Wenzhou 325035, Peoples R China

来源：

FUSION ENGINEERING AND DESIGN | 2020年 / 150卷

关键词：

ODS steel; Nuclear material; Femtosecond laser surface modification; Laser-induced damages/craters; 10(14) W/cm(2) laser intensity; STRUCTURAL-MATERIALS; ABLATION THRESHOLDS; FEMTOSECOND; METALS; ENERGY; PICOSECOND; ALUMINUM; TUNGSTEN; PHYSICS; PLASMA;

D O I：

10.1016/j.fusengdes.2019.111360

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The behavior of 16Cr3Al ODS steel (oxide dispersion strengthened steel), widely employed structural fusion material, under high-intensity laser radiation with intensity up to 10(14)W/cm(2) was investigated in air, helium and vacuum surrounding. Employed system was 65 fs laser at 804 nm, with applied pulse energy up to 5.25 mJ. Morphological effects were studied - cracking, crater parameters (depth, cross-section), LIPSS (laser-induced periodic surface structures) formation at the crater periphery, hydrodynamic effects, as well as chemical variations on the surface. Ablation thresholds were also determined for all three ambiences (for 100 applied pulses), and they were 0.30 J/cm(2), 0.23 J/cm(2) and 0.39 J/cm(2) in air, helium and vacuum, respectively. Plasma occurred in all experiments and it was most prominent in vacuum due to strongest laser-material coupling.

引用

页数：10

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