Ion sputtering rate of nanostructured FCC, BCC and HCP metals processed by severe plastic deformation

Open School-Conference of NIS Countries Ultrafine Grained and Nanostructured Materials

Khisamov, Kh R.^1 ; Nazarov, K.S.^1 ; Sergeev, S.N.^1 ; Shayakhmetov, R.U.^1 ; Baimova, J.A.^1,2 ; Yumaguzin, Y.M.^1,2 ; Mulyukov, R.R.^1,2

Institute for Metals Superplasticity Problems, Russian Academy of Sciences, 39 Stepan Khalturin St., Ufa

450001, Russia^1

Bashkir State University, 32 Zaki Validi St., Ufa

450074, Russia^2

关键词: Comparative measurements;    Glow discharge current;    High pressure torsions;    Ion sputtering rate;    Nano-structured;    Nano-structuring;    Severe plastic deformations;    Sputtering rate;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/447/1/012001/pdf
DOI  :  10.1088/1757-899X/447/1/012001

来源: IOP

【 摘 要 】

The effect of nanostructuring on the ion sputtering rate of metals and the glow discharge current is studied. Nanostructured samples were processed by severe plastic deformation using high pressure torsion. For comparative measurements, coarse-grained samples were obtained by annealing of nanostructured samples. The sputtering rates of nanostructured and coarse-grained nickel, iron and zirconium were measured after ion sputtering in glow gas-discharge. It has been found that nanostructuring of metals leads to an increase in the ion sputtering rate and the glow discharge current. Possible causes of changes in the ion sputtering rate due to nanostructuring are analyzed.