Structural Aspects of Zr+ Ion-Beam Surface Modification and Mechanical Properties of 12CrMoV Steel

Surface modification is an effective way both to protect structural materials and to improve their mechanical properties. However under mechanical loading the distinction of elastic moduli of a modified surface layer and adjacent bulk material causes the stress concentrators to occur, whose relaxation may give rise to localized development of plastic deformation or fracture [1]. Under cyclic loading such distinction of the properties brings to multiple microcracking of strengthened surface layer, to act as structural micronotches [2, 3]. Therefore, optimized modes and parameters for surface layer modification are to be determined being a certain compromise between strength/ductility of the layer and its thickness etc.

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Zr+ Ion-Beam Surface Treatment of 30CrMnSiNi2 Steel for Improving its Fatigue Durability

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.872.219 ◽

2013 ◽

Vol 872 ◽

pp. 219-224 ◽

Cited By ~ 3

Author(s):

Ilya Vlasov ◽

Sergey V. Panin ◽

Viktor Sergeev ◽

Vasilii Naidfeld ◽

Mark Kalashnikov ◽

...

Keyword(s):

Surface Layer ◽

Ion Beam ◽

High Strength ◽

X Ray Diffraction ◽

Optical Scanning ◽

Cyclic Tension ◽

Transmission Electron ◽

Beam Surface ◽

Modified Surface ◽

Modified Surface Layer

The structure of modified surface layer the high-strength 30CrMnSiNi2 steel was investigated by optical, scanning electron and transmission electron microscopy as well as X-ray diffraction methods. The tests on static and cyclic tension were performed for 30CrMnSiNi2 steel specimens in as supplied state and after nanostructuring surface layer by Zr+ ion beam. Differences of the specimen deformation behavior and changes of their mechanical properties are analyzed. The reason for fatigue life increase of the samples after the treatment is discussed.

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Dislocation-related conductivity in Au(In)/Cd1–xZnxTe(x = 0, 0.1) Schottky contacts

The European Physical Journal Applied Physics ◽

10.1051/epjap/2021210167 ◽

2021 ◽

Vol 96 (2) ◽

pp. 20101

Author(s):

Andriy Tkachuk ◽

Volodymyr Tetyorkin ◽

Andriy Sukach

Keyword(s):

Surface Layer ◽

Surface Modification ◽

Ruby Laser ◽

Schottky Contacts ◽

Applied Bias ◽

Potential Barriers ◽

Conductivity Type ◽

Modified Surface ◽

Dc Current ◽

Modified Surface Layer

Dislocation-related conductivity is studied in Schottky contacts Au(In)/Cd1-xZnxTe (x = 0, 0.1) prepared on the surface of single crystals modified by multiple irradiation with a ruby laser and mechanical polishing. The contacts were examined by measuring the DC current as a function of the applied bias and temperature as well as the photoelectric response. It is shown that both methods of surface modification result in p-to-n conversion of the conductivity type of the surface layer. The charge transfer in contacts is explained by the formation of dislocation networks buried under the surface. A model of two potential barriers is proposed for the interpretation of the photovoltaic response in contacts. Their existence is associated with compressive strains in the modified surface layer caused by dislocations, which leads to an increase in the band gap and the formation of a heterostructure.

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Intergranular corrosion at a modified surface layer in a supermartensitic stainless steel for chemical injection mandrel

Engineering Failure Analysis ◽

10.1016/j.engfailanal.2021.105390 ◽

2021 ◽

pp. 105390

Author(s):

S.S.M. Tavares ◽

H.L.A. Keide ◽

P. S. P. Garcia ◽

J.A.C.Velasco ◽

J.M. Pardal ◽

...

Keyword(s):

Stainless Steel ◽

Surface Layer ◽

Intergranular Corrosion ◽

Supermartensitic Stainless Steel ◽

Modified Surface ◽

Modified Surface Layer

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Ga-ion beam surface modification of glass using a custom-built liquid metal ion beam

Journal of Applied Physics ◽

10.1063/5.0071815 ◽

2022 ◽

Vol 131 (1) ◽

pp. 014901

Author(s):

Byeong Jun Cha ◽

Woo Jun Byeon ◽

Chang Min Choi ◽

Boo Ki Min ◽

Jinwan Cho ◽

...

Keyword(s):

Surface Modification ◽

Liquid Metal ◽

Metal Ion ◽

Ion Beam ◽

Beam Surface

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Efficiency enhancement of Cu 2 ZnSn(S,Se) 4 solar cells by S-modified surface layer

Solar Energy Materials and Solar Cells ◽

10.1016/j.solmat.2016.12.033 ◽

2017 ◽

Vol 162 ◽

pp. 21-29 ◽

Cited By ~ 12

Author(s):

Chung-Hao Cai ◽

Shih-Yuan Wei ◽

Wei-Chih Huang ◽

Chia-Hao Hsu ◽

Wei-Hao Ho ◽

...

Keyword(s):

Surface Layer ◽

Solar Cells ◽

Efficiency Enhancement ◽

Modified Surface ◽

Modified Surface Layer

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Surface modification of die steels with B—Al-layers by thermal-chemical treatment

10.36652/1813-1336-2021-17-12-557-564 ◽

2021 ◽

pp. 557-564

Author(s):

N.S. Ulakhanov ◽

U.L. Mishigdorzhiyn ◽

A.G. Tikhonov ◽

A.I. Shustov ◽

A.S. Pyatykh

Keyword(s):

Mechanical Properties ◽

Wear Resistance ◽

Surface Layer ◽

Surface Modification ◽

High Temperature ◽

Chemical Treatment ◽

Quality Parameters ◽

Processing Temperature ◽

Die Steels ◽

Composite Layers

The effect of diffusion high-temperature boroaluminizing (HBA) on the mechanical properties and quality parameters of the surface layer of stamp steels 5KhNM and 3Kh2V8F is shown. An analysis of the microstructure and composition of diffusion composite layers obtained as a result of thermal-chemical treatment (TCT) is presented and the distribution of microhardness in these layers is studied depending on the formed borides and carbides. The influence of processing temperature modes of on the parameters of roughness was experimentally established and the wear resistance characteristics of the processed surfaces of the investigated materials were determined.

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Efficient hard X-ray source using femtosecond plasma at solid targets with a modified surface

Laser and Particle Beams ◽

10.1017/s026303460422314x ◽

2004 ◽

Vol 22 (3) ◽

pp. 301-306 ◽

Cited By ~ 17

Author(s):

S.A. GAVRILOV ◽

D.M. GOLISHNIKOV ◽

V.M. GORDIENKO ◽

A.B. SAVEL'EV ◽

R.V. VOLKOV

Keyword(s):

Experimental Data ◽

Surface Layer ◽

Laser Pulses ◽

Hot Electron ◽

High Contrast ◽

X Ray ◽

Corrugated Surface ◽

Fs Laser ◽

Modified Surface ◽

Modified Surface Layer

Recent results on constructing of an efficient hard X-ray source using solid targets irradiated by high-contrast 200-fs laser pulses with an intensity above 1016W/cm2are presented. We used different solid targets with a laser- and electrochemically modified surface layer: craters, pyramidal cavities, porous silicon, gratings. Experimental data obtained confirms that using solid targets with a corrugated surface one can achieve a prominent increase both in the efficiency of hard X-ray generation (in the quanta range 2–30 keV) and in the hot electron temperature of plasma.

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Surface Modification by Zr+ Ion Beam Irradiation of 12Cr1MoV and 30CrMnSiNi2 Steels for Improving Fatigue Durability

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1040.824 ◽

2014 ◽

Vol 1040 ◽

pp. 824-829 ◽

Cited By ~ 1

Author(s):

Ilya Vlasov ◽

Sergey Panin ◽

Viktor Sergeev ◽

Vasilii Naidfeld ◽

Pavlo Maruschak

Keyword(s):

Ion Beam ◽

Subsurface Layer ◽

Ion Beam Irradiation ◽

Bending Tests ◽

Cyclic Tension ◽

Fatigue Durability ◽

Modified Surface ◽

Cracking Pattern ◽

Alternating Bending ◽

Modified Surface Layer

Cyclic tension and alternating bending tests of 12Cr1MoV and 30CrMnSiNi2 steels specimens in as–supplied state and after surface irradiation by Zr+ ion beam have been carried out. Distinctions in formation of strain induced relief, as well as cracking pattern of modified surface layer are illustrated by methods of optical microscopy and interferential profilometry. Changes to occur in subsurface layer are characterized by means of nanoindentation and scanning electron microscopy of fracture surfaces. The description of differences of deformation behavior is carried out with use of the multiple cracking concepts.

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Optimization of laser-modified surface layer homogeneity

10.1117/12.287835 ◽

1997 ◽

Author(s):

Anna Bien

Keyword(s):

Surface Layer ◽

Modified Surface ◽

Modified Surface Layer

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Transient Electrochemical Measurements During Copper Chemical Mechanical Polishing

MRS Proceedings ◽

10.1557/proc-767-f2.9 ◽

2003 ◽

Vol 767 ◽

Cited By ~ 1

Author(s):

Seung-Mahn Lee ◽

Wonseop Choi ◽

Valentin Craciun ◽

Rajiv K. Singh

Keyword(s):

Surface Layer ◽

Reaction Kinetics ◽

Chemical Mechanical Polishing ◽

Copper Surface ◽

Mechanical Polishing ◽

Electrochemical Measurements ◽

Chemically Modified ◽

Modified Surface ◽

Selection Of ◽

Modified Surface Layer

AbstractChronoamperometry was used to investigate the reaction/passivation kinetics and thickness of the chemically modified surface layer on the copper during chemical mechanical polishing (CMP). The result showed that the reaction/passivation kinetics and the thickness of the chemically modified surface layer are strongly dependent on the chemistry of CMP slurry in the chemical aspect of CMP and play critical keys in the selection of the chemistry and its concentration. BTA and H2O2 enhanced the passivation kinetics, resulting in thinner layer on the copper surface. In addition, the reaction kinetics increased as pH decreased.

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