scholarly journals Mechanism of surface nanocrystallization in pure nickel induced by high-current pulsed electron beam

2009 ◽  
Vol 58 (10) ◽  
pp. 7300
Author(s):  
Cheng Du-Qing ◽  
Guan Qing-Feng ◽  
Zhu Jian ◽  
Qiu Dong-Hua ◽  
Cheng Xiu-Wei ◽  
...  
Keyword(s):  
Electron Beam ◽  
Pure Nickel ◽  
High Current ◽  
Pulsed Electron Beam ◽  
Surface Nanocrystallization

Surface Nanocrystallization of Nickel Produced by High-Current Pulsed Electron Beam Irradiation

2012 ◽  
Vol 560-561 ◽  
pp. 709-713
Author(s):  
Zhi Yong Han ◽  
Hui Zou ◽  
Zhi Ping Wang ◽  
Jin Tong Guan ◽  
Qing Feng Guan
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Pure Nickel ◽  
Coarse Grained ◽  
High Current ◽  
Beam Irradiation ◽  
Dominant Mechanism ◽  
Pulsed Electron Beam ◽  
Surface Nanocrystallization ◽  
Melting Surface

The nanocrystalline surface was obtained on bulk pure nickel by using high-current pulsed electron beam (HCPEB) technique. The temperature field induced by HCPEB was numerically simulated. The structures of the nanocrystallized surface were characterized by scanning electron beam (SEM), which showed that after HCPEB irradiation, the initial coarse-grained structure on the surface was refined into fine grains with sizes of about 70nm. It was revealed that melting surface caused by HCPEB irradiation and subsequently rapid cooling was the dominant mechanism of the surface nanocrystallization of bulk nickel. The HCPEB technique provides a new method for rapid fabricating surface-nanocrystallized materials.

Microstructures of pure nickel induced by high-current pulsed electron beam irradiation

2016 ◽  
Vol 52 (5) ◽  
pp. 869-875 ◽  
Author(s):  
Conglin Zhang ◽  
Yuanwang Zhang ◽  
Nana Tian ◽  
Shi Chen ◽  
Zhen Qian ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Pure Nickel ◽  
High Current ◽  
Beam Irradiation ◽  
Pulsed Electron Beam

The structure and properties of boron carbide ceramics modified by high-current pulsed electron-beam

2016 ◽  
Author(s):  
Yuri Ivanov ◽  
Oleg Tolkachev ◽  
Maria Petyukevich ◽  
Anton Teresov ◽  
Olga Ivanova ◽  
...  
Keyword(s):  
Electron Beam ◽  
Boron Carbide ◽  
Structure And Properties ◽  
High Current ◽  
Pulsed Electron Beam ◽  
Carbide Ceramics

scholarly journals Preparation and Electron-Beam Surface Modification of Novel TiNi Material for Medical Applications

2021 ◽  
Vol 11 (10) ◽  
pp. 4372
Author(s):  
Sergey G. Anikeev ◽  
Anastasiia V. Shabalina ◽  
Sergei A. Kulinich ◽  
Nadezhda V. Artyukhova ◽  
Daria R. Korsakova ◽  
...  
Keyword(s):  
Electron Beam ◽  
Material Surface ◽  
High Current ◽  
New Materials ◽  
New Approach ◽  
Pulsed Electron Beam ◽  
Beam Surface ◽  
Compositional Changes ◽  
Unmodified Sample ◽  
Mcf 7

A new approach to fabricate TiNi surfaces combining the advantages of both monolithic and porous materials for implants is used in this work. New materials were obtained by depositing a porous TiNi powder onto monolithic TiNi plates followed by sintering at 1200 °C. Then, further modification of the material surface with a high-current-pulsed electron beam (HCPEB) was carried out. Three materials obtained (one after sintering and two after subsequent beam treatment by 30 pulses with different pulse energy) were studied by XRD, SEM, EDX, surface profilometry, and by means of electrochemical measurements, including OCP and EIS. Structural and compositional changes caused by HCPEB treatment were investigated. Surface properties of the samples during their storage in saline for 10 days were studied and a model experiment with cell growth (MCF-7) was carried out for the unmodified sample with an electron beam to detect cell appearance on different surface locations.

Crater Eruption Induced by High Current Pulsed Electron Beam (HCPEB) Treatment

2010 ◽  
Vol 654-656 ◽  
pp. 1700-1703 ◽  
Author(s):  
Thierry Grosdidier ◽  
Xiang Dong Zhang ◽  
Jiang Wu ◽  
Nathalie Allain-Bonasso ◽  
Ke Min Zhang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Electron Beam ◽  
Surface Properties ◽  
Nucleation And Growth ◽  
Corrosion And Wear ◽  
Crater Formation ◽  
High Current ◽  
Negative Effects ◽  
Pulsed Electron Beam ◽  
Potential Formation

High current pulsed electron beam (HCPEB) is a fairly new technique for improving surface properties such as corrosion and wear resistances. One of the negative effects induced by HCPEB is the potential formation of craters on the surface of the HCPEB treated materials. These changes can impair the corrosion-resistance by promoting pitting. The mechanisms of nucleation and growth are detailed and the effect of the number of pulses on crater formation is discussed.

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