Comparison of microstructure and oxidation behavior of NiCoCrAlYSi laser cladding coating before and after high-current pulsed electron beam modification

2021 ◽  
pp. 160651
Author(s):  
Jie Cai ◽  
Yiming Yao ◽  
Chengzuan Gao ◽  
Peng Lyu ◽  
Xiankai Meng ◽  
...  
Keyword(s):  
Electron Beam ◽  
Laser Cladding ◽  
Oxidation Behavior ◽  
High Current ◽  
Pulsed Electron Beam ◽  
Before And After

Microstructural Modification of Brush-Plated Nanocrystalline Cr by High Current Pulsed Electron Beam Irradiation

2016 ◽  
Vol 41 ◽  
pp. 87-95 ◽  
Author(s):  
Jian Jun Hu ◽  
Lin Jiang Chai ◽  
Hong Bin Xu ◽  
Chao Ping Ma ◽  
Shu Bin Deng
Keyword(s):  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Thermal Stresses ◽  
Electron Beam Treatment ◽  
High Current ◽  
Beam Irradiation ◽  
Pulsed Electron Beam ◽  
Small Nodule ◽  
Before And After ◽  
Surface Microstructures

Cr layer was fabricated on 40Cr steel by electric brush plating process and then treated by high current pulsed electron beam irradiation technique. Surface microstructures of specimens before and after the irradiation were investigated. Results show that Cr surface is composed of uniformly distributed small nodule units which are composed of fine Cr particles smaller than 100nm. After high current pulsed electron beam treatment, many cracks are found on surface. The main reason is possibly due to the quasi-static thermal stresses accumulated along the surface of the specimens during the electron beam treatment. The surface grain grow from Cr particles because of heating by electron beam, and their size is less than 200nm.

Oxidation Behavior of Thermally Grown Oxide on Aluminized Coating Irradiated by High-Current Pulsed Electron Beam

2019 ◽  
Vol 8 (5) ◽  
pp. 726-734 ◽  
Author(s):  
Zhi-Yong Han ◽  
Wen-Xin Shi ◽  
Zhe Wang ◽  
Kun-Ying Ding ◽  
Tao-tao Cheng ◽  
...  
Keyword(s):  
Electron Beam ◽  
Oxidation Behavior ◽  
Thermally Grown Oxide ◽  
High Current ◽  
Pulsed Electron Beam ◽  
Thermally Grown

Transient oxidation behavior of MCrAlY coating irradiated by high-current pulsed electron beam

2018 ◽  
Vol 5 (12) ◽  
pp. 126515
Author(s):  
Jie Cai ◽  
Guojun Li ◽  
Chen Li ◽  
Conglin Zhang ◽  
Peng Lv ◽  
...  
Keyword(s):  
Electron Beam ◽  
Oxidation Behavior ◽  
High Current ◽  
Transient Oxidation ◽  
Pulsed Electron Beam ◽  
Mcraly Coating

scholarly journals Surface Alloys of 0.45 C Carbon Steel Produced by High Current Pulsed Electron Beam

2019 ◽  
Vol 38 (2019) ◽  
pp. 444-451 ◽  
Author(s):  
Lingyan Zhang ◽  
Yunxue Jin ◽  
Xitong Wang ◽  
Jie Cai ◽  
Qingfeng Guan
Keyword(s):  
Electron Microscopy ◽  
Corrosion Resistance ◽  
Electron Beam ◽  
Carbon Steel ◽  
Medium Carbon Steel ◽  
High Current ◽  
Medium Carbon ◽  
Pulsed Electron Beam ◽  
Transmission Electron ◽  
Before And After

AbstractThe chromium was deposited on the surface of 0.45 C medium carbon steel by high current pulsed electron beam (HCPEB) alloying treatment to obtain a high quality alloying layer. The microstructure of the alloying layer was studied by X-ray diffraction, optical microscopy, scanning electron microscopy (SEM), and transmission electron microscopy. The hardness of the surface was measured by Vickers durometer. The corrosion resistance of samples before and after HCPEB irradiation was also measured by an electrochemical workstation. The results showed that the alloying layer with a dept of about 4–9 μm on the surface was formed after HCPEB alloying treatment. TEM results revealed that the Cr element is dissolved on the surface and alloyed with C element in the substrate to form Cr23C6 enhanced particles. The microhardness and corrosion resistance of the medium carbon steel subjected to a HCPEB alloying processing were remarkably improved compared with the original one.

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.

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