The effect of high-current pulsed electron beam modification on the surface wetting property of polyamide 6

AbstractThis study demonstrates that different modification pulse voltages affect the wetting property of the surface of polyamide 6 (PA6) with a certain regularity. Broadly, the hydrophilic property of PA6’s surface increases with increasing pulsed voltage. Based on scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analysis, this paper discusses the mechanism by which high current pulsed electron beam (HCPEB) etching modification influences the surface wettability of PA6. Within a certain range below 28 kV, this effect is caused by an increase of in surface roughness due to HCPEB bombardment of the surface. Within a certain range above 28 kV, HCPEB changes the surface morphology, resulting in changes to the wetting property. Furthermore, by using various pulsed voltages to modify the PA6 surface, this study investigated the ability of the Wenzel model to explain changes in the water contact angle and wetting property of PA6’s surface.

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Deposition of Cobalt Doped Zinc Oxide Thin Film Nano-Composites Via Pulsed Electron Beam Ablation

MRS Advances ◽

10.1557/adv.2016.44 ◽

2016 ◽

Vol 1 (6) ◽

pp. 433-439 ◽

Cited By ~ 6

Author(s):

Asghar Ali ◽

Patrick Morrow ◽

Redhouane Henda ◽

Ragnar Fagerberg

Keyword(s):

Zinc Oxide ◽

Electron Beam ◽

Binding Energy ◽

Photoelectron Spectroscopy ◽

Xrd Analysis ◽

Sem Analysis ◽

Oxide Thin Film ◽

X Ray ◽

Pulsed Electron Beam ◽

Deposited Films

AbstractThis study reports on the preparation of cobalt doped zinc oxide (Co:ZnO) films via pulsed electron beam ablation (PEBA) from a single target containing 20 w% Co on sapphire (0001) and silicon (100) substrates. The films have been deposited at various temperatures (350оC, 400оC, 450оC) and pulse frequencies (2 Hz, 4 Hz), under a background argon (Ar) pressure of about 3 mtorr, and an accelerating voltage of 14 kV. The surface morphology has been examined by atomic force microscopy (AFM) and scanning electron microscopy (SEM). According to SEM analysis, the films consist of nano-globules whose size is in the range of 80-178 nm. Energy dispersive x-ray spectroscopy (EDX) reveals that deposition is congruent and the prepared films contain ∼20±5 w% cobalt. It has been found that the nano-globules in the deposited films are cobalt-rich zones containing ∼70 w% Co. From x-ray photoelectron spectroscopy (XPS) analysis, Co 2p3/2 peaks indicate that the deposited films contain CoO (binding energy = 780.5 eV) as well as metallic Co (binding energy = 778.1-778.5 eV). X-ray diffraction (XRD) analysis supports the presence of metallic Co hcp phase (2ϴ = 44.47° and 47.43°) in the films.

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Influence of Electron Beam Pulsed Times on the Properties of 40Cr

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.154-155.1170 ◽

2010 ◽

Vol 154-155 ◽

pp. 1170-1177

Author(s):

Yuan Fang Chen ◽

Xiao Dong Peng ◽

Jian Jun Hu ◽

Hong Bin Xu ◽

Chan Hao

Keyword(s):

Surface Roughness ◽

Wear Resistance ◽

Corrosion Resistance ◽

Electron Beam ◽

High Current ◽

Wear Properties ◽

X Ray ◽

Pulsed Electron Beam ◽

Surface Microstructures ◽

40Cr Steel

Surface modification of 40Cr steel by high current pulsed electron beam has been investigated . The pulsed times of HCPEB was changed from 1 to 25 to prepare different specimens. Surface microstructures and section microstructures after HCPEB irradiation were detected by using metallurgical microscope, SEM and X-ray diffractometer. It is shown that crater defects were found on the surface after the irradiation of HCPEB and the density of craters will decrease with increasing pulses times. When treated by 27Kev accelerating voltage, with increasing pulse times, the particles located in surface layer were obviously refined .The surface roughness, hardness, wear properties and corrosion resistance were analyzed after irradiation of HCPEB. The wear resistance and corrosion resistance were obviously enhanced after 10 pulses treatment.

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Surface Modification of Polycarbonateurethane by Grafting Phosphorylcholine Glyceraldehydes for Improving Hemocompatibility

MRS Proceedings ◽

10.1557/opl.2012.332 ◽

2012 ◽

Vol 1403 ◽

Cited By ~ 1

Author(s):

Wei Gao ◽

Yakai Feng ◽

Jian Lu ◽

Jintang Guo

Keyword(s):

Contact Angle ◽

Photoelectron Spectroscopy ◽

Polymer Surface ◽

Xps Analysis ◽

Poly Ethylene Glycol ◽

Water Contact ◽

X Ray ◽

Poly Ethylene ◽

Covalently Linked ◽

Scanning Electron

ABSTRACTPhosphorylcholine glyceraldehyde (PCGA) was used as a phosphorylcholine (PC) group containing compound to graft onto the surface of polycarbonateurethane (PCU) film using 1,6-hexanediamine (HDA) or α,ω-diamino-poly(ethylene glycol) (APEG, Mn = 200) as a spacer, in order to introduce biomimetic structure onto the polymer surface. X-ray photoelectron spectroscopy (XPS) analysis shows that PCGA has been covalently linked to the PCU surface. Water contact angle test suggests that the surface hydrophilicity has been improved after PCGA is grafted onto the surface of PCU film. Scanning electron microscope (SEM) observation of the modified PCU films after contacting with plasma-rich plasma demonstrates that platelets rarely adhere but a large number of platelets adhere to the original PCU surface. The hemocompatibility of the PC modified PCU film has been improved obviously after grafting with PCGA with PEG spacer.

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Microstructure Modifications and Associated Corrosion Improvements in GH4169 Superalloy Treated by High Current Pulsed Electron Beam

Journal of Nanomaterials ◽

10.1155/2015/876539 ◽

2015 ◽

Vol 2015 ◽

pp. 1-5

Author(s):

Yichang Su ◽

Guangyu Li ◽

Liyuan Niu ◽

Shengzhi Yang ◽

Jie Cai ◽

...

Keyword(s):

Electron Beam ◽

Electron Microscope ◽

Optical Microscope ◽

High Current ◽

Pulsed Electron Beam ◽

Density Of Dislocations ◽

Nickel Based Superalloy ◽

Transmission Electron ◽

Gh4169 Superalloy ◽

Scanning Electron

The surface of the nickel-based superalloy GH4169 was subjected to high-current pulsed electron beam (HCPEB) treatment. The microstructural morphologies of the material were analysed by means of optical microscope (OP), scanning electron microscope (SEM), and transmission electron microscope (TEM). The results reveal that the irradiated surface was remelted and many craters were formed. The density of craters decreased with the increment of HCPEB pulses. After 20-pulsed HCPEB irradiation, nanostructures were formed in the melted region of the surface. Furthermore, slipping bands and high density of dislocations were also formed due to the severe plastic deformation. The selective purification effect, homogenized composition, nanostructures, and dislocation slips introduced by HCPEB irradiation bring a significant improvement of corrosion resistance of GH4169 superalloy.

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STUDY ON THE INFLUENCE OF ELECTRON BEAM ON THE PHYSICOCHEMICAL PROPERTIES OF POLYAMIDE 6

Eurasian Physical Technical Journal ◽

10.31489/2021no2/35-39 ◽

2021 ◽

Vol 18 (2) ◽

pp. 35-39

Author(s):

B.K. Rakhadilov ◽

Keyword(s):

Crystal Structure ◽

Electron Beam ◽

Irradiation Dose ◽

Research Work ◽

Polyamide 6 ◽

Electron Beam Treatment ◽

Scanning Calorimetry ◽

X Ray ◽

Pulse Accelerator ◽

Scanning Electron

In this research work has been studied the effect of electron irradiation on the properties and structure of PA6 polyamide. The treatment was carried out with an industrial pulse accelerator in air with an irradiation dose in the range of 100-400 kGy. The processed polymer was also studied by Fourier-transform infrared spectroscopy, scanning electron microscopy, X-ray phase analysis and differential scanning calorimetry. According to the results of the study was known that electron beam treatment affects the crystal structure of polyamide-PA6, reducing its size. Also, it was found that the radiation dose of 200 kGy is optimal for preserving the crystal structure in comparison with 100, 300 and 400 kGy.

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Microstructure and Mechanical Properties of 40CrNiMo7 Steel after High Current Pulsed Electron Beam Treatment

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.423-426.276 ◽

2013 ◽

Vol 423-426 ◽

pp. 276-280

Author(s):

Hui Hui Wang ◽

Sheng Zhi Hao

Keyword(s):

Wear Resistance ◽

Electron Beam ◽

High Current ◽

X Ray Diffraction ◽

Surface Microhardness ◽

Initial State ◽

X Ray ◽

Pulsed Electron Beam ◽

Modified Surface ◽

Modified Layer

High current pulsed electron beam (HCPEB) treatment was conducted on 40CrNiMo7 steel. The surface microstructure was characterized by metalloscopy and X-ray diffraction methods. The microhardness and wear resistance of modified surface were measured. After the HCPEB treatment, the surface crater structure was observed due to the inhomogeneity of initial material. A modified layer of depth ~ 7 μm was formed with a hybrid microstructure composed mainly of martensite and a small quantity of austenite. The surface microhardness of HCPEB modified sample was increased drastically to more than 1000 HK. The wear resistance increased by about 36% as compared to the initial state.

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Etching of polycrystalline diamond films by electron beam assisted plasma

Journal of Materials Research ◽

10.1557/jmr.1996.0348 ◽

1996 ◽

Vol 11 (11) ◽

pp. 2744-2748 ◽

Cited By ~ 6

Author(s):

Koji Kobashi ◽

Shigeaki Miyauchi ◽

Koichi Miyata ◽

Kozo Nishimura ◽

Jorge J. Rocca

Keyword(s):

Electron Beam ◽

Photoelectron Spectroscopy ◽

Diamond Films ◽

Film Surface ◽

Polycrystalline Diamond ◽

Etch Pits ◽

X Ray ◽

Direct Current Plasma ◽

Polycrystalline Diamond Film ◽

Scanning Electron

Polycrystalline diamond films were processed in a direct current plasma produced by a self-focused electron beam using combinations of H2, O2, and He as the processing gas. The film surfaces were observed by scanning electron microscopy, and characterized by x-ray photoelectron spectroscopy. It was found that for the case in which O2 was included in the processing gas, a high density of etch pits appeared on (100) faces of diamond grains, and oxygen was either physisorbed or chemisorbed at the film surface. It was demonstrated that the etching apparatus used was capable of forming at least a 5-μm wide pattern of polycrystalline diamond film.

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EXAFS, X-ray diffraction and Raman studies of (Pb1−xLax)(Zr0.65Ti0.35)O3 ( and 0.09) ceramics irradiated by high-current pulsed electron beam

Journal of Physics and Chemistry of Solids ◽

10.1016/j.jpcs.2006.05.034 ◽

2006 ◽

Vol 67 (9-10) ◽

pp. 2007-2012 ◽

Cited By ~ 12

Author(s):

V.V. Efimov ◽

E.A. Efimova ◽

K. Iakoubovskii ◽

S. Khasanov ◽

D.I. Kochubey ◽

...

Keyword(s):

Electron Beam ◽

High Current ◽

X Ray Diffraction ◽

X Ray ◽

Pulsed Electron Beam

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X-ray micro tomography in the scanning electron microscope

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100107678 ◽

1978 ◽

Vol 36 (1) ◽

pp. 106-107 ◽

Cited By ~ 1

Author(s):

W. Brünger

Keyword(s):

Electron Beam ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Target Surface ◽

The Body ◽

X Rays ◽

Cross Sectional ◽

X Ray ◽

Micro Tomography ◽

Scanning Electron

Reconstructive tomography is a new technique in diagnostic radiology for imaging cross-sectional planes of the human body /1/. A collimated beam of X-rays is scanned through a thin slice of the body and the transmitted intensity is recorded by a detector giving a linear shadow graph or projection (see fig. 1). Many of these projections at different angles are used to reconstruct the body-layer, usually with the aid of a computer. The picture element size of present tomographic scanners is approximately 1.1 mm2.Micro tomography can be realized using the very fine X-ray source generated by the focused electron beam of a scanning electron microscope (see fig. 2). The translation of the X-ray source is done by a line scan of the electron beam on a polished target surface /2/. Projections at different angles are produced by rotating the object.During the registration of a single scan the electron beam is deflected in one direction only, while both deflections are operating in the display tube.

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