Iraqi Journal of Physics最新文献_第2页

Corrosion Protection Performance of PACC and PACC-Metal Oxides Nanocomposites Electropolymerized Coating of Low Carbon Steel PACC 和 PACC-金属氧化物纳米复合材料电聚合涂层对低碳钢的腐蚀防护性能

Iraqi Journal of Physics Pub Date : 2024-06-01 DOI: 10.30723/ijp.v22i2.1213

Zainab A. Hussain, K. Saleh

{"title":"Corrosion Protection Performance of PACC and PACC-Metal Oxides Nanocomposites Electropolymerized Coating of Low Carbon Steel","authors":"Zainab A. Hussain, K. Saleh","doi":"10.30723/ijp.v22i2.1213","DOIUrl":"https://doi.org/10.30723/ijp.v22i2.1213","url":null,"abstract":"In the current study, a novel conductive polymer poly 6-((4 acetylphenyl) carbamoyl) cyclohex-3-ene-1-carboxylic acid (PACC) was created by polymerized 6-((4 acetylphenyl) carbamoyl) cyclohex-3-ene-1-carboxylic acid (ACC) monomer using the electropolymerization process. The resulting polymer was characterized using Fourier Transform Infrared Spectroscopy (FTIR). The ability of this polymer to protect the alloy from corrosion was studied at temperatures ranging between 298 and 328 K. The ability of these coatings to stop corrosion on the surface was assessed by measuring the corrosion potential (Ecorr) and the corrosion current (icorr) using a potentiostat. Adding nanoscale metal oxides (zirconium dioxide (ZrO2) and magnesium oxides (MgO)) enhanced the efficiency of this polymeric coating. The protection efficiency of the polymer alone was 77.5%; this efficiency increased to 85.0% and 99.7% in the presence of nano ZrO2 and MgO, respectively. Kinetic and thermodynamic parameters (Ea, H, and S) were calculated for uncoated and coated LCS. An atomic force microscope (AFM) studied the coating surface morphology. Electrochemical impedance spectroscopy (EIS) was used to evaluate the coating resistance.","PeriodicalId":517619,"journal":{"name":"Iraqi Journal of Physics","volume":"4 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141276502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of A.C. Frequency on Hollow Magnetron Sputtering Discharge Parameters 交流电频率对中空磁控溅射放电参数的影响

Iraqi Journal of Physics Pub Date : 2024-03-01 DOI: 10.30723/ijp.v22i1.1191

Zahraa Mohammed Hasan, Q. A. Abbas

{"title":"Influence of A.C. Frequency on Hollow Magnetron Sputtering Discharge Parameters","authors":"Zahraa Mohammed Hasan, Q. A. Abbas","doi":"10.30723/ijp.v22i1.1191","DOIUrl":"https://doi.org/10.30723/ijp.v22i1.1191","url":null,"abstract":"In the present work, optical emission spectroscopy was used to diagnose the influence of A.C. power source frequency on the hollow magnetron sputtering discharge parameters (such as discharge emission, discharge current and voltage, glow discharge structure, temperature (Te) and electron number density (ne), Debye length (λD), and plasma parameter (ND) of constant pressure. The electron temperature and number density were determined using the Boltzmann plots and the Stark broadening methods, respectively. The results illustrate that the normal glow discharge structure is similar to the D.C. discharge mode. The magnetic field has no impact on the fundamental discharge parameter in both A.C. frequencies under study. On the other hand, the other discharge parameters (Te, ne, λD and ND) increase with increasing the magnetic field in both discharge frequencies. In addition, the increase in the frequency of the A.C. source current led to an increase in the discharge intensity emission and the other discharge parameters being studied. In this case, in frequency 7 kHz, Te surged from 0.685 eV to 0.839 eV, and ne experienced an increase from 3.088 x 1018 m-3 to 4.902 x 1018 m-3. At a frequency of 9 kHz, the electron temperature surged from 0.711eV to 0.911 eV. ne experienced an increase from 3.615 x 1018 m-3 to 6.749 x 1018 m-3.","PeriodicalId":517619,"journal":{"name":"Iraqi Journal of Physics","volume":"58 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140405960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and Characterization of Aluminum Oxide Nanoparticles Prepared by Two Different Cold Plasma Jet Methods 用两种不同的冷等离子喷射法制备氧化铝纳米粒子的合成与表征

Iraqi Journal of Physics Pub Date : 2024-03-01 DOI: 10.30723/ijp.v22i1.1174

Abdulrhman H. Shaker, K. Aadim

{"title":"Synthesis and Characterization of Aluminum Oxide Nanoparticles Prepared by Two Different Cold Plasma Jet Methods","authors":"Abdulrhman H. Shaker, K. Aadim","doi":"10.30723/ijp.v22i1.1174","DOIUrl":"https://doi.org/10.30723/ijp.v22i1.1174","url":null,"abstract":"In this paper, a cold plasma system utilizing a high voltage of 13.5 kV of alternative (AC) and direct current (DC) was used under atmospheric pressure with argon (Ar)-gas at a flow rate of 2.5 l/min and a flowing time of 4 min to synthesize aluminum oxide (AlO) nanoparticles (NP). From the results, when DC was used, it was found that the absorption spectrum starts at 303 nm and gradually falls to 870 nm. With AC, the absorption spectrum was at 330 nm and then began to fall to 902 nm. The energy gap when utilizing DC and AC was 3.49 and 3.44 eV respectively. The analysis of the X-ray diffraction (XRD) patterns showed the structure of the NPs was amorphous, matching the pattern 42-1746. At DC, the average size of NPs formed, as deduced from the XRD pattern, was 29.56 nm, and it was very close to what appeared in the field emission scanning electron microscopy (FESEM) images, in which the apparent NP size ranged between 20 and 50 nm. The XRD test gave an average NP size of 38.21 nm in AC, while the FESEM images showed a size range of 20 - 60 nm. At dc, the AlO NPs were aggregated and interconnected, and each set was connected to another set, as shown in the FESEM images. At AC, the shape of the synthesized AlO NPs was quasi-spherical, with slightly elongated particles connected.","PeriodicalId":517619,"journal":{"name":"Iraqi Journal of Physics","volume":"11 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140404077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spectral Analysis of Al Arc Discharge Plasma Generated in ZnO/DDDW Colloid ZnO/DDDW 胶体中产生的铝弧放电等离子体的光谱分析

Iraqi Journal of Physics Pub Date : 2024-03-01 DOI: 10.30723/ijp.v22i1.1194

Mena L. Badran, S. J. Kadhem

{"title":"Spectral Analysis of Al Arc Discharge Plasma Generated in ZnO/DDDW Colloid","authors":"Mena L. Badran, S. J. Kadhem","doi":"10.30723/ijp.v22i1.1194","DOIUrl":"https://doi.org/10.30723/ijp.v22i1.1194","url":null,"abstract":"This study aims to investigate the aluminum (Al) arc plasma parameters generated through the explosive strip technique. The research involves the measurement of key plasma characteristics such as plasma frequency (fp), Debye length, and Debye number. The electron temperature (Te) and electron density (ne) of the plasma were calculated utilizing the Boltzmann plot and Stark expansion method. Analysis of the optical emission spectrum revealed distinctive peaks corresponding to oxygen, Al, and zinc oxide (ZnO) within the plasma. The outcomes of the study demonstrated a noteworthy correlation between the applied current and the electron temperature and density. Specifically, as the current increases, both electron temperature and density increase. The electron temperature of the Al plasma increased from the range of 0.852 eV to 0.92404 eV, accompanied by a corresponding elevation in electron density from 13.1× 1017 cm-3 to 15.2× 1017 cm-3. Furthermore, the detonation of the Al strip within a ZnO suspension led to even more pronounced changes. In this case, the electron temperature surged from 0.92885 eV to 1.1012 eV, and the electron density experienced an increase from 37.7 × 1017 cm-3 to 44.7 × 1017 cm-3.","PeriodicalId":517619,"journal":{"name":"Iraqi Journal of Physics","volume":"43 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140398383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Simulation of Neural Network Based on Adaptive Optics for Correcting Phase Distortion in Astronomical Observations 基于自适应光学的神经网络在天文观测中校正相位失真的数值模拟

Iraqi Journal of Physics Pub Date : 2024-03-01 DOI: 10.30723/ijp.v22i1.1203

Raaid Nawfee Hassan

{"title":"Numerical Simulation of Neural Network Based on Adaptive Optics for Correcting Phase Distortion in Astronomical Observations","authors":"Raaid Nawfee Hassan","doi":"10.30723/ijp.v22i1.1203","DOIUrl":"https://doi.org/10.30723/ijp.v22i1.1203","url":null,"abstract":"Adaptive optics revolutionizes telescopic resolution but faces cost, complexity, and calibration hurdles. Neural network adaptive optics (NNAO) offers promise by using neural networks to tailor corrections to telescopes and atmospheric conditions, by passing calibration and sensors. This MATLAB-based study examines NNAO's impact on astronomical image quality, revealing it as a cost-efficient solution that enhances adaptive optics in astronomy. The numerical simulation results were encouraging, with a compensation rate exceeding 50% due to favorable monitoring conditions. The results indicate that the dominant factor affecting image quality is the variance of wavefront aberrations. The Strehl ratio (SR) decreases from an average of 0.548 for a variance of 0.2 to 0.020 for a variance of 0.6, while the mean squared error (MSE) increases from an average of 0.613 to 5.414. However, the effect on peak signal-to-noise ratio (PSNR) is inconclusive. Furthermore, it was found that increasing the number of neurons and training ratio does not significantly impact the results obtained, but it noticeably affects the computational time required.","PeriodicalId":517619,"journal":{"name":"Iraqi Journal of Physics","volume":"42 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140286646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical Investigation of Reduced Graphene Oxide / Titanium Dioxide Nanocomposite Thin Films Synthesized by Hydrothermal Method 水热法合成的还原氧化石墨烯/二氧化钛纳米复合薄膜的光学研究

Iraqi Journal of Physics Pub Date : 2024-03-01 DOI: 10.30723/ijp.v22i1.1197

Linda I. Mohi, A. F. Abdulameer

引用次数: 0

Influence of Incorporating MWCNTs on Some Physical Characteristics of Blend Nanocomposites 掺入 MWCNT 对混合纳米复合材料某些物理特性的影响

Iraqi Journal of Physics Pub Date : 2024-03-01 DOI: 10.30723/ijp.v22i1.1208

Lubna Abdul-Aziz Jassim, M. Jawad

引用次数: 0

Structural and Morphological Characterization of MEH-PPV/Ag Composite MEH-PPV/Ag 复合材料的结构和形态特征

Iraqi Journal of Physics Pub Date : 2024-03-01 DOI: 10.30723/ijp.v22i1.1131

Suha Ahmad Jawad, Mustafa Mohammed Ali Hussein

{"title":"Structural and Morphological Characterization of MEH-PPV/Ag Composite","authors":"Suha Ahmad Jawad, Mustafa Mohammed Ali Hussein","doi":"10.30723/ijp.v22i1.1131","DOIUrl":"https://doi.org/10.30723/ijp.v22i1.1131","url":null,"abstract":"In this study, spin coating was used to prepare thin films of poly (2-methoxy-5-(2-ethylhexyloxy)-1, 4-phenylene vinylene) and silver (MEH-PPV/Ag) in this study. The physical characteristics of MEH-PPV/Ag thin films with various weight ratios (0.01, 0.02, 0.03, and 0.04%) were investigated by Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), X-ray diffraction analysis (XRD), and thermal testing. FTIR analysis showed that there were occurrences of the polymer's predicted chemical bonds. AFM tests show that when different amounts of silver are added to a polymer matrix, the film's surface roughness (root mean square) goes up from an average of 83.51 to 511.3 nm. FE-SEM analysis showed that a pure sample of the polymer formed evenly. However, when different amounts of Ag were added, clear balls or circles formed, showing the energy of mixing between the MEH-PPV and Ag. As silver addition transformed the polymer from amorphous to polycrystalline, XRD analysis revealed both phases. In tests comparing pure MEH-PPV to MEH-PPV/Ag, the polymer containing silver showed higher thermal conductivity.","PeriodicalId":517619,"journal":{"name":"Iraqi Journal of Physics","volume":"253 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140286462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water Treatment Performance of PAN/HPMC/Gr Nano Composites PAN/HPMC/Gr 纳米复合材料的水处理性能

Iraqi Journal of Physics Pub Date : 2024-03-01 DOI: 10.30723/ijp.v22i1.1175

Masar A. Akaood, Iftikhar M. Ali, Basma I. Waisi

{"title":"Water Treatment Performance of PAN/HPMC/Gr Nano Composites","authors":"Masar A. Akaood, Iftikhar M. Ali, Basma I. Waisi","doi":"10.30723/ijp.v22i1.1175","DOIUrl":"https://doi.org/10.30723/ijp.v22i1.1175","url":null,"abstract":"This study investigates polyacrylonitrile:hydroxypropyl methylcellulose )PAN:HPMC( and PAN:HPMC: graphene (Gr) composite nanofibers prepared using the electrospinning technique. Electrospinning is a simple and versatile technique that relies on the electrostatic repulsion between surface charges to continuously draw nanofibers from a viscoelastic fluid. Membrane technology is vital in removing contaminants due to its easy handling and high efficiency. The results demonstrated that the Gr was successfully incorporated into the PAN:HPMC nanofiber membranes, as confirmed by scanning electron microscopy, Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) measurements. The Gr content has a significant impact on the diameter, porosity, and pore size. The PAN:HPMC:0.02Gr electrospun nanofiber membranes achieved excellent oil rejection (72.47%) and good permeability flux (750 LMH); this might be a result of how well the functional groups of the equally distributed Gr within the PAN:HPMC nanofibers interacted with oil. It was noticed that oil rejection dropped a lot as the Gr content went up. This is likely because the pores got wider and some of the Gr stacked or agglomerated across the nanofibers. ","PeriodicalId":517619,"journal":{"name":"Iraqi Journal of Physics","volume":"43 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140403521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and Study the Properties of PVDF/PEO/WO2 Hybrid Nanocomposite Thin Films Prepared by a Spin Coating Method 旋转涂布法制备 PVDF/PEO/WO2 混合纳米复合薄膜及其性能研究

Iraqi Journal of Physics Pub Date : 2024-03-01 DOI: 10.30723/ijp.v22i1.1212

Aseel N. Bardan, Lamia K. Abbas

{"title":"Preparation and Study the Properties of PVDF/PEO/WO2 Hybrid Nanocomposite Thin Films Prepared by a Spin Coating Method","authors":"Aseel N. Bardan, Lamia K. Abbas","doi":"10.30723/ijp.v22i1.1212","DOIUrl":"https://doi.org/10.30723/ijp.v22i1.1212","url":null,"abstract":"In this work, using the spin coating method to create polyvinylidene fluoride (PVDF)/polyethylene oxide (PEO) thin films, the effects of nano-tungsten oxide (WO2) doping were investigated. The novelty of this research lies in its investigation of varying weight concentrations of WO2 nanoparticles (NPs) within the composite films. Comprehensive characterization techniques were employed, including structural analysis via X-ray diffraction (XRD), which revealed a clear and prominent peak in the XRD of the PVDF/PEO films, and the films' polycrystalline nature with tetragonal structures. The grain size was noted to increase with higher WO2 NPs doping. Field emission scanning electron microscopy (FE-SEM) showed hexagonal-like α-phase PVDF crystals and uniform distribution of WO2 NPs. Furthermore, Fourier-transform infrared spectroscopy (FTIR) confirmed the characteristics of PVDF/PEO and identified specific doping compounds, confirming successful incorporation. The optical transmittance spectra unveiled the films' optical band gap energy, optical transition types, and absorption characteristics, where novelty emerged as the band gap energy significantly increased from 3.0 eV to 3.64 eV with an increased WO2 NPs weight doping percentage, signifying profound electronic structure modifications and potential applications in optoelectronics and sensors.","PeriodicalId":517619,"journal":{"name":"Iraqi Journal of Physics","volume":"121 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140407015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0