Pub Date : 2023-07-01DOI: 10.21608/ajnsa.2023.183687.1704
A. El-Taher, H. Abd Elmoniem, Sara M. Mosaad
Dendritic microstructures are a common issue in casting applications, leading to subpar mechanical properties. A new and innovative approach for combating this problem is through the application of mechanical stirring using an RMF. The solidification microstructures, mechanical and elastic characteristics of Sn-0.7wt%Cu-xCo (where x = 0.05 and 0.5) alloys were analyzed with and without the application of an RMF. The results revealed that, in the absence of an RMF, both solder alloys displayed extensive and undesirable columnar formations of the dendritic β-Sn phase. However, the application of an RMF led to a significant modification of the solidification microstructure, transforming the dendritic β-Sn phase from columnar to equiaxed, resulting in fragmentation of the dendrites. As well, the average size of (Cu,Co) 6 Sn 5 IMCs was reduced, resulting in successful suppression of the growth rate of IMCs with the use of RMF. Tensile testing showed that the Sn-0.7wt%Cu-0.05Co alloy with RMF exhibited the highest strength across a range of temperatures and strain rates. Additionally, the ultimate tensile strength, yield strength, yield modulus, and elongation percentage of the Sn-Cu-0.05Co alloy with RMF were approximately 29.2%, 31.8%, 29.2% and 7.1% at 25°C higher compared to that of the RMF-free Sn-Cu-0.05Co alloy. By evaluating the Poisson's ratio, Young's modulus, shear modulus, and bulk modulus, it was determined with a high level of confidence that the application of RMF during solidification made the Sn-7Cu-0.5Co alloy more ductile, while the Sn-7Cu-0.05Co alloy demonstrated increased strength compared to their counterparts without RMF.
树枝状微观结构是铸造应用中常见的问题，导致机械性能较差。解决这一问题的一种新的创新方法是使用RMF应用机械搅拌。分析了在使用和不使用RMF的情况下Sn-0.7wt%Cu-xCo（其中x=0.05和0.5）合金的凝固微观结构、机械和弹性特性。结果表明，在没有RMF的情况下，两种焊料合金都显示出树枝状β-Sn相的广泛且不希望的柱状形成。然而，RMF的应用导致凝固微观结构的显著改变，将树枝状β-Sn相从柱状转变为等轴状，导致树枝状组织碎裂。此外，（Cu，Co）6 Sn 5 IMCs的平均尺寸减小，导致使用RMF成功地抑制了IMCs的生长速率。拉伸试验表明，具有RMF的Sn-0.7wt%Cu-0.05Co合金在一系列温度和应变速率下表现出最高的强度。此外，与不含RMF的Sn-Cu-0.05Co合金相比，在25°C下，含RMF Sn-Cu-0.05 Co合金的极限抗拉强度、屈服强度、屈服模量和伸长率分别高出约29.2%、31.8%、29.2%和7.1%。通过评估泊松比、杨氏模量、剪切模量和体积模量，可以很有把握地确定，在凝固过程中应用RMF使Sn-7Cu-0.5Co合金更具韧性，而Sn-7Cu-0.05Co合金与没有RMF的合金相比表现出更高的强度。
{"title":"Influence of Rotating Magnetic Field (RMF) on Dendrite Growth, Mechanical and Elastic Properties of Sn-Cu-Co Lead-Free Solder Alloy","authors":"A. El-Taher, H. Abd Elmoniem, Sara M. Mosaad","doi":"10.21608/ajnsa.2023.183687.1704","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.183687.1704","url":null,"abstract":"Dendritic microstructures are a common issue in casting applications, leading to subpar mechanical properties. A new and innovative approach for combating this problem is through the application of mechanical stirring using an RMF. The solidification microstructures, mechanical and elastic characteristics of Sn-0.7wt%Cu-xCo (where x = 0.05 and 0.5) alloys were analyzed with and without the application of an RMF. The results revealed that, in the absence of an RMF, both solder alloys displayed extensive and undesirable columnar formations of the dendritic β-Sn phase. However, the application of an RMF led to a significant modification of the solidification microstructure, transforming the dendritic β-Sn phase from columnar to equiaxed, resulting in fragmentation of the dendrites. As well, the average size of (Cu,Co) 6 Sn 5 IMCs was reduced, resulting in successful suppression of the growth rate of IMCs with the use of RMF. Tensile testing showed that the Sn-0.7wt%Cu-0.05Co alloy with RMF exhibited the highest strength across a range of temperatures and strain rates. Additionally, the ultimate tensile strength, yield strength, yield modulus, and elongation percentage of the Sn-Cu-0.05Co alloy with RMF were approximately 29.2%, 31.8%, 29.2% and 7.1% at 25°C higher compared to that of the RMF-free Sn-Cu-0.05Co alloy. By evaluating the Poisson's ratio, Young's modulus, shear modulus, and bulk modulus, it was determined with a high level of confidence that the application of RMF during solidification made the Sn-7Cu-0.5Co alloy more ductile, while the Sn-7Cu-0.05Co alloy demonstrated increased strength compared to their counterparts without RMF.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48784008","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}
Pub Date : 2023-07-01DOI: 10.21608/ajnsa.2023.90549.1502
Zainab Helmy, asmaa amein, Mona Ahmed
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{"title":"Formation Charginos and Dark matter from electron- positron annihilation","authors":"Zainab Helmy, asmaa amein, Mona Ahmed","doi":"10.21608/ajnsa.2023.90549.1502","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.90549.1502","url":null,"abstract":".","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46118123","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}
Pub Date : 2023-04-10DOI: 10.21608/ajnsa.2023.183010.1699
ramadan Abouelkher, ashraf Abdel Lateef, Abd el-fattah Helal
{"title":"REE Analyses in Some Geological Standard Reference Materials utilizing LA-ICP-MS and ICP-MS Techniques","authors":"ramadan Abouelkher, ashraf Abdel Lateef, Abd el-fattah Helal","doi":"10.21608/ajnsa.2023.183010.1699","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.183010.1699","url":null,"abstract":"","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42866943","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}
Pub Date : 2023-04-10DOI: 10.21608/ajnsa.2023.171336.1657
A. Soliman, I. Ali, M. Khalil
In this study, Fe 3 O 4 @SiO 2 @FeOOH has been prepared and used as an adsorbent to eradicate Cr(VI) from aqueous media. Fe 3 O 4 @SiO 2 @FeOOH has been characterized by various characterization methods. Various factors on chromium adsorption such as the effect of pH, temperature, adsorbent dose, Cr(VI) concentration
{"title":"Preparation of magnetically separable Fe3O4 @ SiO2@ FeOOH nanoparticles for effective removal of Cr (VI) from aqueous solution","authors":"A. Soliman, I. Ali, M. Khalil","doi":"10.21608/ajnsa.2023.171336.1657","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.171336.1657","url":null,"abstract":"In this study, Fe 3 O 4 @SiO 2 @FeOOH has been prepared and used as an adsorbent to eradicate Cr(VI) from aqueous media. Fe 3 O 4 @SiO 2 @FeOOH has been characterized by various characterization methods. Various factors on chromium adsorption such as the effect of pH, temperature, adsorbent dose, Cr(VI) concentration","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42526245","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}
Pub Date : 2023-04-10DOI: 10.21608/ajnsa.2023.178150.1693
S. Ibrahim, A. Ali, wagdi Kansouh, Gamaal Mesbah, A. Doma, H. Hassan, A. El-Khatib
{"title":"Elastic Rubber Composites as Shield against Photons and Neutrons.","authors":"S. Ibrahim, A. Ali, wagdi Kansouh, Gamaal Mesbah, A. Doma, H. Hassan, A. El-Khatib","doi":"10.21608/ajnsa.2023.178150.1693","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.178150.1693","url":null,"abstract":"","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44758778","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}
Pub Date : 2023-04-10DOI: 10.21608/ajnsa.2023.180669.1698
A. Hassan, M. Refaat, S. Fathy, M. Ragaa, Soheir A. Osman, A. Raafat
{"title":".Silver Nanoparticles Attenuate Inflammation aggravation in Hepatocellular Carcinoma in Rats.","authors":"A. Hassan, M. Refaat, S. Fathy, M. Ragaa, Soheir A. Osman, A. Raafat","doi":"10.21608/ajnsa.2023.180669.1698","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.180669.1698","url":null,"abstract":"","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48370118","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}
Pub Date : 2023-04-10DOI: 10.21608/ajnsa.2023.175458.1686
O. Saad, H. Taha
{"title":"Taylor Series Approach to Grey Multiobjective Integer linear Fractional Programming Problem and A case study for environmental economic energy dispatch","authors":"O. Saad, H. Taha","doi":"10.21608/ajnsa.2023.175458.1686","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.175458.1686","url":null,"abstract":"","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46240768","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}
Pub Date : 2023-04-10DOI: 10.21608/ajnsa.2023.167598.1646
fadwa aldawdy, F. Al-jomaily
This paper aims to add a corrective term to Liquid Drop Model (LDM) and Quark – Like Model (QLM), which is the term for closed shells of magic nuclei. This was done by relying on valence nucleons. Fitting to the terms volume, surface, Coulomb repulsion, asymmetry, pairing and shell term in LDM was performed using the least-square method LSM by designing a code in Fortran 95 for 261 magic nuclei within the range (2≤Z≤92), this correct and balance nuclear binding energy values, especially for magic nuclei, with experimental values. A fit of the QLM has also been made in order to correct the values of the nuclear binding energy. The standard deviation (σ) was used as a statistical tool to determine the extent to which the models can be adopted to explain the behavior of magic nuclei, in addition to the high accuracy in determining the experimental nuclear binding energy. The values of the standard deviation are σ= 0.144 and σ= 0.84 for the updated formulas of the Generalized Liquid Drop Mode (GLDM) and the Generalized Quark Like Model (GQLM) respectively.
{"title":"Adding a correction terms for the shell of the Liquid Drop Model and the Quark-Like Model","authors":"fadwa aldawdy, F. Al-jomaily","doi":"10.21608/ajnsa.2023.167598.1646","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.167598.1646","url":null,"abstract":"This paper aims to add a corrective term to Liquid Drop Model (LDM) and Quark – Like Model (QLM), which is the term for closed shells of magic nuclei. This was done by relying on valence nucleons. Fitting to the terms volume, surface, Coulomb repulsion, asymmetry, pairing and shell term in LDM was performed using the least-square method LSM by designing a code in Fortran 95 for 261 magic nuclei within the range (2≤Z≤92), this correct and balance nuclear binding energy values, especially for magic nuclei, with experimental values. A fit of the QLM has also been made in order to correct the values of the nuclear binding energy. The standard deviation (σ) was used as a statistical tool to determine the extent to which the models can be adopted to explain the behavior of magic nuclei, in addition to the high accuracy in determining the experimental nuclear binding energy. The values of the standard deviation are σ= 0.144 and σ= 0.84 for the updated formulas of the Generalized Liquid Drop Mode (GLDM) and the Generalized Quark Like Model (GQLM) respectively.","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42138917","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}
Pub Date : 2023-04-10DOI: 10.21608/ajnsa.2023.171898.1664
Ahmed Elbatrek
{"title":"Leaching the Co-Precipitated Thorium from Light Rare Earth Double Sulphate and Preparation of High-Grade Thorium Concentrate","authors":"Ahmed Elbatrek","doi":"10.21608/ajnsa.2023.171898.1664","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.171898.1664","url":null,"abstract":"","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42189005","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}
Pub Date : 2023-04-10DOI: 10.21608/ajnsa.2023.172630.1670
Ebtsam Mohamedy
{"title":"Radiation Shielding Against Neutron Using Different Fillers: Review Study","authors":"Ebtsam Mohamedy","doi":"10.21608/ajnsa.2023.172630.1670","DOIUrl":"https://doi.org/10.21608/ajnsa.2023.172630.1670","url":null,"abstract":"","PeriodicalId":8110,"journal":{"name":"Arab Journal of Nuclear Sciences and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43196805","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}
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