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Structural Investigation and Properties Of Tio2 Thin Film Prepared by Sol-Gel Spin Coating 溶胶-凝胶自旋镀膜制备Tio2薄膜的结构与性能研究
Pub Date : 2022-11-01 DOI: 10.13057/ijap.v12i2.59567
D. G. Saputri, M. K. bin Ahmad, A. Supriyanto, A. Nasyori, S. I. Kunya, Nurul Amiera Shahida Maarof, Siti Nurhaziqah Abd Majid, Anis Zafirah Mohd Ismail, Shazleen Ahmad Ramli
We report the structural properties of TiO2 (Titanium dioxide) thin films grown using sol-gel spin coating method for temperature treatment (with temperature 50o C and without temperature) The difference in temperature is carried out to determine changes in the surface of the sample by using heating or not. Ideally, the thickness of the TiO2 layer ranges from 10-15 μm, therefore in this study it was carried out in 5 layers. Field Emission Scanning Electron Microscopy (FESEM) consist of surface morphology, Cross-section sample, and EDX images, respectively, providing the structure of the surface. The result confirm that temperature treatment can damage the surface coating, this is proven by the shape of the crack in the coating.
我们报道了溶胶-凝胶自旋镀膜法生长的TiO2(钛白粉)薄膜的结构特性,并对其进行了温度处理(温度为50℃和无温度),通过温度的差异来确定样品在加热或不加热时表面的变化。理想情况下,TiO2层的厚度在10-15 μm之间,因此本研究分5层进行。场发射扫描电子显微镜(FESEM)分别由表面形貌、横截面样品和EDX图像组成,提供了表面的结构。结果表明,温度处理会破坏涂层的表面,这一点从涂层裂纹的形状上得到了证明。
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引用次数: 0
Pengaruh Pemberian Agen Kontras Pewarna Sintetik pada Jaringan Biologis terhadap Hasil Pencitraan Fotoakustik 针对光声图像结果的生物网络合成彩色造影剂Granter
Pub Date : 2022-11-01 DOI: 10.13057/ijap.v12i2.57219
Miftahul Janna, M.Si. Mitrayana, Rini Widyaningrum
An experiment to investigate the influence of synthetic dye contrast agent in photoacoustic imaging of biological tissue was conducted in this study. This study uses a simple phocoacoustic imaging system consists of three main components, i.e., a diode laser, condenser microphone, and a custom-build X-Y stage. Characterization was performed on the main components of the system to obtain the appropriate settings on imaging the biological tissue in this study. The results of the optimal frequency and duty cycle for laser modulation in this study were 19000 Hz and duty cyle of 40%, respectively. The addition of a contrast agent aims to improve the quality of the image by comparing the sample with methylene blue contrast agent, the sample with methyl red and the sample without contrast agent. The increases of acoustic intensity level is in proportion with the contrast agent concentration. The difference in the photoacoustic images reveal that the sample with methylene blue contrast agent has the highest acoustic intensity level compared to both sample with methyl red contrast agent and the sample without contrast agent. Therefore, this research proves that a photoacoustic imaging system can be developed to image biological tissue with a contrast agent and methylene blue has greater potential than methyl red to be used as a contrast agent in photoacoustic imaging.
研究了合成染料造影剂对生物组织光声成像的影响。这项研究使用了一个简单的光声成像系统,该系统由三个主要组件组成,即二极管激光器、电容麦克风和定制的X-Y舞台。在本研究中,对系统的主要组件进行了表征,以获得对生物组织成像的适当设置。本研究中激光调制的最佳频率和占空比分别为19000Hz和40%。造影剂的添加旨在通过比较具有亚甲基蓝造影剂的样品、具有甲基红的样品和不具有造影剂的样本来提高图像质量。声学强度水平的增加与造影剂浓度成比例。光声图像的差异表明,与具有甲基红造影剂的样品和不具有造影剂的样本相比,具有亚甲基蓝造影剂的试样具有最高的声强度水平。因此,本研究证明,可以开发一种光声成像系统来用造影剂对生物组织成像,并且亚甲基蓝比甲基红更有潜力用作光声成像中的造影剂。
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引用次数: 0
Morphological and Mechanical Study of Gelatin/Hydroxyapatite Composite based Scaffolds for Bone Tissue Regeneration 明胶/羟基磷灰石复合材料骨组织再生支架的形态学和力学研究
Pub Date : 2022-11-01 DOI: 10.13057/ijap.v12i2.59365
Moh Rifqi Nawafi, Masruroh Masruroh, D. Santjojo
Gelatin-Hydroxyapatite (GHA) composite has been synthesized as a scaffold in bone tissue engineering. The purpose of this study was to find the optimal composition of the GHA scaffold composite which has the best mechanical properties. The independent variable in this study was the composition of HAp. Hydroxyapatite was synthesized by precipitation method from Ca(OH)2 and (NH4)2HPO4 as raw materials. Scaffold from GHA Composite was made by freeze-drying technique with freezing time for 8 hours at -80º C and drying with lyophilizer. The results were characterized using XRD, optical microscopy and tested for compressive strength. The results of the XRD showed that there was no change in a compound or the formation of new bonds on the GHA scaffold when it became a composite which was indicated by the absence of new peaks. It is also known that the peaks decrease in intensity as the amount of polymer in the composite increases. The highest degree of crystallinity was found in the 1:3 GHA sample because it had the highest concentration of HAp. The results of observations with an optical microscope showed that the most homogeneous pore surface morphology was GHA 1:2 with an average pore size of 225.12 ± 16.57 μm. From the results of the compressive strength test, the best value for the 1:2 GHA scaffold was 18.1 ± 0.61 MPa. The values obtained by this scaffold are following the minimum requirements for canceled scaffold so that it can be used as a scaffold candidate in bone tissue engineering.
制备了明胶-羟基磷灰石复合材料作为骨组织工程中的支架材料。本研究的目的是寻找具有最佳力学性能的GHA支架复合材料的最佳组成。本研究的自变量是HAp的组成。以Ca(OH)2和(NH4)2HPO4为原料,采用沉淀法合成了羟基磷灰石。采用冻干技术制备GHA复合材料支架,冷冻时间为-80℃,冷冻时间为8小时,冻干机干燥。用XRD、光学显微镜对结果进行了表征,并进行了抗压强度测试。XRD结果表明,当GHA支架成为复合材料时,化合物和新键的形成没有变化,这表明没有新的峰。我们还知道,随着复合材料中聚合物含量的增加,峰的强度会降低。在1:3的GHA样品中发现结晶度最高,因为它具有最高的HAp浓度。光学显微镜观察结果表明,孔表面形貌最均匀,为GHA 1:2,平均孔径为225.12±16.57 μm;从抗压强度试验结果来看,1:2 GHA支架的最佳抗压强度值为18.1±0.61 MPa。该支架获得的数值符合取消支架的最低要求,因此可以作为骨组织工程中的候选支架。
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引用次数: 0
Conversion of Oil Shale To Liquid Hydrocarbons as A New Energy Resources Using Iron (Fe)-Pillared Clay (Kaolinite) Catalyst 利用铁(Fe)柱撑粘土(高岭土)催化剂将油页岩转化为液态烃
Pub Date : 2022-11-01 DOI: 10.13057/ijap.v12i2.58414
O. Dewanto, Istifani Ferucha, D. Darsono, Sri Rizky
In the context of new energy exploration, oil shale is currently a source of energy that is being developed so that it can be used as an alternative energy in the future. Based on this background, it is important to research the conversion method of oil shale to liquid hydrocarbons. The method used is using clay (kaolinite) catalyst and  iron (Fe)-pillared clay (kaolinite) catalyst. Clay catalyst products are capable of making organic mature faster and even requiring a lower temperature for the changes (through thermal cracking of non-volatile organic material). The addition of Fe metal in the clay catalyst product to oil shale, causing the surface area of the natural clays were significantly increased, then the volume of micro pore were also increased, it causes the organic material to mature faster and the temperature required for the change is less than the shale material without Fe. The catalyst method by the pillarization technique able to increase the surface area and pore volume, thus accelerating the reaction and changing the reaction rate to be greater. It is observed that clay catalyst products can serve as catalysts for accelerating organic maturation reactions. if compared between the clay material  of OD1-Ast1 (50% clay-50% organic), OD1-Ast2 (33% clay-67% organic), and the OD1-Ast3 shale material (67% clay - 33% organic),then OD1-Ast3 has a faster reaction rate. Comparison of clay material is smaller than organic, then the properties of the catalyst product to accelerate the reaction are reduced, such as the OD1-Ast2 shale material has a slow reaction rate compared to the OD1-Ast3 shale material. The addition of Fe metal in the clay catalyst product to the OD1-Ast2 shale material, resulting in OD1-Ast2-Fe shale material (75% OD1-Ast2 and 25% Fe) having a faster reaction rate than before the addition of Fe metal.The design of heavy (%) clay (kaolinite) and Fe pilaration on oil shale were greatly influence the change of TOC values when heated,then affecting maturation and Tmax. The temperature of maturation and Tmax as the main parameters of conversion of oil shale to liquid hydrocarbon. This method supports the development of science and technology in the field of exploitation and processing of natural resources.
在新能源勘探的背景下,油页岩目前是一种正在开发的能源,以便在未来用作替代能源。基于这一背景,研究油页岩转化为液态烃的方法具有重要意义。所使用的方法是使用粘土(高岭石)催化剂和铁(Fe)柱撑粘土(高岭土)催化剂。粘土催化剂产品能够使有机物更快地成熟,甚至需要更低的温度来改变(通过非挥发性有机材料的热裂化)。在油页岩中添加粘土催化剂产物中的铁金属,使天然粘土的表面积显著增加,然后微孔体积也增加,使有机材料更快成熟,变化所需的温度低于不含铁的页岩材料。通过柱撑技术的催化剂方法能够增加表面积和孔体积,从而加速反应并使反应速率变大。观察到粘土催化剂产物可以用作加速有机成熟反应的催化剂。如果在OD1-Ast1(50%粘土-50%有机)、OD1-Ast2(33%粘土-67%有机)的粘土材料和OD1-Ast3页岩材料(67%粘土-33%有机)之间进行比较,则OD1-Ast三具有更快的反应速率。粘土材料的比较小于有机材料,则催化剂产物加速反应的性能降低,例如OD1-Ast2页岩材料与OD1-Ast3页岩材料相比具有较慢的反应速率。将粘土催化剂产物中的Fe金属添加到OD1-Ast2页岩材料中,导致OD1-Ast2-Fe页岩材料(75%的OD1-Ast 2和25%的Fe)具有比添加Fe金属之前更快的反应速率。油页岩上重(%)粘土(高岭石)和铁的设计对加热时TOC值的变化有很大影响,进而影响成熟度和Tmax。成熟温度和Tmax是油页岩转化为液态烃的主要参数。这种方法支持自然资源开发和加工领域的科学技术发展。
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引用次数: 0
Pendekatan Hukum Stokes Pada Proses Terjadinya Slag Untuk Meningkatkan Efektifitas Pembersihan Cairan Logam Pada Proses Peleburan Besi Cor 斯托克斯在斯拉格过程中的法律方法,以提高铸铁冶炼过程中净化金属液的有效性
Pub Date : 2022-11-01 DOI: 10.13057/ijap.v12i2.57997
M. G. Nadi, Cecep Ruskandi, Aris Siswanto, Ekom Koswara
Tujuan dari penelitian ini adalah untuk meningkatkan efektifitas pembersihan slag pada proses peleburan besi cor. Penelitian ini menghasilkan perhitungan kecepatan terminal slag muncul ke permukaan tanur induksi berdasarkan pendekatan Hukum Stokes pada masing-masing slag yang muncul saat proses peleburan besi cor. Setiap pengecoran besi cor diambil tiga buah sampel berdasarkan waktu tercepat pada slag yang sangat ringan, waktu terlambat yang dimiliki oleh slag terberat dan waktu ekstrem sebagai pembanding. Hasil dari setiap sampel dilakukan pengujian karakterisasi seperti bentuk, ukuran dan komposisi kimia pada setiap sampel yang kemudian disesuaikan dengan perhitungan yang telah dibuat. Karakterisasi dianalisa dengan menggunakan X-ray diffraction, Scanning micrsocope elektro dan energy dispersive spectroscopy micro analysis. Hasil menunjukkan bahwa pendekatan hukum stokes untuk memprediksi slag mencapai permukaan mendapatkan hasil yang sesuai bahwa seluruh slag mencapai permukaan pada waktu t = 230 s. Slag yang muncul pada waktu t = 300 s merupakan slag yang terbentuk akibat interaksi cairan dengan permukaan yang bukan merupakan slag yang terjadi dari raw material yang digunakan. Penelitian ini berhasil untuk meminimalisir terbentuknya slag pada setiap pengecoran besi cor menggunakan tanur induksi.
这项研究的目的是提高冶炼炉渣的清洗过程的有效性,铸铁。这些研究产生了计算终端速度感应炉炉渣浮出水面斯托克斯定律的方法根据各人冶炼炉渣过程中出现的铸铁铸造。每个铸铁三个样本根据驾驶时间最快的炉渣很轻,时间的流逝是最重的石板和极端的时间所拥有的。每个样本的结果对每个样本进行了形状、大小和化学成分的描述测试,然后根据所作的计算进行调整。使用x射线衍射、定向电扫描和全谱分析分析特征特征微分析。结果表明,斯托克斯预测线轴表面的方法得到了相应的结果,即整个线轴在t = 230 s时到达表面。在t = 300 s时出现的Slag是由液体与表面的相互作用而形成的Slag这项研究成功地将每个铸铁铸造厂的木块的生产最小化。
{"title":"Pendekatan Hukum Stokes Pada Proses Terjadinya Slag Untuk Meningkatkan Efektifitas Pembersihan Cairan Logam Pada Proses Peleburan Besi Cor","authors":"M. G. Nadi, Cecep Ruskandi, Aris Siswanto, Ekom Koswara","doi":"10.13057/ijap.v12i2.57997","DOIUrl":"https://doi.org/10.13057/ijap.v12i2.57997","url":null,"abstract":"Tujuan dari penelitian ini adalah untuk meningkatkan efektifitas pembersihan slag pada proses peleburan besi cor. Penelitian ini menghasilkan perhitungan kecepatan terminal slag muncul ke permukaan tanur induksi berdasarkan pendekatan Hukum Stokes pada masing-masing slag yang muncul saat proses peleburan besi cor. Setiap pengecoran besi cor diambil tiga buah sampel berdasarkan waktu tercepat pada slag yang sangat ringan, waktu terlambat yang dimiliki oleh slag terberat dan waktu ekstrem sebagai pembanding. Hasil dari setiap sampel dilakukan pengujian karakterisasi seperti bentuk, ukuran dan komposisi kimia pada setiap sampel yang kemudian disesuaikan dengan perhitungan yang telah dibuat. Karakterisasi dianalisa dengan menggunakan X-ray diffraction, Scanning micrsocope elektro dan energy dispersive spectroscopy micro analysis. Hasil menunjukkan bahwa pendekatan hukum stokes untuk memprediksi slag mencapai permukaan mendapatkan hasil yang sesuai bahwa seluruh slag mencapai permukaan pada waktu t = 230 s. Slag yang muncul pada waktu t = 300 s merupakan slag yang terbentuk akibat interaksi cairan dengan permukaan yang bukan merupakan slag yang terjadi dari raw material yang digunakan. Penelitian ini berhasil untuk meminimalisir terbentuknya slag pada setiap pengecoran besi cor menggunakan tanur induksi.","PeriodicalId":31930,"journal":{"name":"Indonesian Journal of Applied Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66127330","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
Sintesis dan Karakterisasi Nanofiber Komposit PVA/SiO2 dari Silika Sekam Padi Menggunakan Metode Electrospinning 利用电纺丝方法合成和模拟从米糠中提取的PVA/SiO2复合材料
Pub Date : 2022-04-12 DOI: 10.13057/ijap.v12i1.55730
Iqbal Firdaus, Simon Sembiring, J. Junaidi, Andrean Johandra, TB Ikhwan Rifansyah, Rizky Rahmadi, Oki Ade Putra

Telah berhasil dibuat membrane separator yang berpotensi diaplikasikan untuk baterai lihitum-ion, membrane separator digunakan untuk proses transfer ion dan mencegah terjadinya arus pendek. Dalam penelitian ini membrane separator PVA/SiO2 disintesis memggunakan metode electrospinning dengan variasi berat SiO2 (0, 0.6, 1.2, 2) wt%. SiO2 yang digunakan adalah hasil ekstraksi silika sekam padi. Pengaruh penambahan SiO2 pada PVA untuk meningkatkan karakteristik membrane diantaranya porositas, dan stabilitas pada suhu tinggi. Hasil membrane yang berhasil dibuat PVA, dan PVA/SiO2 membentuk serat nano dengan ukuran diameter serat semakin kecil ketika ditambahkan  SiO2 yaitu ~ 220 nm, ukuran diameter semakin kecil  meningkatkan porositas membrane dan meningkatkan kinerja membrane dengan stabilitas suhu 165 oC

已成功创建了应用于离子肌肉电池的潜在膜分离器,该膜分离器用于离子转移过程并防止短路。在本研究中,PVA/SiO2膜分离器采用电纺丝方法,SiO2(0,0.6,1.2,2)wt%变化较大。所使用的SiO2是从硅土稻田中提取的结果。将SiO2添加到PVA中以增强膜之间的孔隙率和高温稳定性。膜的结果是由PVA制成的,当PVA/SiO2加入到SiO2中时,形成了具有较小纤维直径的纳米纤维,其直径为~220nm,在165℃下具有较小的直径尺寸,增加了膜孔隙率并提高了膜性能。
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引用次数: 1
Sintesis dan Karakterisasi MgB2 dengan Penambahan Nano-SiC melalui Metode Reaksi Padat 固体反应法制备MgB2及其添加纳米SiC的特性
Pub Date : 2022-04-12 DOI: 10.13057/ijap.v12i1.49136
S. Yudanto, L. R. Hakim, Muhammad Emir Hanif Rasyadi, Agung Imaduddin, Andika Widya Pramono

Sintesis material MgB2 dengan penambahan nano-SiC telah kami lakukan menggunakan metode reaksi padat. Evaluasi penambahan nano-SiC terhadap struktur kristal dan suhu kritis MgB2 dilakukan melalui pengujian difraksi sinar-X dan cryogenic magnetometer. MgB2+x wt.% nano-SiC dengan x=0, 5, 10, dan 15 dipersiapkan dengan penggerusan manual dan disintering pada suhu 800°C selama 2 jam. Berdasarkan analisis difraksi sinar-X, penambahan nano-SiC menyebabkan penurunan nilai konstanta kisi-a dari 3,0848 Å menjadi 3,0792 Å. Distorsi pada konstanta kisi-a merupakan dampak dari karbon yang mensubstitusi boron. Hasil uji resistivitas menunjukkan bahwa penambahan nano-SiC menurunkan nilai Tc-zero dari material MgB2.

采用固体反应法合成了添加纳米SiC的MgB2材料。通过X射线衍射和低温磁强计测试,对纳米SiC在晶体结构和临界温度MgB2中的添加进行了评估。MgB2+x wt.%x=0、5、10和15的纳米SiC,通过在800°C下手动钻孔和挖出2小时制备。基于X射线衍射分析,纳米SiC的加入导致a射线从30848Å不断减少到30792Å。a层常数的畸变是碳取代硼的影响。电阻测试结果表明,纳米SiC的加入降低了MgB2材料的Tc零值。
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引用次数: 2
Kajian Literatur Karakteristik Lapisan Keramik Oksida yang Ditumbuhkan Diatas Paduan Zirkonium dengan Metode Plasma Electrolytic Oxidation 用等离子体电解氧化法在锆单元上生长的氧陶瓷层的试验文献特性
Pub Date : 2022-04-12 DOI: 10.13057/ijap.v12i1.49853
M. K. Ajiriyanto, A. Anawati
Bahan Zircaloy-4 telah digunakan sebagai bahan kelongsong elemen bakar reaktor nuklir tipe pressurized water reactor, PWR. Kelongsong Zr-4 tersebut menghadapi kondisi temperatur dan tekanan tinggi, iradiasi neutron, dan penyerapan gas (hidrogen, oksigen).  Pada suhu dan tekanan tinggi, paduan Zr-4 mudah mengalami oksidasi dan kecepatan oksidasi meningkat pada suhu 800-1200°C. Upaya untuk meningkatkan ketahanan oksidasi kelongsong Zr-4 adalah pelapisan permukaan dengan metode seperti thermal spray, physical vapor deposition, cladding, heat treatment, dan chemical vapor deposition. Pada artikel review ini menggambarkan dan menjelaskan metode pelapisan alternatif yaitu plasma electrolytic oxidation (PEO) yang secara khusus diaplikasikan pada substrat zirkonium. Aspek lain yang dibahas adalah parameter proses yang mempengaruhi kualitas lapisan, dan karakteristik yang khas dari lapisan yang dihasilkan dengan metode PEO. Plasma electrolytic oxidation (PEO) merupakan metode pelapisan yang menjanjikan untuk menghasilkan lapisan oksida keramik dengan kekuatan mekanik dan termal yang tinggi. Proses PEO menggunakan peralatan yang sederhana dan bahan yang ramah lingkungan. Lapisan oksida zirkonium (ZrO2) yang terbentuk pada permukaan substrat Zr-4 mempunyai titik lebur sangat tinggi yaitu 2715°C dan tampang lintang neutron termal sangat rendah yaitu 0,18 barn. Karakteristik lapisan oksida keramik yang dihasilkan dipengaruhi oleh parameter proses PEO yaitu rapat arus, jenis dan konsentrasi elektrolit, bahan aditif pada elektrolit dll. Hingga saat ini, proses pelapisan metode PEO pada paduan Zirkonium (Zr) relatif belum banyak dibahas secara mendalam jika dibandingkan dengan logam lainnya seperti Al, Mg, dan Ti. Salah satu permasalahan yang masih dihadapi dalam pelapisan PEO terhadap substrat Zr-4 adalah porositas relatif tinggi dan jumlah fasa t-ZrO2 pada inner dan outer layer yang relatif rendah yang dapat mengurangi kekuatan mekanik dan ketahanan korosinya. Penyelesaian masalah untuk meningkatkan kualitas lapisan PEO adalah dengan optimasi parameter proses PEO yaitu rapat arus ,dan jenis dan konsentrasi elektrolit. Dalam kajian literatur ini didiskusikan strategi optimasi rapat arus, penggunaan variasi elektrolit, dan penambahan aditif pada proses PEO  untuk meningkatkan sifat mekanik dan korosi lapisan Modifikasi permukaan dengan proses PEO dapat diaplikasikan pada paduan zirkonium termasuk paduan Zr-4 sebagai komponen atau kelongsong bahan bakar reaktor nuklir tipe PWR. Metode PEO ini sangat potensial digunakan pada kelongsong Zr-4 untuk meningkatkan ketahanan oksidasi suhu tinggi dan meningkatkan efisiensi bahan bakar didalam reaktor nuklir.
锆合金-4已被用作压水堆型核反应堆PWR的燃料。Zr-4分支面临高温高压条件、中子辐照和气体吸收(氢气、氧气)。在高温高压下,Zr-4单元很容易被氧化,氧化速率在800-1200°C时上升。提高Zr-4阀抗氧化性的努力是使用诸如热喷涂、物理气相沉积、包层、热处理和化学气相沉积的方法进行表面涂层。在这篇综述中,文章描述并解释了另一种过滤方法,即等离子体电解氧化(PEO),它专门应用于锆基板。所讨论的另一个方面是影响层的质量的工艺参数,以及通过PEO方法产生的层的具体特性。等离子体电解氧化(PEO)是一种过滤方法,有望生产出具有高机械和热强度的陶瓷氧化物层。PEO工艺使用简单的工具和环保材料。在基底Zr-4表面形成的氧化锆(ZrO2)层具有2715°C的非常高的宽度和0,18谷仓的非常低的热中子扫掠。所制备的陶瓷氧化物层的特性受当前会议的PEO工艺参数、电解质的类型和浓度、电解质上的添加剂等因素的影响。到目前为止,与Al、Mg和Ti等其他金属相比,在相对锆(Zr)单元中过滤PEO方法的过程还没有得到太多讨论。PEO过滤Zr-4基底的剩余问题之一是相对高的孔隙率和相对低的内层和外层上的t-ZrO2相的数量,这会降低其机械强度和耐腐蚀性。改善PEO层质量的问题的解决方案是通过优化PEO工艺的参数,即流动会,以及电解质的类型和浓度。本文献研究讨论了一种优化闭流、使用电解质变化和在PEO工艺中添加添加剂以改善层的机械性能和腐蚀性的策略。PEO工艺的表面改性可应用于锆装置,包括作为压水堆核反应堆类型的部件或燃料支架的Zr-4装置。这种PEO方法非常有可能用于Zr-4分支,以提高核反应堆的耐温度氧化性和燃料效率。
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引用次数: 0
Comparison of Ni0.6Co0.4Fe2O4 and NiFe2O4 Nanoparticles for Magnetic Characteristics, Synthesized Using Co-Precipitation Method 用共沉淀法合成Ni0.6Co0.4Fe2O4和NiFe2O4纳米粒子的磁性比较
Pub Date : 2022-04-12 DOI: 10.13057/ijap.v12i1.59191
U. Utari, Y. H. K. Dasi, B. Purnama

Comparison of nickel Ni0.6Co0.4Fe2O4   and NiFe2O4 were studied. The co-precipitation method was performed for the whole sample. After annealing of 600°C for 4 hours, the nanoparticles samples evaluated their structural properties by using Fourier Transform Infra-Red (FTIR) and X-Ray Diffraction (XRD). The XRD pattern confirms that the whole samples have the crystalline structure of the face-centered cubic (fcc) inverse spinel. Furthermore, the lattice and crystallite size of NiFe2O4 increased when added Co2+. The FTIR spectrum showed two prominent absorption bands, i.e., at around k of 358 cm-1 and 588 cm-1, where metals at tetrahedral and octahedral sites reflect intrinsic vibrations, respectively.  Finally, the decrease of saturated magnetization MS from 22.2 emu/g and 9.92 emu/g replacement of Co2+ cation with Ni2+.

研究了Ni0.6Co0.4Fe2O4与NiFe2O4的比较。对整个样品进行共沉淀法。在600°C退火4小时后,纳米颗粒样品通过傅里叶变换红外光谱(FTIR)和X射线衍射(XRD)评估其结构性能。XRD图谱证实,整个样品具有面心立方(fcc)反尖晶石的晶体结构。此外,当加入Co2+时,NiFe2O4的晶格和晶粒尺寸增加。FTIR光谱显示出两个显著的吸收带,即在358cm-1和588cm-1的k附近,其中四面体和八面体位置的金属分别反映固有振动。最后,饱和磁化强度MS从22.2emu/g和9.92emu/g降低,Co2+阳离子被Ni2+取代。
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引用次数: 0
Identifikasi Dugaan Situs Purbakala Menggunakan Metode Geolistrik Resistivitas Konfigurasi Wenner di Situs Alassumur, Kabupaten Bondowoso 发现所谓的古代遗址使用温纳的阻抗率配置方法,在Bondowoso区的alas威尔斯遗址
Pub Date : 2022-04-12 DOI: 10.13057/ijap.v12i1.54349
Juan Pandu Gya Nur Rochman, Amien Widodo, Thufeil Amr Adausy, Hanif Dhiyaz Ulhaq F

Penemuan struktur batubata kuno di Desa Alas Sumur, Kecamatan Pujer Kabupaten Bondowoso menjadi menarik untuk diteliti, karena selama ini Kabupaten Bondowoso umumnya berupa peninggalan zaman batu besar yaitu Situs Megalithikum. Tujuan penelitian ini adalah untuk identifikasi struktur batu bata di situs tersebut. Metode yang digunakan adalah metode geolistrik konfigurasi wenner yang dapat menggambarkan kondisi bawah permukaan dan dugaan stuktur batu bata berdasarkan perbedaan nilai resistivitas batuan. Jumlah Lintasan pengukuran sebanyak 4 lintasan, dengan panjang untuk lintasan 1,3, dan 4 sepanjang 48 meter dengan  spasi 1 meter sedangkan lintasan 2 sepanjang 96 meter dengan spasi 2 meter. Data hasil pengolahan berupa data penampang nilai resistivitas. Berdasarkan hasil pengolahan, didapatkan litologi batuan breksi, batuan andesit, dan lempung pasiran. Persebaran nilai resistivitas batuan breksi memiliki range nilai (34 – 101 Ωmeter), batuan andesit memiliki range (102 – 141 Ωmeter), batuan lempung pasiran memiliki range ( 26 – 33 Ωmeter), anomali terdeteksi dengan range nilai (19 - 25Ωmeter) sebagai batubata. Anomali tersebut terdapat pada lintasan 1, 3, dan 4. Penemuan anomali tersebut diharapkan dapat membantu pihak terkait untuk melakukan proses pengembangan selanjutnya.

在基岩井村发现了古老的砖结构,Bondowoso区一带(Bondowoso区)特别有趣,因为在此期间,Bondowoso区主要是巨石时代的遗迹。本研究的目的是确定该地点的砖结构。使用的方法是温纳的地对性排气法,它可以描述他的地下状态,以及基于岩石电阻率差异的所谓砖石结构。测量轨道的长度为4个,长为1.3米,长为4米长,长为100英尺(1.3米),长为100英尺(1米),长为2英尺(96米),长为2米(2米)。电阻率评分数据的处理结果。通过处理,获得了breksi岩石、andesit岩石和沙漠粘土学。Persebaran价值breksi岩石电阻率有太阳城(34 - 101Ω米),安山岩岩石有射程(102 - 141Ω米),岩石pasiran有粘土太阳城(26 - 33Ω米),有价值的射程为异常检测(19 - 25Ω米)作为砖头砸。这些异常发生在1、3和4的轨道上。预计,发现异常可能有助于有关各方进一步发展。
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引用次数: 0
期刊
Indonesian Journal of Applied Physics
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