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THE THIRD CRITICAL FIELD (HC3) OF SINGLE-CRYSTALLINE K0.73Fe1.68Se2 BY GINZBURG-LANDAU APPROACH 用金兹堡-朗道法测定单晶K0.73Fe1.68Se2的第三临界场
IF 0.2
Suranaree Journal of Science and Technology Pub Date : 2023-04-29 DOI: 10.55766/sujst-2023-02-e01605
A. Changjan, A. Maksuwan, P. Pramuanl, S. Meakniti, P. Udomsamuthirun
{"title":"THE THIRD CRITICAL FIELD (HC3) OF SINGLE-CRYSTALLINE K0.73Fe1.68Se2 BY GINZBURG-LANDAU APPROACH","authors":"A. Changjan, A. Maksuwan, P. Pramuanl, S. Meakniti, P. Udomsamuthirun","doi":"10.55766/sujst-2023-02-e01605","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01605","url":null,"abstract":"In this paper, two-band Ginzburg-Landau (GL) equations for magnetic superconductors were solved analytically to determine the temperature dependence of surface critical magnetic field (Hc3). By variation method analytically from 1st GL equations and modified to the Changjan & Udomsamuthirun’s temperature dependence model. We found that, our model could find a good agreement with the experimental data of single-crystalline K0.73Fe1.68Se2 superconductors vicinity the critical temperature scenery and the ratio Hc3/Hc2 (where Hc2 is the upper critical field of single-crystalline K0.73Fe1.68Se2) indicated powerful temperature dependence.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"60 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85873323","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
THE INFLUENCE OF SILICON ELEMENT-ADDED DLC FILM ON Ti-6Al-4V 添加硅元素的DLC膜对Ti-6Al-4V的影响
IF 0.2
Suranaree Journal of Science and Technology Pub Date : 2023-04-29 DOI: 10.55766/sujst-2023-02-e01607
N. Moolsradoo, S. Watanabe
{"title":"THE INFLUENCE OF SILICON ELEMENT-ADDED DLC FILM ON Ti-6Al-4V","authors":"N. Moolsradoo, S. Watanabe","doi":"10.55766/sujst-2023-02-e01607","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01607","url":null,"abstract":"Silicon added diamond-like carbon films fabricated from C2H2:TMS mixture were used to study the influence of silicon content on the deposition and tribological properties of films prepared on Ti-6Al-4V substrate by using plasma-based ion implantation (PBII). The structure of the film was analyzed by Raman spectroscopy. Hardness and elastic modulus of the film were measured by nano-indentation hardness tester. Tribological propertiesof the film were performed by using ball-on-disk friction tester. The results indicate that with the increasing silicon content in the pure DLC film, the friction coefficient increases. The hardness and elastic modulus of Si-DLC film can increase to a value of up to 31.1 GPa and 200.1 GPa with a silicon content of 13.1 at.%. This is because the greater C content. The Si-DLC films with Si content of 13.1 at.% (C:Si/1:2) and 14.3 at.% (C:Si/1:6) shows a low friction coefficient of 0.2, which is considerable improvement in the tribological properties. This is due to the high hardness and elastic modulus.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"os-24 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87402187","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
STRUCTURAL AND MECHANICAL PROPERTIES OF TiAlN AND TiAlN GRADIENT FILMS DEPOSITED BY REACTIVE PULSED DC MAGNETRON SPUTTERING 反应性脉冲直流磁控溅射制备TiAlN和TiAlN梯度薄膜的结构和力学性能
IF 0.2
Suranaree Journal of Science and Technology Pub Date : 2023-04-27 DOI: 10.55766/sujst-2023-02-e01594
K. Aiempanakit, Montri Aiempanakit, Jariyaporn Rukkun, Pimchanok Reakaukot, Witthawat Wongpisan, K. Waree
{"title":"STRUCTURAL AND MECHANICAL PROPERTIES OF TiAlN AND TiAlN GRADIENT FILMS DEPOSITED BY REACTIVE PULSED DC MAGNETRON SPUTTERING","authors":"K. Aiempanakit, Montri Aiempanakit, Jariyaporn Rukkun, Pimchanok Reakaukot, Witthawat Wongpisan, K. Waree","doi":"10.55766/sujst-2023-02-e01594","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01594","url":null,"abstract":"TiAlN and TiAlN gradient films were deposited on Si substrates by reactive pulsed DC magnetron sputtering. The crystal structure and morphology of TiAlN films were characterized via X-ray diffraction (XRD), and field emission scanning electron microscope (FE-SEM), respectively. Moreover, elemental composition, hardness, and adhesion of TiAlN films were analyzed by energy-dispersive X-ray spectroscopy (EDS), nanoindentation test, and scratch test, respectively. The TiAlN films and TiAlN gradient films showed columnar structure and cubic crystal structure with different orientation planes. The elemental mapping of TiAlN gradient films clearly demonstrated the TiAlN gradient films. TiAlN gradient films have slightly lower hardness compared to TiAlN films while adhesion of the films increases.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"6 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81698096","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
FABRICATION OF GRANULATED FOAM GLASSES FOR LIGHTWEIGHT CONCRETE APPLIED FOR THERMAL AND SOUND INSULATION 用于隔热隔音的轻质混凝土用颗粒泡沫玻璃的研制
IF 0.2
Suranaree Journal of Science and Technology Pub Date : 2023-04-27 DOI: 10.55766/sujst-2023-02-e01606
P. Sooksaen, Pakpum Jaiya
{"title":"FABRICATION OF GRANULATED FOAM GLASSES FOR LIGHTWEIGHT CONCRETE APPLIED FOR THERMAL AND SOUND INSULATION","authors":"P. Sooksaen, Pakpum Jaiya","doi":"10.55766/sujst-2023-02-e01606","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01606","url":null,"abstract":"Granulated foam glass aggregates were fabricated and applied as fillers in lightweight concrete. Soda lime silicate based glass was used as the main raw material in the foam glass process. Firing temperatures in the range of 820-850ºC were suitable for the foaming process. Granulation was processed using a rotary granulator and heated to expand in an electric rotary furnace. Foaming at 840ºC showed overall properties suitable for applying as a filler in lightweight concrete fabrication e.g. low density, high porosity, uniform of pore size. Foam glass granules processed at 840ºC were mixed with cement paste in the ratios of 5, 10, 15, and 20 vol% to study for bulk density, compressive strength, thermal conductivity, thermal resistivity and sound absorption. Overall, increasing foam glass content in concrete caused a decrease in bulk density, compressive strength and thermal conductivity coefficient. In contrast, thermal resistance and sound absorption coefficient of the foam glass filled lightweight concretes improved significantly.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88717349","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
DESIGN AND DEVELOPMENT OF 3D ROTATIONAL BIOREACTOR FOR 3D CELL CULTURE 用于三维细胞培养的三维旋转生物反应器的设计与开发
IF 0.2
Suranaree Journal of Science and Technology Pub Date : 2023-04-26 DOI: 10.55766/sujst-2023-02-e01601
C. Chamroon, K. Thunsiri, S. Kumphune, W. Wattanutchariya, K. Rattanamongkhonkun
{"title":"DESIGN AND DEVELOPMENT OF 3D ROTATIONAL BIOREACTOR FOR 3D CELL CULTURE","authors":"C. Chamroon, K. Thunsiri, S. Kumphune, W. Wattanutchariya, K. Rattanamongkhonkun","doi":"10.55766/sujst-2023-02-e01601","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01601","url":null,"abstract":"Currently, cell and tissue culture are a key to success for regenerative medicine and the pharmaceutical industry for implementing new therapeutic concepts. Cell culture is a complex process in which cells are grown under controlled conditions. Three-dimensional (3D) scaffolds provide space for cell adhesion and growth in 3D structures. However, in 3D cell culture, the ability to supply nutrients and oxygen, and the simultaneous removal of waste products and metabolites are the limiting factors for cells survival, due to nutrient starvation and metabolite toxicity. Therefore, an in-house 3D rotational bioreactor, for 3D cell culture, was designed, fabricated, and developed based on a chitosan porous scaffold. The 3D rotational bioreactor provides a continuously moving culture medium led to high rates of mass transfer throughout the scaffolds. The rotation speed and duration are programable and provide a continuous free flow during the rotating period. The results demonstrated the potential of an in-house 3D rotational bioreactor for better nutrient supply and waste transfer systems outweighs the conventional cell culture technique.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"75 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82281545","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
VIBRATION ISOLATION SCHEME BASED ON ELECTROMAGNETIC SPRING 基于电磁弹簧的隔振方案
IF 0.2
Suranaree Journal of Science and Technology Pub Date : 2023-04-26 DOI: 10.55766/sujst-2023-02-e01602
P. Thamboon, Tanatip Mayoon, N. Tanasanchai, Puripong Suthisopapan, Waranont Anukool
{"title":"VIBRATION ISOLATION SCHEME BASED ON ELECTROMAGNETIC SPRING","authors":"P. Thamboon, Tanatip Mayoon, N. Tanasanchai, Puripong Suthisopapan, Waranont Anukool","doi":"10.55766/sujst-2023-02-e01602","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01602","url":null,"abstract":"Sensitive measurements require a vibration isolation system to safeguard against detrimental tremble. Two types of vibration isolation systems - passive and active - are currently implemented. The spring-based passive designs usually accompany with ineffective low-frequency response. Therefore, the active designs, consisting of sensors, feedback control systems, and actuators, are consolidated to improve the total effectiveness of the cancellation performance. In this work, we focus on developing the actuator founded on electromagnetic spring to be incorporated into our compact quantum gravimeter. Each spring-actuated part comprises two repelling Nd magnets positioned face to face inside a solenoid. With this configuration, the spring can also work in the passive mode via repulsive magnetic force. In the active mode, the exerted force is a result of magnetic fields formed by the magnets and the current-controlled solenoid coils. By changing the coil current, the stiffness of the spring can be modified, and thus the displacement can be controlled.  Different sizes of magnets are explored, and their force behaviors in passive and active modes are characterized. The implementation scheme of the actuator in the quantum gravimeter is also discussed.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"7 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77248612","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
STUDY THE EFFECTS OF THE MULTINITE COAT OF THE HIGH SPEED STEEL DRILL BIT IN DRILLING 研究了高速钢钻头多晶涂层在钻井中的作用
IF 0.2
Suranaree Journal of Science and Technology Pub Date : 2023-04-25 DOI: 10.55766/sujst-2023-02-e01577
R. Borrisutthekul, Chutimon Makee, Usanee Kitkamthorn, P. Mitsomwang, Nakorn Chayapiwut, Areeya Jaisue, Kabasawa Hitoshi
{"title":"STUDY THE EFFECTS OF THE MULTINITE COAT OF THE HIGH SPEED STEEL DRILL BIT IN DRILLING","authors":"R. Borrisutthekul, Chutimon Makee, Usanee Kitkamthorn, P. Mitsomwang, Nakorn Chayapiwut, Areeya Jaisue, Kabasawa Hitoshi","doi":"10.55766/sujst-2023-02-e01577","DOIUrl":"https://doi.org/10.55766/sujst-2023-02-e01577","url":null,"abstract":"Drilling is an important metal manufacturing processes. Drill bits are used in drilling to create holes. Wear of drill bits can have an adverse effect on the quality of the drilling hole. To increase the wear resistance of drill bits, surface modifications have been introduced and studied their effectiveness. Multinite coating is a candidate for surface modification techniques to increase wear resistance of the drill bits. In this study, the effect of multinite coating on the wear resistance of drill bits has been investigated. Two types of 6 mm diameters drill bits, the uncoated high speed steel, and the multinite coated high speed steel drill bits, were used to create the hole with 30 mm in depth on ASTM A36 steel. The drilling parameters were 1,100 rpm of rotation speed and 135 mm/min of the feed rate. The thrust force and the cutting torque during drilling were measured by a force sensor. Flank wear on the drill bits were measured by overlap image technique. Also, the roughness of hole surfaces were investigated. Results showed that the higher surface hardness of multinite coated high speed steel drill bit led to a lower flank wear rate at the beginning of drilling. Consequently, built-up of chip on the multinite coated high speed steel drill bit was less compared to the uncoated one. We conclude that the higher surface hardness of multinite coated high speed steel drill bit improves the wear resistance of drill bit by a decrease of wear rate at the beginning of drilling and a lesser amount of chip built-up on the cutting edge and the surface quality of hole after drilling.","PeriodicalId":43478,"journal":{"name":"Suranaree Journal of Science and Technology","volume":"103 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75364394","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
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