Materiali in tehnologije最新文献_第3页

EFFECT OF Sc ON THE HYDROGEN-STORAGE PERFORMANCE OF Mg2Ni: A FIRST-PRINCIPLES STUDY Sc 对 Mg2Ni 储氢性能的影响：第一原理研究

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2024-02-06 DOI: 10.17222/mit.2023.980

Guosong Zhu, Xiaoming Du, Fu Li

引用次数: 0

A NEW TYPE OF PLUG-IN FRICTION-STIR LAP WELDING BASED ON THE 6061-T6 ALUMINUM ALLOY 基于 6061-t6 铝合金的新型插入式摩擦搅拌搭接焊

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2024-02-06 DOI: 10.17222/mit.2023.839

Gaowei Cao, Jin Wang, Bo Gao, Kaicheng Mu, Hui Zhang, Baoge Li

{"title":"A NEW TYPE OF PLUG-IN FRICTION-STIR LAP WELDING BASED ON THE 6061-T6 ALUMINUM ALLOY","authors":"Gaowei Cao, Jin Wang, Bo Gao, Kaicheng Mu, Hui Zhang, Baoge Li","doi":"10.17222/mit.2023.839","DOIUrl":"https://doi.org/10.17222/mit.2023.839","url":null,"abstract":"In this study a new type of plug-in friction-stir lap welding (PFSLW) is proposed to prepare welded joints based on 4-mm-thick 6061-T6 aluminum alloy sheet. The differences in the cross-sectional morphology, microstructure, cross-sectional hardness and shear properties between the PFSLW joint and the normal friction-stir lap-welding (FSLW) joint are discussed. The results show that the cross-sectional morphology of the PFSLW joint has undergone changes. The PFSLW joint has a mechanical interlocking structure on the advancing side that is beneficial to the connection strength of the joint. The grain structure differs at the boundary between the thermo-mechanically affected zone (TMAZ) and the heat-affected zone (HAZ), and the PFSLW joints show a more pronounced bending deformation of the grain organization near the boundary. The microhardness of PFSLW joints was increased in the TMAZ and HAZ areas, and the lowest hardness is further away from the center of the weld. The failure load of the PFSLW joint has been improved, the microcracks part of the PFSLW joint has a ridge-like structure. In addition, the actual welding width of PFSLW joints was improved.","PeriodicalId":18258,"journal":{"name":"Materiali in tehnologije","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139799618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DEVELOPMENT OF THE RECYCLING PROCEDURE FOR RAPID ANTIGEN TESTS 开发快速抗原检测的再循环程序

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2024-02-06 DOI: 10.17222/mit.2023.1063

Rebeka Rudolf, D. Feizpour, Ž. Jelen, P. Majerič, Tilen Švarc, M. Zadravec, Timi Gomboc, Aleksandra Kocijan

{"title":"DEVELOPMENT OF THE RECYCLING PROCEDURE FOR RAPID ANTIGEN TESTS","authors":"Rebeka Rudolf, D. Feizpour, Ž. Jelen, P. Majerič, Tilen Švarc, M. Zadravec, Timi Gomboc, Aleksandra Kocijan","doi":"10.17222/mit.2023.1063","DOIUrl":"https://doi.org/10.17222/mit.2023.1063","url":null,"abstract":"The article presents the problem of rapid antigen tests when they become mass waste after use. Based on this, the hypothesis was made that rapid antigen tests can be recycled. Rapid antigen tests, which were used in the Covid-19 epidemic to quickly detect infections in the population or to confirm the presence of the Sars-Cov 2 virus in patients, were intended to limit the spread of the epidemic. To confirm the hypothesis of recycling for rapid antigen tests, the LFIA-REC ATP 150 project was prepared, which was selected for co-financing by the Norwegian Fund. \u0000Rapid antigen tests consist of a sample and conjugate pad, detectable or nitrocellulose membranes and absorbent pads and a plastic case. The function of the sample pad is to evenly absorb the sample (mucus, blood) and lead it to the conjugate pad with a steady flow. Gold nanoparticles (labels) are deposited on the conjugate pad. The key is that the gold nanoparticles are conjugated with capture molecules capable of binding to potentially present antibodies or virus in the sample. \u0000The scope of the research problem thus required the inclusion of various characterization techniques that must be applied to the individual material in the rapid antigen test to subsequently develop an efficient recycling process for the rapid antigen tests. The result of the research presented in this paper represents a newly developed algorithm of characterization techniques, which includes a recommended description of the preparation of samples of key materials from rapid antigen tests. This algorithm successfully achieved the characterization of gold nanoparticles from rapid antigen tests. Based on the developed algorithm, the final part of the project will validate the recycling process of rapid antigen tests, so that they can be recycled, i.e. gold nanoparticles or plastic used in new products. The paper presents the algorithm of characterization techniques with a description of the preparation of material samples from rapid antigen tests.","PeriodicalId":18258,"journal":{"name":"Materiali in tehnologije","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139801289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ACCURACY OF REPLICATION OF SURFACE TEXTURE WITH A CONTACT PROFILE METHOD 用接触剖面法复制表面纹理的精度

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2024-02-06 DOI: 10.17222/mit.2023.823

G. Baršić, Bernard Nujić, V. Šimunović

{"title":"ACCURACY OF REPLICATION OF SURFACE TEXTURE WITH A CONTACT PROFILE METHOD","authors":"G. Baršić, Bernard Nujić, V. Šimunović","doi":"10.17222/mit.2023.823","DOIUrl":"https://doi.org/10.17222/mit.2023.823","url":null,"abstract":"Surface texture is of great importance in specifying the function of a surface. The surface finish of products influences the friction performance, wear resistance, bearing, sliding, lubricating properties, functionality, etc. Replicas of surface textures are widely used in many industries for evaluating the condition of textures when no measurable surfaces are available for measurements or in the case of non-dismantled objects of immense dimensions. The replication’s reliability and accuracy are significant concerns in actual applications. Although there are several parameters, Ra and Rz are still most often defined in technical product documentation as the indicators of whether a surface texture is within certain tolerance limits. In real production conditions, tactile stylus profilometers are still the most common instruments for measuring surface texture. For all the reasons mentioned above, the accuracy of the Technovit® 3040 replica was analysed. The quality of the Technovit® 3040 replica was researched on 15 samples processed with six conventional machining methods. Average roughness parameters Ra and Rz were measured on original surfaces and then compared to replica surfaces. A qualitative comparison of the profile geometries of original surfaces and their replicas was discussed.","PeriodicalId":18258,"journal":{"name":"Materiali in tehnologije","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139799542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MEASUREMENT OF ADHESION PROPERTIES OF Ni2Al3 COATING WITH A MICRO SCRATCH TESTER AND AUTOMATIC SCRATCH TESTER 用微型划痕测试仪和自动划痕测试仪测量 Ni2Al3 涂层的吸附性能

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2024-02-06 DOI: 10.17222/mit.2023.920

Ningning Li, Lei Xu, Jin Peng, Xi Chen, Mingqi Tang, Jiajia Yang, Yan Shang

引用次数: 0

ACCURACY OF REPLICATION OF SURFACE TEXTURE WITH A CONTACT PROFILE METHOD 用接触剖面法复制表面纹理的精度

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2024-02-06 DOI: 10.17222/mit.2023.823

G. Baršić, Bernard Nujić, V. Šimunović

{"title":"ACCURACY OF REPLICATION OF SURFACE TEXTURE WITH A CONTACT PROFILE METHOD","authors":"G. Baršić, Bernard Nujić, V. Šimunović","doi":"10.17222/mit.2023.823","DOIUrl":"https://doi.org/10.17222/mit.2023.823","url":null,"abstract":"Surface texture is of great importance in specifying the function of a surface. The surface finish of products influences the friction performance, wear resistance, bearing, sliding, lubricating properties, functionality, etc. Replicas of surface textures are widely used in many industries for evaluating the condition of textures when no measurable surfaces are available for measurements or in the case of non-dismantled objects of immense dimensions. The replication’s reliability and accuracy are significant concerns in actual applications. Although there are several parameters, Ra and Rz are still most often defined in technical product documentation as the indicators of whether a surface texture is within certain tolerance limits. In real production conditions, tactile stylus profilometers are still the most common instruments for measuring surface texture. For all the reasons mentioned above, the accuracy of the Technovit® 3040 replica was analysed. The quality of the Technovit® 3040 replica was researched on 15 samples processed with six conventional machining methods. Average roughness parameters Ra and Rz were measured on original surfaces and then compared to replica surfaces. A qualitative comparison of the profile geometries of original surfaces and their replicas was discussed.","PeriodicalId":18258,"journal":{"name":"Materiali in tehnologije","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139859677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MEASUREMENT OF ADHESION PROPERTIES OF Ni2Al3 COATING WITH A MICRO SCRATCH TESTER AND AUTOMATIC SCRATCH TESTER 用微型划痕测试仪和自动划痕测试仪测量 Ni2Al3 涂层的吸附性能

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2024-02-06 DOI: 10.17222/mit.2023.920

Ningning Li, Lei Xu, Jin Peng, Xi Chen, Mingqi Tang, Jiajia Yang, Yan Shang

引用次数: 0

NOVEL MAGNETIC ALGINATE/HYDROXYAPATITE COMPOSITE WITH HIGH-EFFICIENCY CADMIUM-ADSORPTION PERFORMANCE 具有高效镉吸附性能的新型磁性海藻酸盐/羟基磷灰石复合材料

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2024-02-06 DOI: 10.17222/mit.2023.927

Xiao Xiao, Jiabei Zhou, Dali Zhou, Liang Li, Yingjiang Wu, Xiang Zhou, Lang Du, Honggen Chen

引用次数: 0

EFFECT OF Zr, Zn AND Cu ADDITIONS ON ELEVATED-TEMPERATURE MECHANICAL PROPERTIES OF AS-EXTRUDED Mg-3Sn-1Ca ALLOY 添加 Zr、Zn 和 Cu 对 ASEXTRUDED Mg-3Sn-1Ca 合金的升温力学性能的影响