Materiali in tehnologije最新文献_第9页

EFFECTS OF PRE-OXIDATION ON HOT CORROSION RESISTANCE OF Al–Si COATINGS 预氧化对铝硅涂层耐热腐蚀性能的影响

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2023-01-25 DOI: 10.17222/mit.2022.645

Haishuang Lv, Yanmei Li, Ya-Bing Li, Naiwen Fan

引用次数: 0

STUDY OF INTERFACIAL ADHESION OF PAVEMENT SEALANTS BASED ON MOLECULAR DYNAMICS 基于分子动力学的路面密封胶界面附着力研究

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2023-01-25 DOI: 10.17222/mit.2022.679

Xiaofeng Huang, Junhui Luo, Cheng Xie, Dadi Cheng, Pengfei Tang, Gang Li, Jie Chen

{"title":"STUDY OF INTERFACIAL ADHESION OF PAVEMENT SEALANTS BASED ON MOLECULAR DYNAMICS","authors":"Xiaofeng Huang, Junhui Luo, Cheng Xie, Dadi Cheng, Pengfei Tang, Gang Li, Jie Chen","doi":"10.17222/mit.2022.679","DOIUrl":"https://doi.org/10.17222/mit.2022.679","url":null,"abstract":"To study the performance of bitumen mixture pavement sealants from their micro-mechanisms, the physical properties of base bitumen, SBS-modified bitumen and epoxy resin sealant as well as the adhesive properties of sealant-aggregate interfaces were studied using a molecular dynamics simulation. The adhesion of a sealant-pavement crack wall was studied using a contact angle test based on the surface energy theory. The results show that the epoxy resin sealant has excellent adhesion properties. Its physical properties and interfacial adhesion work are more significant than those of base bitumen and SBS-modified bitumen. An increase in the SBS can improve base bitumen’s mechanical properties and interfacial interaction. The interaction between three kinds of crack sealants and aggregate is identified as mainly the physical adsorption behavior. The van der Waals force plays a significant role in the adhesion behavior of bitumen crack sealant-aggregate interface. In contrast, the electrostatic force and van der Waals forces significantly affect the epoxy resin binder-aggregate interface. The adhesion work of 90# base bitumen, SBS-modified bitumen and epoxy resin binder for the asphalt pavement crack wall is (37.76, 44.86 and 77.63) mJ/m2, respectively.","PeriodicalId":18258,"journal":{"name":"Materiali in tehnologije","volume":"29 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87139783","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

POTENTIAL BARRIER ESTIMATION WITH A GRAPHICAL METHOD 用图形方法估计势垒

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2023-01-25 DOI: 10.17222/mit.2022.628

S. Merabet, Bilal Djellil

引用次数: 0

PERFORMANCE OF AN EPOXY-FILLER-MODIFIED BAMBOO-REINFORCED CONCRETE SLAB 环氧填料改性竹筋混凝土板的性能研究

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2023-01-25 DOI: 10.17222/mit.2022.637

Seethalakshmi Thangaraj, M. Madasamy

引用次数: 1

COMPARATIVE STUDY OF THE RECOMBINANT ACTIVITY EFFECT AT THE GRAIN BOUNDARIES IN SILICON SOLAR CELLS 硅太阳能电池晶界重组活性效应的比较研究

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2022-12-08 DOI: 10.17222/mit.2022.597

Bilal Djellil, S. Merabet, H. Bouridah

引用次数: 0

ISOLATION OF MICROFIBERS IN THE PROCESSING OF POLYAMIDE FABRICS 聚酰胺织物加工中微纤维的隔离

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2022-12-08 DOI: 10.17222/mit.2022.621

Marzhan Nyssanbek, A. Mukhametov, A. Azimov

{"title":"ISOLATION OF MICROFIBERS IN THE PROCESSING OF POLYAMIDE FABRICS","authors":"Marzhan Nyssanbek, A. Mukhametov, A. Azimov","doi":"10.17222/mit.2022.621","DOIUrl":"https://doi.org/10.17222/mit.2022.621","url":null,"abstract":"In recent years, the problem of the release of polymer microparticles (the so-called microplastics) from textile products has been extensively investigated. The main reason of the release of a large number of plastic microfibers is considered to be machine washing of synthetic clothing. However, approaches aimed at reducing the amounts of detached microfibers (MFs) differ significantly. This paper reviews the existing approaches, presents a method for processing polyamide fabrics with a chitosan solution, and describes the experiments that confirm the feasibility of the proposed method. The formation of a chitosan film on the surface of polyamide fibers was evidenced with the results of scanning electron microscopy. The authors have shown that fabric surface treatment with a 1 % chitosan solution reduces the amount of microfibers released during washing by  60 %. A fluorescent analysis demonstrated that mechanical processing of polyamide fabrics with a higher surface density is associated with a release of a smaller number of microfibers (358 ± 24) MF/g as compared to less dense fabrics (533 ± 16) MF/g. The results obtained in the present study can be used in the development of a standard method for quantifying the amount of synthetic microfibers shed from textile materials during their washing.","PeriodicalId":18258,"journal":{"name":"Materiali in tehnologije","volume":"27 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74093426","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

STRENGTHENING MECHANISM OF 15-5PH STAINLESS STEEL UNDER DIFFERENT AGING TEMPERATURES 15-5ph不锈钢在不同时效温度下的强化机理

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2022-12-08 DOI: 10.17222/mit.2022.535

Bei Li, Chunhui Jin, Guoqiang Li, Jinhua Zhao, Jin-shan Chen, Lifeng Ma

引用次数: 0

NUMERICAL INVESTIGATION OF HVAF-SPRAYED Fe-BASED AMORPHOUS COATINGS hvaf喷涂铁基非晶涂层的数值研究

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2022-12-08 DOI: 10.17222/mit.2022.636

N. Wu, Tingting Li, J. Lian

{"title":"NUMERICAL INVESTIGATION OF HVAF-SPRAYED Fe-BASED AMORPHOUS COATINGS","authors":"N. Wu, Tingting Li, J. Lian","doi":"10.17222/mit.2022.636","DOIUrl":"https://doi.org/10.17222/mit.2022.636","url":null,"abstract":"A numerical analysis was performed to predict the effect of the convergent section geometry of a gun nozzle on the high-velocity air-fuel (HVAF) thermal spray Fe-based amorphous coating (AC) process. A computational fluid dynamics model was applied to investigate the gas-flow field and the behavior of in-flight particles at nozzle entrance convergent section length ranging from 28 mm to 56.8 mm and different shapes of the Laval nozzle convergent section (a straight line and Vitosinski convergence curve). On the one hand, the change in the gas-flame flow characteristics for the Vitosinski curve shows a uniform and stable flame compared with the straight-line curve in the convergent section. The straight-line curve shape of the Laval nozzle convergent section has a higher particle temperature compared with the Vitosinski-curve shape of the Laval nozzle convergent section. The particle dwell time for the straight-line curve shape of the Laval nozzle convergent section is longer than that for the Vitosinski curve shape of the Laval nozzle convergent section. On the other hand, the nozzle entrance convergent section length obviously affects the particle temperature, and the particle dwell time increases with the increasing nozzle entrance convergent section length. By analyzing both the melt status of the particles and particle velocity, the optimal gun configuration (0.7 V) producing low-porosity coatings was predicted. These calculations were experimentally verified by producing a low-porosity (1.37 %) Fe-based AC, fabricated with HVAF using the predicted optimal gun configuration. \u0000 ","PeriodicalId":18258,"journal":{"name":"Materiali in tehnologije","volume":"9 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84731993","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

ANALYSIS OF TEMPERATURE DISTRIBUTION IN LASER ALLOYING OF PURE COPPER 纯铜激光合金化过程中的温度分布分析

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2022-12-08 DOI: 10.17222/mit.2022.551

J. Domagała-Dubiel, D. Janicki, G. Muzia, Jakub Lisicki, J. Ptaszny, J. Kulasa

引用次数: 0

CORROSION AND PROTECTION OF NON-PATINATED, SULPHIDE- AND CHLORIDE-PATINATED BRONZE 未镀铜、硫化物镀铜和氯化物镀铜的腐蚀和防护

IF 0.5 4区材料科学

Materiali in tehnologije Pub Date : 2022-12-08 DOI: 10.17222/mit.2022.641

Ž. Novak, T. Kosec

{"title":"CORROSION AND PROTECTION OF NON-PATINATED, SULPHIDE- AND CHLORIDE-PATINATED BRONZE","authors":"Ž. Novak, T. Kosec","doi":"10.17222/mit.2022.641","DOIUrl":"https://doi.org/10.17222/mit.2022.641","url":null,"abstract":"The surface of bronze undergoes changes when it is exposed to a polluted atmosphere, and bronze should therefore be protected from this natural deterioration. The most common protective coating currently in use is Incralac, which includes toxic components and is reported to dissolve a few months after application. This work therefore investigates a fluoropolymer-based coating (FA-MS), and compares it to the protection offered by Incralac. Bronze samples (non-patinated, sulphide-patinated or chloride-patinated) were exposed to simulated urban rain for four months. The corrosion products formed were characterised using SEM/EDS and Raman analyses. To study the protection efficiency of the newly developed fluoropolymer coating (FA-MS) and Incralac protection, various electrochemical methods were used: measurements of open circuit potential linear polarisation and potentiodynamic measurements. Findings show that the FA-MS coating provides a protection efficiency of 71 % for chloride-patinated bronze and 99.5 % for sulphide-patinated bronze. Contact angles of the FA-MS samples were higher than those of the unprotected samples or the samples protected by Incralac, indicating better hydrophobic properties of the FA-MS coating.","PeriodicalId":18258,"journal":{"name":"Materiali in tehnologije","volume":"56 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78740358","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