Science of Sintering最新文献_第5页

Application of artificial neural networks in performance prediction of cement mortars with various mineral additives 人工神经网络在不同矿物添加剂水泥砂浆性能预测中的应用

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos2301011t

A. Terzic, Milada L. Pezo, L. Pezo

{"title":"Application of artificial neural networks in performance prediction of cement mortars with various mineral additives","authors":"A. Terzic, Milada L. Pezo, L. Pezo","doi":"10.2298/sos2301011t","DOIUrl":"https://doi.org/10.2298/sos2301011t","url":null,"abstract":"The machine learning technique for prediction and optimization of building material performances became an essential feature in the contemporary civil engineering. The Artificial Neural Network (ANN) prognosis of mortar behavior was conducted in this study. The model appraised the design and characteristics of seventeen either building or high-temperature mortars. Seven different cement types were employed. Seventeen mineral additives of primary and secondary origin were embedded in the mortar mixtures. Cluster Analysis and Principal Component Analysis designated groups of similar mortars assigning them a specific purpose based on monitored characteristics. ANN foresaw the quality of designed mortars. The impact of implemented raw materials on the mortar quality was assessed and evaluated. ANN outputs highlighted the high suitability level of anticipation, i.e., 0.999 during the training period, which is regarded appropriate enough to correctly predict the observed outputs in a wide range of processing parameters. Due to the high predictive accuracy, ANN can replace or be used in combination with standard destructive tests thereby saving the construction industry time, resources, and capital. Good performances of altered cement mortars are positive sign for widening of economical mineral additives application in building materials and making progress towards achieved carbon neutrality by reducing its emission.","PeriodicalId":21592,"journal":{"name":"Science of Sintering","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68811406","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

Influence of rare earth oxide and graphite on the mechanical and tribological properties of Fe/Cu based sintered friction materials 稀土氧化物和石墨对Fe/Cu基烧结摩擦材料力学和摩擦学性能的影响

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos230306034r

K. Rajesh Kannan, R. Vaira Vignesh, M. Govindaraju, P. S. Samuel Ratna Kumar

{"title":"Influence of rare earth oxide and graphite on the mechanical and tribological properties of Fe/Cu based sintered friction materials","authors":"K. Rajesh Kannan, R. Vaira Vignesh, M. Govindaraju, P. S. Samuel Ratna Kumar","doi":"10.2298/sos230306034r","DOIUrl":"https://doi.org/10.2298/sos230306034r","url":null,"abstract":"Fe/Cu-based sintered friction materials are proven potential materials for heavy-duty applications. The current research explores the influence of rare earth oxide (Nd2O3) and graphite on the tribological characteristics of Fe/Cu-based friction materials. The constituents present in the friction material are Fe, Cu, Cg (1%, 3%, 5%, 7%), BaSO4, and Nd2O3 (5%). Optical microscopy and elemental mapping studies reveal the homogeneous distribution of elements in the matrix. Sintered density of the specimens showed a maximum of 70% of the theoretical density measured by Archimedes' principle. XRD analysis shows no new phase formation in all the sintered specimens. A peak microhardness result of 96 HV is obtained in specimen NG-01. The pin-on-disc tribotests are performed at an axial load of 50 N at a sliding velocity of 5.5 m/s. Specimen NG-03 with 3% graphite exhibited an optimum wear rate with a friction coefficient of 0.45. The surface morphology and elemental composition of the worn specimens are investigated. The morphological features inferred that the wear mechanism is predominantly mixed abrasive and adhesive.","PeriodicalId":21592,"journal":{"name":"Science of Sintering","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68811554","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

Characterization of cobalt ferrite nanoparticles obtained by various synthesis methods and comparison with the Raman spectra of other ferrites and some cubic oxide spinels 对不同合成方法制备的钴铁氧体纳米颗粒进行了表征，并与其他铁氧体和一些立方氧化尖晶石的拉曼光谱进行了比较

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos230322035l

Z. Lazarević, A. Milutinović, L. Andjelković, M. Petrović, B. Hadžić, M. Romčević, J. Trajic, N. Romčević

{"title":"Characterization of cobalt ferrite nanoparticles obtained by various synthesis methods and comparison with the Raman spectra of other ferrites and some cubic oxide spinels","authors":"Z. Lazarević, A. Milutinović, L. Andjelković, M. Petrović, B. Hadžić, M. Romčević, J. Trajic, N. Romčević","doi":"10.2298/sos230322035l","DOIUrl":"https://doi.org/10.2298/sos230322035l","url":null,"abstract":"Single phase cobalt ferrite (CoFe2O4) with nanoparticles of similar sizes (15.7-19 nm) was obtained by different synthesis methods: coprecipitation, ultrasonically assisted coprecipitation, coprecipitation followed by mechanochemical treatment, microemulsion and microwave assisted hydrothermal synthesis. The obtained CoFe2O4 samples have been studied using a variety of characterization techniques: X-ray diffraction (XRD), Raman spectroscopy, far infrared (FIR) reflectivity and attenuated total reflectance (ATR) in combination with Fourier-transform infrared (FTIR) spectroscopy in mid IR spectra. Different methods of synthesis produced nanoparticles with different lattice constants, internal stresses and different cation inversion values. This is confirmed in the subtle changes in the Raman and IR spectra of different CoFe2O4 nano-powders. The Raman spectra of CoFe2O4 were compared with the spectra of other ferrites and some cubic oxide spinels in an attempt to evaluate the contribution of tetrahedral and octahedral oscillations in certain Raman modes.","PeriodicalId":21592,"journal":{"name":"Science of Sintering","volume":"45 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68811842","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

The influence of printing orientation on the flexural strength of PA 12 specimens produced by SLS 打印方向对SLS法制备pa12试样抗弯强度的影响

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos230508031j

Ivana Jevtic, G. Mladenović, Aleksa Milovanovic, Isaak Trajković, M. Djurkovic, Nenad Korolija, M. Milosevic

引用次数: 0

The effect of aging temperature and aging duration on the dry sliding wear behavior of Ti6Al4V alloy 时效温度和时效时间对Ti6Al4V合金干滑动磨损性能的影响

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos230524033a

S. Aksöz

引用次数: 0

Effect of glass powder on the friction performance of automotive brake lining materials 玻璃粉对汽车制动衬里材料摩擦性能的影响

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos211017006k

Hüsamettin Kuş, D. Altiparmak

引用次数: 0

Cobalt supported chitosan-derived carbon-smectite catalyst in Oxone® induced dye degradation 钴负载壳聚糖衍生的碳蒙脱石催化剂在Oxone®诱导染料降解

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos230427037s

G. Stevanović, N. Jović-Jovičić, A. Popovič, B. Dojčinović, A. Milutinović-Nikolić, P. Banković, M. Ajdukovic

{"title":"Cobalt supported chitosan-derived carbon-smectite catalyst in Oxone® induced dye degradation","authors":"G. Stevanović, N. Jović-Jovičić, A. Popovič, B. Dojčinović, A. Milutinović-Nikolić, P. Banković, M. Ajdukovic","doi":"10.2298/sos230427037s","DOIUrl":"https://doi.org/10.2298/sos230427037s","url":null,"abstract":"Catalytic degradation of tartrazine in the presence of Oxone? activated by a catalyst constituted of cobalt supported on a nanocomposite of smectite with chitosan-derived carbon was investigated. The catalyst was synthesized using cobalt impregnation followed by carbonization at 773 K in an inert atmosphere. The synthesized catalyst was previously fully characterized using appropriate characterization methods, including XRPD, XPS, FTIR, HR-TEM, and low-temperature N2-physisorption analysis. The catalytic experiments were performed by varying different experimental parameters (dye concentration, Oxone? concentration, temperature, and initial pH of the reaction solution). The kinetic and thermodynamic parameters were estimated from the experimental results. The kinetics data showed the best fit with the pseudo-first-order kinetics model. The activation energy of the investigated degradation process was calculated according to the Arrhenius equation. The catalyst showed excellent performance at low temperatures even at 298 K, and in the wide range of pH values.","PeriodicalId":21592,"journal":{"name":"Science of Sintering","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68812413","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

Production of Ni-Co-bronze composites with different tic composition by hot pressing 热压法制备不同tic成分的Ni-Co-bronze复合材料

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos220404007i

A. Imak, M. Kilic, I. Kirik

{"title":"Production of Ni-Co-bronze composites with different tic composition by hot pressing","authors":"A. Imak, M. Kilic, I. Kirik","doi":"10.2298/sos220404007i","DOIUrl":"https://doi.org/10.2298/sos220404007i","url":null,"abstract":"Improving microstructural, mechanical, and thermal properties of Ni-Co-Bronze composites is crucial for various applications. In this study, five Ni-Co-Bronze (CuSn) + XTiC (0, 3, 7, 10, and 15 wt.%) composites were produced by using the hot pressing method. The effect of TiC reinforcement rate on each of their microstructure, wear, hardness, and thermal properties was investigated. Within the scope of microstructure analysis, the scanning electron microscope (SEM), electron dispersive spectrometer (EDS), and XRD analysis were employed. Thermal analyses were carried out for thermal differences between the samples. Furthermore, microhardness, impact, and wear tests were run to estimate mechanical behaviors of Ni-Co Bronze + XTiC composite. Experimental results indicated that TiC rate had an important effect on the microstructure, wear-resistance and microhardness of Ni-Co bronze composite. As the TiC reinforcement rate increased, the hardness of Ni-Co Bronze + XTiC composites varied between 180 HV and 450 HV. Consequently, microstructure analysis revealed that there was a serious interaction between reinforcement and matrix. Wear resistance increased with a TiC (7-10) wt. % rate but decreased at high TiC rates. It was clearly seen that the wear pattern was both oxidative and abrasive.","PeriodicalId":21592,"journal":{"name":"Science of Sintering","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68809488","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

The influence of sintering condition on microstructure, phase composition, and electrochemical performance of the scandia-ceria-Co-doped zirconia for SOFCs 烧结条件对钪-铈-共掺杂氧化锆sofc微观结构、相组成及电化学性能的影响

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos220805009e

P. Elahi, Elizabeth Winterholler, Jude A. Horsley, Taylor D. Sparks

{"title":"The influence of sintering condition on microstructure, phase composition, and electrochemical performance of the scandia-ceria-Co-doped zirconia for SOFCs","authors":"P. Elahi, Elizabeth Winterholler, Jude A. Horsley, Taylor D. Sparks","doi":"10.2298/sos220805009e","DOIUrl":"https://doi.org/10.2298/sos220805009e","url":null,"abstract":"Samples of 6 mol%Sc2O3 ? 1 mol% CeO2 co ? doped ZrO2 were fabricated by conventional ceramic processing methods and sintered at various temperatures from 1000?C to 1650?C in air. The sintering conditions on microstructure and phase content are investigated using various characterization methods, including pycnometry, diffraction, and spectroscopy. The electrical conductivity of samples was investigated using electrochemical impedance spectroscopy (EIS). The effect of inductive load (measured from room temperature to 800?C) is discussed in low to high temperature regimes. At T < 400?C since the arc is not a complete semicircle, the high-frequency arc could be fit using a constant phase element (CPE), while by subtraction of inductive load, a good fit is achieved using a capacitor element instead of CPE. The Arrhenius conductivity plot of samples reveals that the specimen sintered at 1600?C for 6 hours exhibits the highest conductivity. The activation energy (Ea) and conductivity pre-exponential (??0) factor are calculated from a linear fit to data that decreases by the increase in sintering temperature.","PeriodicalId":21592,"journal":{"name":"Science of Sintering","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68811006","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

Influence of raster angle on tensile properties of FDM additively manufactured plates made from carbon reinforced PET-G material 栅格角度对碳增强PET-G材料FDM增材制造板拉伸性能的影响

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos220916010e

A. Elayeb, Milovan R. Janković, Stefan Dikic, D. Bekric, I. Balać

{"title":"Influence of raster angle on tensile properties of FDM additively manufactured plates made from carbon reinforced PET-G material","authors":"A. Elayeb, Milovan R. Janković, Stefan Dikic, D. Bekric, I. Balać","doi":"10.2298/sos220916010e","DOIUrl":"https://doi.org/10.2298/sos220916010e","url":null,"abstract":"Tensile properties of thin plate specimens made from short carbon fiber reinforced PET-G material are experimentally evaluated for various raster angles (printing directions). In additive manufacturing (AM), raster angle is recognized as one of the key printing parameters which strongly influences the strength and stiffness of the final part. The relatively high average value of ultimate tensile strength was obtained for specimens printed with the 0? raster angle, compared to the value obtained for specimens printed with the 90? raster angle - 52.2 MPa and 25.4 MPa, respectively. Similarly, noticeably higher average value of modulus of elasticity was obtained for specimens printed with the 0? raster angle, compared to the value obtained for specimens printed with the 90? raster angle - 4752 MPa and 1569 MPa, respectively. Scanning electron microscopy (SEM) was used for analysis of specimens? fracture surfaces. SEM images revealed considerable volume fraction of voids (porosity). ?he porosity, together with weak bonding between two adjacent rasters, could be one of key factors for poor tensile properties of samples printed with rasters perpendicular to direction of load application (90? raster angle).","PeriodicalId":21592,"journal":{"name":"Science of Sintering","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68811147","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