Science of Sintering最新文献_第6页

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

Investigation of Bi2Te2.88Se0.12 bulk single crystal produced using Bridgman method Bridgman法制备Bi2Te2.88Se0.12块状单晶的研究

4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos231017056p

Emina Pozega, Slavko Bernik, Sasa Marjanovic, Ana Petrovic, Igor Svrkota, Andjela Stojic, Danijela Simonovic

引用次数: 0

The influence of strontium content and sintering temperature on monazite stability 锶含量和烧结温度对独居石稳定性的影响

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos220811024m

M. Mirković, J. Maletaskic, S. Butulija, L. Andjelković, M. Šuljagić

引用次数: 0

Dilatometric and microstructural study of particle and functionally graded composites based on hydroxyapatite and crystalline bioglass 羟基磷灰石与结晶生物玻璃的粒子与功能梯度复合材料的膨胀学与微观结构研究

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos221028017d

D. Drdlík, K. Drdlíková, K. Maca

引用次数: 1

Investigation of wear and microhardness behaviors of AA2196 matrix composite materials reinforced with ceramics produced by powder metallurgy method 粉末冶金法制备陶瓷增强AA2196基复合材料的磨损和显微硬度行为研究

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos230417030f

T. Findik

引用次数: 0

The effect of molten salt on the mechanical properties and microstructure of CuNiSi alloys with reinforced Fe 熔盐对加铁CuNiSi合金力学性能和显微组织的影响

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2023-01-01 DOI: 10.2298/sos230327028a

M. Akkaş

{"title":"The effect of molten salt on the mechanical properties and microstructure of CuNiSi alloys with reinforced Fe","authors":"M. Akkaş","doi":"10.2298/sos230327028a","DOIUrl":"https://doi.org/10.2298/sos230327028a","url":null,"abstract":"In this study, CuNiSi alloys were produced using powder metallurgy in molten salt (KBr). In the Cu, Ni, and Si powder mixture, Fe was added at a rate of 2.5%, 5 and 7.5% and mechanical alloying was carried out for 4 hours at 400 rpm. Prepared powder mixtures were cold pressed under 600 MPa pressure and sintered for 3 hours at 900 ? in an argon atmosphere. Phase formation, microstructure, microhardness, electrical conductivity, and corrosion of the produced samples were analyzed in detail. Scanning electron microscope (SEM) was used to detect the changes in the microstructure of the produced samples, and an X-ray diffractogram (XRD) was used to determine the phases formed in the internal structure of the materials. In order to determine the mechanical properties of the produced samples, hardness analyzes were made with a microhardness measuring device. The electrical conductivity properties of the produced CuNiSi and CuNiSiFe alloys were determined due to the increase in the Fe ratio. Corrosion tests of the produced samples were determined by potentiodynamic polarization curves in a 3.5% NaCl solution. Fe-reinforced CuNiSi composite materials have been successfully produced in molten salt (KBr). CuNiSi alloy, the microstructure is dominated by the typical large and small particles. Fe element is homogeneously dispersed in the CuNiSi alloy instead of being separated using the Ni element. Fe particles have decreased the hardness of produced alloys. The electrical conductivity properties changed with increasing voltages depending on the increase of Fe supplementation, and as a result, the sample containing 7.5% Fe had the best electrical conductivity values. Results showed that by increasing the amount of Fe, the mechanical properties and corrosion resistance increased.","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":"68812004","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

Effect of sintering on the piezoelectric properties and microstructure of lead free (Ba1-xCaxZr0.1Ti0.9O3) (x=0.065) ceramics 烧结对无铅(Ba1-xCaxZr0.1Ti0.9O3) (x=0.065)陶瓷压电性能和微观结构的影响

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2022-01-01 DOI: 10.2298/sos2202201b

Don Biswas, Prolay Sharma, N. Panwar

引用次数: 0

Comparison of alkali modified fly ash and alkali activated fly ash as Zn(II) ions adsorbent from aqueous solution 碱改性粉煤灰与碱活化粉煤灰作为水溶液中Zn(II)离子吸附剂的比较

IF 1.5 4区材料科学

Science of Sintering Pub Date : 2022-01-01 DOI: 10.2298/sos2201049p

A. Purbasari, D. Ariyanti, S. Sumardiono, Muhammad Shofa, Reinhard Manullang

{"title":"Comparison of alkali modified fly ash and alkali activated fly ash as Zn(II) ions adsorbent from aqueous solution","authors":"A. Purbasari, D. Ariyanti, S. Sumardiono, Muhammad Shofa, Reinhard Manullang","doi":"10.2298/sos2201049p","DOIUrl":"https://doi.org/10.2298/sos2201049p","url":null,"abstract":"Fly ash which is solid waste can be used as an adsorbent for wastewater treatment. Alkali modification and alkali activation on fly ash can increase the adsorption capacity of fly ash. In this study, alkali modified fly ash and alkali activated fly ash were used as Zn(II) ions adsorbents. The effect of adsorption time and initial concentration of Zn(II) ions was studied, as well as the kinetics and isotherm adsorption. The results showed that the removal efficiency of Zn(II) ions by alkali activated fly ash is higher than that by alkali modified fly ash. The adsorptions of Zn(II) ions by alkali modified fly ash and by alkali activated fly ash have reached equilibrium after two hours. The increase of initial concentration of Zn(II) ions would decrease the removal efficiency with both alkali modified fly ash and alkali activated fly ash. Adsorptions of Zn(II) ions by both alkali modified fly ash and alkali activated fly ash tend to follow pseudo second order kinetics model and Langmuir isotherm model with maximum adsorption capacity of 62.696 mg/g and 66.667 mg/g, respectively.","PeriodicalId":21592,"journal":{"name":"Science of Sintering","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68808898","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: 5