Materials Science最新文献

{"title":"Preparation and Performance Analysis of New Multi stage Porous Carbon Materials for Air Pollution Treatmentials on Atmospheric Pollution Sources under the Background of Carbon Peak and Carbon Neutrality","authors":"Pingli Zhang, Zhengyu Yang, Baosheng Mu, Jingjing Huang, Qianqian Ma, Hongchao Li, Jia Jia","doi":"10.5755/j02.ms.36786","DOIUrl":"https://doi.org/10.5755/j02.ms.36786","url":null,"abstract":"The adsorption of toxic and harmful gases through porous materials is an effective means of air pollution control. A multi-level porous carbon material with ultra-high-specific surface area was made based on rice husk biomass to improve the air pollution controlling efficiency and reduce its cost. The rice husk substrate was pretreated using T.viride spore suspension during the preparation of this material. This changes the proportion of various components in the matrix, thereby achieving an increase in the multi-level porous carbon material’s specific surface area. Its performance was analyzed through various means in the study. The results confirmed that when the activation treatment time was 60 minutes, the porous carbon material’s specific surface area was the highest, reaching 3714 m2/g. After 30 days of treatment with T.viride spore suspension, the cellulose content in rice husks decreased by about 40 g/kg. Compared to untreated porous carbon materials, after 20 days of treatment, the micropores and mesopores of these materials significantly increased. The research has successfully increased the multi-level porous carbon material’s specific surface area and achieved rapid absorption of atmospheric volatile organic compounds. The multi-level porous carbon material can enhance the air pollution controlling efficiency and reduce its cost.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141663955","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}

{"title":"Mechanical Properties and Durability of Steel Slag-mineral Powder-coal Gangue Mixture by Uniform Design for Pavement Base","authors":"Fengge Chen, Wenqing Meng, Bingyang Deng, Xin Liu, Hanlong Cui, Shenglei Feng, Yapeng Zhang, Yitong Wu","doi":"10.5755/j02.ms.35705","DOIUrl":"https://doi.org/10.5755/j02.ms.35705","url":null,"abstract":"To realize the utilization of industrial solid waste resources and solve the shortage problem of pavement materials, this paper uses steel slag, mineral powder, and coal gangue to prepare a mixture. A uniform test with 2 factors and 6 levels was designed. Through regression analysis, response surfaces were established to study the mechanical properties of the coal gangue mixture. The hydrated products at different ages were microscopically analyzed by XRD and SEM. The durability including freeze-thaw cycles, dry and wet cycles, and immersion expansion rate were researched. The results show that the 7d unconfined compressive strength of the mixture reaches 2.14 – 6.46 MPa, with a 180d resilience modulus of 954 – 1098 MPa, and a 180d splitting tensile strength of 0.66 – 0.83 MPa. With the increase of steel slag content, the 7d unconfined compressive strength of the mixture first decreases and then increases. The content of mineral powder is positively correlated with the 7d unconfined compressive strength. The 180d compressive resilience modulus decreases first and then increases with the increase of steel slag and mineral powder content. The 180d splitting tensile strength is positively correlated with the content of steel slag and mineral powder. The mixture is less affected by freeze-thaw cycles, with mass loss rates of only 1.77 % – 2.13 %. The mass loss rate of the admixture is 0.87 % – 0.99 % after 10 dry and wet cycles, and the strength is slightly improved. The maximum expansion rate of the mixtures immersed in water for 10d is only 0.28 %. The hydrated reaction between steel slag, mineral powder and coal gangue promotes the formation of more hydration products such as AFt, C-S-H, CaAl2(SiO4), and Ca(OH)2. The C-S-H and CaAl2(SiO4) are intertwined into a dense network to wrap Ca(OH)2, which improves the compactness of the mixture and effectively resists the freeze-thaw expansion stress. The steel slag-mineral powder-coal gangue mixture meets the requirements of relevant norms and can be well used in pavement bases.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141669801","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}

{"title":"Study on Effects of Cooling Process on Mechanical and Tribological Properties of Melt-casting Copper-Steel Bimetallic Composites","authors":"Xiaoliang Fang, Yanguo Yin, Shan Huang, Ming Xu, Jilin Miao, Rongrong Li","doi":"10.5755/j02.ms.36016","DOIUrl":"https://doi.org/10.5755/j02.ms.36016","url":null,"abstract":"The ZCuPb15Sn5/1045 bimetallic composites were prepared by the melt-casting composite method. The mechanical and tribological properties of the copper-steel bimetallic composites under different cooling process conditions were studied. The results showed that with the acceleration of the cooling rate, the copper layer of the copper-steel bimetallic composite became harder, the grain became finer, and the distribution of the anti-friction element Pb became more uniform. Underwater cooling conditions, the shear strength increased, and the shear fracture gradually showed the tendency of tough and brittle fracture. The cooling process had a more significant influence on the tribological properties of the material. When the cooling rate was slow, the copper layer of the bimetallic composites had a high friction coefficient and relatively serious adhesive wear and oxidation wear. For the water cooling sample with a very fast cooling rate, the friction coefficient of the copper layer was low and the wear degree was relatively light.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141678670","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}

{"title":"Charge/discharge Profiling of Organic Latent Heat Material Embedded in Polymer Matrix for Heat Energy System","authors":"Reza Abdu Rahman, Sulistyo Sulistyo, Mohamad Said Kartono Tony Suryo Utomo, Ilham Febriansyah, Ismail Ismail","doi":"10.5755/j02.ms.36328","DOIUrl":"https://doi.org/10.5755/j02.ms.36328","url":null,"abstract":"The operational aspect of a latent thermal energy storage (LTES) system is highly dependent on the performance of its latent heat storage material (LHSM). In this work, performance evaluation of the LHSM is conducted using low-density polyethylene (LDPE) and linear LDPE. As an initial assessment, three different organic LHSMs are used for the evaluation. The thermal assessment indicates that the heat of fusion for the LHSM varies between 142.45 J/g and 198.8 J/g. Thermal decomposition demonstrates that the LHSM is suitable for operating a thermal power system under 100 °C. The addition of polymer clearly influences the charge/discharge rate for each LHSM. For example, it has a positive influence on paraffin wax, which increases the charge rate up to 54.4 %. A positive outcome is also observed for palmitic acid, which has the highest charge rate at around 4.4 °C/min. Interestingly, the charge/discharge rate for stearic acid is decreased by the presence of a polymer. It implies that the melting/solidification rate can be decreased, which may be advantageous for passive thermal systems. In general, the addition of LDPE/LLDPE alters the performance of LHSM. It makes the polymer suitable to be taken as a stabilizer for the LHSM.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141692870","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}

{"title":"Preparation and Properties of Stearic Acid/Nanocellulose Composite Phase Change Energy Storage Materials","authors":"Yufeng Zhao, Yang Chen","doi":"10.5755/j02.ms.36560","DOIUrl":"https://doi.org/10.5755/j02.ms.36560","url":null,"abstract":"To solve the problems of liquid phase leakage and poor thermal conductivity of organic phase change energy storage materials, a novel composite phase change energy storage material (SA/CNF) based on stearic acid (SA) and nanocellulose (CNF) was prepared in this study and added graphene to enhance its thermal conductivity. For the prepared composite phase change materials (SFs) with different ratios, shape stability, and testing experiments showed that the maximum adsorption rate of CNF on SA reached 80 %. The properties of SA/CNF were then characterized by various instruments. The results show that SA and CNF are compounded together by physical interaction. More than 93 % of SA in the composite phase change energy storage material SA/CNF is able to store and release heat through the phase change process, and the latent heat of phase change of pure SA is 206.3 J/g, while the latent heat of phase change of the composite phase change material SA/CNF with 20 % of CNF is 156.2 J/g, and they both have good cycling stability. The addition of graphene enhances the thermal conductivity of SA/CNF to a large extent, and the thermal conductivity at a graphene ratio of 5 % is 261 % higher than that of SA/CNF without graphene. SA/CNF is an environmentally friendly energy storage material with very high application prospects.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141709221","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}

{"title":"Determination of the Residual Life of a Plate with a System of Cracks Under the Action of Long-Term Static Load and Corrosive Environment","authors":"O. Ye. Andreikiv, I. Ya. Dolinska, N. S. Zviahin, M. O. Liubchak","doi":"10.1007/s11003-024-00823-5","DOIUrl":"https://doi.org/10.1007/s11003-024-00823-5","url":null,"abstract":"<p>Using the energy approach, a calculation model was built to determine the period of subcritical growth of a system of cracks in metal plates, subjected to long-term static tension and local electrochemical corrosion. The effect of a corrosive environment on the residual life of a plate with a system of periodic and doubly periodic cracks was evaluated.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508768","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}

{"title":"The Influence of Inclusions on Mechanical Characteristics of Structural-Heterogeneous Materials (A review)","authors":"V. P. Sylovanyuk, N. A. Ivantyshyn","doi":"10.1007/s11003-024-00813-7","DOIUrl":"https://doi.org/10.1007/s11003-024-00813-7","url":null,"abstract":"<p>A brief overview of studies on the influence of inclusions on the mechanical properties of structural materials was performed. The studies, where analytical dependences were obtained for predicting the mechanical properties of structurally heterogeneous materials (ultimate strength, fatigue limit, and crack growth resistance) depending on the shape, volume content, and size of inclusions, were mentioned.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508769","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}

{"title":"Degradation of Reinforced Concrete Construction of Bridge Structures: Corrosion Aspect","authors":"T. O. Nenastina, K. V. Berezhna, M. D. Sakhnenko, S. O. Buhaievskyi","doi":"10.1007/s11003-024-00809-3","DOIUrl":"https://doi.org/10.1007/s11003-024-00809-3","url":null,"abstract":"<p>Factors, which cause fracture of reinforced concrete constructions of bridge structures were considered. One of them is anti-icing material used for road safety in the winter period. The Ukrainian market of anti-icing chemical reagents and combined agents of natural and industrial origin was analyzed. The kinetics of corrosion fracture of 09G2S and St3 steels as the main material of reinforcement in neutral chloride-containing and alkaline solutions was investigated using the method of polarization resistance. Taking into account the kinetics of corrosion fracture of the studied steels, the rate of their general corrosion was calculated.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141508771","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}

{"title":"Mechanical and Corrosion Properties of Fe–B–C Alloys","authors":"O. V. Sukhova","doi":"10.1007/s11003-024-00811-9","DOIUrl":"https://doi.org/10.1007/s11003-024-00811-9","url":null,"abstract":"<p>Mechanical and corrosion properties of Fe–B–C alloys (0.1–9 wt% B; 0.2–4 wt% C; Fe is balance) were investigated. Microhardness and compressive strength, resistance to abrasive, and gas-abrasive wear of the alloys were determined at room temperature. The corrosion rate was measured by gravimetric method in the following aqueous solutions: 0.5 M H₂SO₄ , 5 M H₃PO₄ , 0.8 M HNO₃ , 1 M HCl , 2 M CH₃COOH , 3 M NaCl, and 0.2 M Na₂SO₄ . The highest resistance to abrasive wear is shown by Fe–B–C alloys with high hardness and the highest resistance to gas-abrasive wear – by the alloys with high compressive strength. In a majority of the acidic and neutral media, the corrosion rate of Fe–B–C alloys decreased with increasing time due to the accumulation of corrosion products on the surface of the samples. The corrosion rate increased with an increase in the volume fractions of eutectic and austenite phases in the eutectic colonies or when interfaces between the primary and peritectic phases were formed in the structure. The Fe–B–C alloys demonstrated the highest corrosion resistance in the sodium chloride solution and the lowest one in the nitric acidic solution.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141512788","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}

{"title":"Calculation of Fuel Rod Strength Under Steady-State Operating Condition","authors":"S. S. Lys","doi":"10.1007/s11003-024-00814-6","DOIUrl":"https://doi.org/10.1007/s11003-024-00814-6","url":null,"abstract":"<p>The results of thermal calculations of the part of the fuel assembly of the active zone of the VVER-1000 reactor in the stationary mode of operation make it possible to evaluate the mechanical state of the fuel rod cladding, to understand the influence of reactor control methods on the strength and the design acceptance criteria. The main principles of the evaluation of mechanical characteristics of VVER-1000 fuel rods using the START-3 code are presented. The results of the prediction of the mechanical characteristics of the VVER-1000 fuel rods during the 4-year cycle in stationary mode under normal operating conditions and under their violation are illustrated. The maximum values of stress in the fuel rod in the stationary mode of operation are in the range of 60–80 MPa, which cannot cause depressurization of the fuel rod.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141530480","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}