Materials Science最新文献_第5页

The Influence of Liquid Bridges on Body Contact with a Hydrophobic Periodically Textured Rigid Base 液桥对人体与疏水性周期纹理刚性底座接触的影响

IF 0.9 4区材料科学

Materials Science Pub Date : 2024-06-15 DOI: 10.1007/s11003-024-00816-4

O. Kozachok

引用次数: 0

Preparation of Electrochemical Ni–Mo Coatings from Self-Regulating Electrolytes 利用自调节电解质制备电化学镍钼涂层

IF 0.9 4区材料科学

Materials Science Pub Date : 2024-06-15 DOI: 10.1007/s11003-024-00812-8

S. Halaichak, V. A. Vynar, B. Datsko, M. V. Danylchuk

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Induction Zone Sintering of WC–8Co Hard Alloy 感应区烧结 WC-8Co 硬质合金

IF 0.9 4区材料科学

Materials Science Pub Date : 2024-06-15 DOI: 10.1007/s11003-024-00821-7

S. Teslia, O. S. Kucher, I. I. Bogomol, P. I. Loboda, I. V. Solodkyi

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Effect of Co-addition of Sn, Traces of RE and Ca on the Mechanical and Micro Structural Properties of As-cast AZ80 Alloy 锡、微量 RE 和 Ca 的共同添加对砷铸造 AZ80 合金的机械和微观结构特性的影响

IF 0.9 4区材料科学

Materials Science Pub Date : 2024-06-05 DOI: 10.5755/j02.ms.35474

Madhusudhanprasad Manchala, Ramachandra Raju Vegesna

引用次数: 0

Preparation and Performance Study of Fe2O3/Geopolymer Porous Ceramics Fe2O3/Geopolymer 多孔陶瓷的制备与性能研究

IF 0.9 4区材料科学

Materials Science Pub Date : 2024-05-22 DOI: 10.5755/j02.ms.35956

Zhenfan Chen, Shaofeng Zhu, Qingqing Wang

{"title":"Preparation and Performance Study of Fe2O3/Geopolymer Porous Ceramics","authors":"Zhenfan Chen, Shaofeng Zhu, Qingqing Wang","doi":"10.5755/j02.ms.35956","DOIUrl":"https://doi.org/10.5755/j02.ms.35956","url":null,"abstract":"In this paper, a kind of geopolymer porous ceramic was prepared using the physical foaming method combined with the gel casting process. The effect of sintering temperature on phase composition and physical properties of samples was studied. Fe2O3/geopolymer porous ceramic samples were prepared by Fe2O3 loaded on the surface of geopolymer porous ceramic samples through the impregnation-calcination method. The Fe2O3-loaded geopolymer porous ceramic samples were characterized by SEM-EDS, FTIR, and XPS. The adsorption experiments were employed to investigate the effect of testing conditions on the adsorption of Pb(Ⅱ) from the Pb(NO3)2 solution. The results show that the porosity of geopolymer porous ceramic samples decreased while the compressive strength increased, and the proportion of pores with a pore size range of < 0.1 mm and 0.1 mm – 0.2 mm increased. The adsorption capacity and removal rate of Pb(II) first increased and then decreased with the increase of Fe(NO3)3 solution concentration, calcination temperature, and holding time. The adsorption capacity and removal rate of Pb(Ⅱ) increased with the increase of the pH value and the initial Pb(II) concentration of the solution.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141111944","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

Yield Stress and Elongation Prediction and Process Parameter Optimization of Two C-Mn Steel Based on XGBoost and Non-dominated Sorting Genetic Algorithm-IIization of C-Mn steel based on XGBoost algorithm 基于 XGBoost 和非优势排序遗传算法的两种 C-Mn 钢的屈服应力和伸长率预测及工艺参数优化--基于 XGBoost 算法的 C-Mn 钢二级化

IF 0.9 4区材料科学

Materials Science Pub Date : 2024-05-14 DOI: 10.5755/j02.ms.36556

Xu QIN, Xinqian Zhao, Zhaoyang Jin, Qinghang Wang

引用次数: 0

The Nucleated Poly(L-lactic acid): The Role of a Phenylacetic Hydrazide Derivative 有核聚乳酸：苯乙肼衍生物的作用

IF 0.9 4区材料科学

Materials Science Pub Date : 2024-05-08 DOI: 10.5755/j02.ms.36050

Ninghui Tan, Yang Lv, Hao Huang, Lisha Zhao, Yanhua Cai

{"title":"The Nucleated Poly(L-lactic acid): The Role of a Phenylacetic Hydrazide Derivative","authors":"Ninghui Tan, Yang Lv, Hao Huang, Lisha Zhao, Yanhua Cai","doi":"10.5755/j02.ms.36050","DOIUrl":"https://doi.org/10.5755/j02.ms.36050","url":null,"abstract":"The melt-crystallization, cold-crystallization, melting behaviors, thermal stability, and optical properties of poly(L-lactic acid) (PLLA) nucleated by a phenylacetic hydrazide derivative (DAPH) were investigated. The melt-crystallization confirmed DAPH’s heterogeneous nucleation role in improving PLLA’s poor crystallization capability, concurrently DAPH loading, cooling rate and final melting temperature were three key factors affecting PLLA’s melt-crystallization behaviors. The results from cold-crystallization indicated that the addition of DAPH could accelerate PLLA’s cold-crystallization via cold-crystallization peak’s shift toward the lower temperature side as DAPH loading increased. Through analysis of PLLA/DAPH’s multiple melting behaviors after melt-crystallization, it was found that DAPH loading, the previous melt-crystallization and heating rate determined PLLA/DAPH’s melting processes after melt-crystallization; and PLLA/DAPH’s melting processes after isothermal crystallization depended on the previous crystallization temperature. A drop in thermal decomposition temperature for 5 wt.% mass loss suggested that pure PLLA has better thermal stability compared with PLLA/DAPH. Additionally, the introduction of DAPH could not improve PLLA’s transparency, in contrast, the haze of PLLA was increased greatly owing to the existence of DAPH.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140998659","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

Near Dry Powder Mixed Electric Discharge Machining of AA7050 Hybrid Composites Utilizing Composite Tool Materials 利用复合工具材料对 AA7050 混合复合材料进行近干粉混合放电加工

IF 0.9 4区材料科学

Materials Science Pub Date : 2024-05-07 DOI: 10.5755/j02.ms.34795

Poniface JOSE ALOYSIUS, J. J. JEBEEN MOSES, Varghese Thaya Vijumon, Muthu Nadar FELEX XAVIER MUTHU

{"title":"Near Dry Powder Mixed Electric Discharge Machining of AA7050 Hybrid Composites Utilizing Composite Tool Materials","authors":"Poniface JOSE ALOYSIUS, J. J. JEBEEN MOSES, Varghese Thaya Vijumon, Muthu Nadar FELEX XAVIER MUTHU","doi":"10.5755/j02.ms.34795","DOIUrl":"https://doi.org/10.5755/j02.ms.34795","url":null,"abstract":"Electric Discharge Machining (EDM) is a prominent technique for producing components with complex geometry and intricate shapes. However, productivity depends on the selection of optimal input variables. This research investigates EDM and Near-Dry EDM (NDEDM) on AA7050 hybrid composites, exploring the impact of tool materials, Al2O3 powder concentration, and dielectric fluids on Material Removal Rate (MRR) and Surface Roughness (Ra). NDEDM offers a higher MRR due to localized heating and energy concentration, while hydrocarbon oil EDM provides lower Ra due to cooling and lubrication. Tool material properties, thermal conductivity and bonding strength, affect MRR and TWR. Aluminum composite tools via stir casting display a strong bonding interface, leading to efficient energy transfer and higher MRR, while copper composite tools via friction stir processing exhibit weaker bonding, potentially reducing MRR. Hydrocarbon oil significantly lowers TWR due to effective lubrication and cooling, while near dry EDM results in slightly higher TWR. Al2O3 powder enhances MRR, with an optimal concentration of 1 g/l, while higher concentrations hinder MRR. The presence of Al2O3 powder enhanced the surface quality by reducing the size of the recast layers and producing a smoother surface. Globules, craters, microcracks, pock marks and re-casted layers are the noticeable features spotted on the surface. The results were optimized using the TOPSIS optimization technique and process parameters 32 A current, 30 µs Ton, 3 mm gap distance machined under 3 g/l Al2O3 incorporated hydrocarbon oil dielectric medium using copper composites tool proffers optimal machining performance.","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141003088","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

Mechanical Behavior and Durability of Perlite Based Mortar Exposed to Sodium Sulfate Attack 受到硫酸钠侵蚀的珍珠岩砂浆的力学行为和耐久性

IF 0.9 4区材料科学

Materials Science Pub Date : 2024-05-07 DOI: 10.5755/j02.ms.34760

Chaib Ouaddah, Omar Safer, Fodil Dif

{"title":"Mechanical Behavior and Durability of Perlite Based Mortar Exposed to Sodium Sulfate Attack","authors":"Chaib Ouaddah, Omar Safer, Fodil Dif","doi":"10.5755/j02.ms.34760","DOIUrl":"https://doi.org/10.5755/j02.ms.34760","url":null,"abstract":"The objective of this study is to gather additional on the impact of perlite on both the mechanical properties and resistance to chemical attacks of materials. Various combinations ,incorporating perlite in the form of cement additions, were examined. Five different substitution rates of 10 %, 15 %, 20 %, 25 %,and 30 % of cement with powder perlite were utilized for comparison with plain cement. The findings indicate that the interaction between lime,silica,and alumina in powder perlite results in the formation of several hydrates, such as calcium silicate hydrate, hydrated calcium aluminates,and hydrated gelhenite.Our research focuses on the development of natural perlite from maghnia as a potentially pozzolanic supplementary cementing material. In evaluating the pozzolanicity of this material, it was observed that external aggressions, such as chlorides, CO2, and chemical attacks, can compromise the physical and mechanical properties of concrete,affecting its long-term durability. However,natural pozzolans like pelite exhibit a positive influence on the durability of mortars against sulphate attacks. Test results revealed specimens with no apparent degradation, indicating that sulphate ions in the solution did not adversely affect perlite-based mortars. There is a growing preference for mineral additives with lower production costs than cement. Consequently, the optimal mixture was determined to be one containing 25 % perlite. However, cement pastes and mortars incorporating up to 20 % perlite demonstrated satisfactory physical and mechanical properties, comparable to materials without perlite. The investigation into the perlite materials used in conjunction with cement suggests the potential for sustainable concrete. Experimental results indicate that natural perlite powder from Maghnia can be considered a good pozzolanic material, suitable as a mineral admixture in cement production.\u0000 ","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141005474","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

Morphology and Porosity of the Surface of Titanium Alloys After Plasma-Electrolytic Oxidation in An Alkaline Environment with Diatomite 硅藻土在碱性环境中进行等离子电解氧化后钛合金表面的形态和孔隙率

IF 0.9 4区材料科学

Materials Science Pub Date : 2024-04-24 DOI: 10.1007/s11003-024-00797-4

N. Imbirovych, O. I. Zvirko, K. Kurzydłowski

引用次数: 0