Materialwissenschaft und Werkstofftechnik最新文献_第2页

Use of hydroxyethyl cellulose in the preparation of thermoplastic blends with polycaprolactone Verwendung von Hydroxyethylcellulose bei der Herstellung thermoplastischer Mischungen mit Polycaprolacton 使用羟乙基纤维素制备含有聚己内酰胺的热塑性混合物

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-05-21 DOI: 10.1002/mawe.202400363

P. Skalková, I. Labaj, Z. Mičicová, S. Božeková, R. Janík, E. Benčíková, E. Nekorancová

{"title":"Use of hydroxyethyl cellulose in the preparation of thermoplastic blends with polycaprolactone\u0000 Verwendung von Hydroxyethylcellulose bei der Herstellung thermoplastischer Mischungen mit Polycaprolacton","authors":"P. Skalková, I. Labaj, Z. Mičicová, S. Božeková, R. Janík, E. Benčíková, E. Nekorancová","doi":"10.1002/mawe.202400363","DOIUrl":"https://doi.org/10.1002/mawe.202400363","url":null,"abstract":"The work studies the interactions between polycaprolactone and hydroxyethyl cellulose in the blends with regard to the technology of preparation of the given material (twin-screw extruder), the effect of the compatibilizer ethylene-co-acrylic acid and the effect of the plasticizer (glycerin). The amounts of filler, hydroxyethyl cellulose mixed into the polycaprolactone were 0 wt.–% to 50 wt.–%. Opaque foils were prepared. The aim of the work is to prepare a material with satisfactory physico-mechanical properties for packaging materials using hydroxyethyl cellulose and semi-synthetic polymer from renewable sources. The effect of ethylene-co-acrylic acid compatibilizer and hydroxyethyl cellulose plasticization on morphology, mechanical properties (tensile strength, elongation of break, Young's modulus) and thermal properties are studied for the prepared blends. It is important to determine the optimal amount of glycerin for hydroxyethyl cellulose, as lower glycerin content may lead to a reduction in the mechanical properties of the blends.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 5","pages":"654-665"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144214224","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

Evaluation of the possibility of preparing geopolymer materials based on slags and fly ashes from the thermal treatment of municipal waste Bewertung der Möglichkeit der Herstellung geopolymerer Werkstoffe auf Grundlage von Schlacken und Flugaschen aus der thermischen Behandlung kommunaler Abfälle 评估以城市废物热处理产生的矿渣和飞灰为基础制备地聚合物材料的可能性评估以城市废物热处理产生的矿渣和飞灰为基础生产地聚合物材料的可能性

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-05-21 DOI: 10.1002/mawe.202400387

W. Gastoł, V. A. Shalomieiev, G. V. Tabunschyk, M. Łach, B. Kozub, M. Nykiel, K. Korniejenko

{"title":"Evaluation of the possibility of preparing geopolymer materials based on slags and fly ashes from the thermal treatment of municipal waste\u0000 Bewertung der Möglichkeit der Herstellung geopolymerer Werkstoffe auf Grundlage von Schlacken und Flugaschen aus der thermischen Behandlung kommunaler Abfälle","authors":"W. Gastoł, V. A. Shalomieiev, G. V. Tabunschyk, M. Łach, B. Kozub, M. Nykiel, K. Korniejenko","doi":"10.1002/mawe.202400387","DOIUrl":"https://doi.org/10.1002/mawe.202400387","url":null,"abstract":"The main motivation for this research work was the need to find new ways of managing process byproducts of combustion in a way that is safe for the environment and human health. The paper presents research confirming the applicability of the geopolymerization process to stabilize slags and ashes from municipal waste incineration plants. The article aims to assess the possibility of preparing geopolymer materials based on slags and ashes from the process of thermal transformation of municipal waste. The first stage of the work was the characterization of the raw materials used for research using microstructural tests (scanning electron microscopy, x-ray fluorescence and x-ray diffraction). The next stage was the synthesis of the geopolymer material based on the above-mentioned byproducts of the combustion process, including obtaining appropriate samples i. e., beams and cubes. The initial stage of work indicated the need to combine geopolymer materials with the content of slag and fly ash of post-process origin after the thermal transformation of municipal waste, mixed with another additive to improve the cohesion of the material. For this purpose, another product, which came from thermal transformation processes, was used - fly ash from the coal-fired power plant. Then, selected physical and mechanical properties of the prepared materials were determined, including: density, compression and bending tests and water absorption. The microstructure of the obtained materials was also characterized. The obtained results were assessed in terms of the possibilities of using new materials in the construction industry.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 5","pages":"757-769"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144214226","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 Galfan coating on tensile properties, microstructure and dislocation densities of CRS 1018 steel Einfluss der Galfan-Beschichtung auf die Zugfestigkeitseigenschaften, das Gefüge und die Versetzungsdichte von CRS 1018-Stahl Galfan涂层对CRS 1018钢的拉伸性能、微观结构和错位密度的影响

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-05-21 DOI: 10.1002/mawe.202400358

A. Hu, X. Wei, W. Shen, H. Hu, X. Nie

{"title":"Influence of Galfan coating on tensile properties, microstructure and dislocation densities of CRS 1018 steel\u0000 Einfluss der Galfan-Beschichtung auf die Zugfestigkeitseigenschaften, das Gefüge und die Versetzungsdichte von CRS 1018-Stahl","authors":"A. Hu, X. Wei, W. Shen, H. Hu, X. Nie","doi":"10.1002/mawe.202400358","DOIUrl":"https://doi.org/10.1002/mawe.202400358","url":null,"abstract":"In the present work, zinc-6 % aluminium alloy, Galfan, is coated through the hot dipping technique on tensile bars made from cold rolled CRS 1018 steel to study the influence of Galfan coating on tensile properties of mild steel. The tensile results indicate that Galfan coating prepared by the hot dipping process reduces the ultimate tensile strength and yield strength of the substrate, whereas the elongation at failure is significantly increased. The microstructure of the as-rolled, hot-dipping coated, and other comparing specimens is observed by optical microscopy. Nano indentation is used to evaluate the variation of dislocation densities in the tested specimens. The analyses of the hardness-depth curves obtained from the nano indentation testing implies that the dislocation density of the coated steel might be lower than that of the uncoated specimen. The thermal energy received by the steel substrate during the heating stage of the hot-dipping process should be responsible for the recovery of the substrate, which leads to the reduction in dislocation densities and the arrangement of the dislocations into lower-energy configurations. As a result, the Galfan coating increases the elongation at failure considerably with a moderate decrease in strengths.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 5","pages":"705-714"},"PeriodicalIF":1.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144214223","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 chromium addition on mechanical behaviour of Cu-Cr alloy for spot welding applications Einfluss der Chromzugabe auf das mechanische Verhalten einer Kupfer-Chrom-Legierung bei Punktschweißanwendungen 在点焊应用中添加铬对铜铬合金机械行为的影响

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-05-21 DOI: 10.1002/mawe.202400353

M. M. El-Sayed, A. Y. Shash, N. M. Abd Eltawab, M. A. Essam

引用次数: 0

Influence of the manufacturing process on the fatigue strength of threads Einfluss des Herstellungsprozesses auf die Dauerfestigkeit von Gewinden 制造工艺对赫斯特隆工艺螺纹疲劳强度的影响

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-05-13 DOI: 10.1002/mawe.202500001

P. du Maire, J. Hoffmeister, M. Johlitz, A. Öchsner

引用次数: 0

The need for new infills in the application of 3D printing in the maritime sector Bedarf an neuen Füllmaterialien bei der Anwendung des 3D-Drucks im maritimen Sektor 3D打印在海事部门的应用需要新的填充物3D打印在海事部门的应用需要新的填充物

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-05-12 DOI: 10.1002/mawe.202400359

I. Vujović, J. Šoda, M. Miličević

引用次数: 0

Influence of lithium oxalate doping on the calcination strength of rutile titanium dioxide 草酸锂掺杂对金红石型二氧化钛煅烧强度的影响

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-29 DOI: 10.1002/mawe.202400089

J. X. Zou, T. T. Liao, Y. Q. Ren, D. Guo, Q. L. Zou

{"title":"Influence of lithium oxalate doping on the calcination strength of rutile titanium dioxide","authors":"J. X. Zou, T. T. Liao, Y. Q. Ren, D. Guo, Q. L. Zou","doi":"10.1002/mawe.202400089","DOIUrl":"https://doi.org/10.1002/mawe.202400089","url":null,"abstract":"Rutile titanium dioxide has stronger density and weather resistance than anatase titanium dioxide, the overall performance is better, but the required calcination intensity is also higher. In order to reduce calcination temperature and calcination time, lithium oxalate doped metatitanic acid was used to prepare rutile titanium dioxide. Adding 0 %, 0.15 %, 0.3 %, 0.45 %, 0.6 %, 0.75 %, 0.9 % and 1.05 % lithium oxalate (calculated as lithia) to metatitanic acid (calculated as titanium dioxide) containing 0.10 % phosphorus pentoxide, 0.20 % potassium oxide and 0.2 % calcined crystal seed respectively, calcined at 800 °C, 850 °C, 875 °C and 900 °C respectively. The results show that when the doping amount of lithia is 0.3 %, the maximum temperature is 800 °C, and the calcination time is 9 h, the rutile crystal style content in titanium dioxide products can reach 99.6 %, the grain size and particle morphology meet the performance requirements of titanium dioxide (R), and the calcination strength is significantly lower than that of industrial production above 1000 °C and 10 h to 12 h calcination time. Remarkable results have been achieved in energy saving and product quality. In addition, the hypothesis that the A−R phase transition is caused by the increase of mixing entropy of titanium dioxide system is used to explain the phenomenon that lithium ions effectively promote the phase transition of rutile.","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"56 4","pages":"495-502"},"PeriodicalIF":1.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888813","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

Cover Picture: (Materialwiss. Werkstofftech. 4/2025) 封面图片：(Materialwiss。Werkstofftech . 4/2025)

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-29 DOI: 10.1002/mawe.202580401

引用次数: 0

Impressum: Materialwiss. Werkstofftech. 4/2025 刊头:Materialwiss .Werkstofftech . 4/2025

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-29 DOI: 10.1002/mawe.202580421

引用次数: 0

Materialwiss. Werkstofftech. 4/2025 Materialwiss .Werkstofftech . 4/2025

IF 1.2 4区材料科学

Materialwissenschaft und Werkstofftechnik Pub Date : 2025-04-29 DOI: 10.1002/mawe.202580411

引用次数: 0