Materialwissenschaft und Werkstofftechnik最新文献

{"title":"Characterisation of thin films of titanium dioxide on various metal materials\u0000 Charakterisierung von dünnen Schichten aus Titandioxid auf verschiedenen metallischen Werkstoffen","authors":"J. Šulcová,&nbsp;A. Feriancová,&nbsp;I. Papučová,&nbsp;J. Pagáčová,&nbsp;J. Krmela,&nbsp;A. Nowicka","doi":"10.1002/mawe.70094","DOIUrl":"https://doi.org/10.1002/mawe.70094","url":null,"abstract":"<p>Metal corrosion cannot be completely eliminated, but its intensity can be reduced by selecting appropriate materials, using advanced alloys, or applying protective thin films and coatings, especially in aggressive environments. In this study, thin films of titanium dioxide were deposited on metal materials (aluminium sheet, stainless steel and galvanized sheet) by the dip-coating technique. A highly stable titanium dioxide sol was synthesised using titanium dioxide isopropoxide as a precursor, isopropyl alcohol as a solvent, acetic acid as a catalyst, and acetylacetone as a chelating agent. The morphology and topography of the surface of metal materials with and without titanium dioxide thin films were characterised using atomic force microscopy and confocal microscopy. Surface properties and the effect of ageing were evaluated by measuring contact angles and calculating the surface free energy, including its polar and dispersion components. The adhesion of thin films of titanium dioxide was evaluated using scratch testing, and energy-dispersive X-ray analysis was performed to determine the chemical composition of the deposited thin films. On the basis of the obtained results, it is hypothesised that the corrosion resistance of metal materials can be increased by thin films of titanium dioxide deposited on them.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 6","pages":"586-593"},"PeriodicalIF":1.0,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615242","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":"Materialwiss. Werkstofftech. 6/2026","authors":"","doi":"10.1002/mawe.70152","DOIUrl":"https://doi.org/10.1002/mawe.70152","url":null,"abstract":"","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 6","pages":"529-532"},"PeriodicalIF":1.0,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148616728","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":"Optimized welding of austenitic chromium-nickel steel rollers of food machinery and lines\u0000 Projektierung der Mechanisierung des Schweißprozesses von Zylindern aus austenitischem Chrom-Nickel-Stahl","authors":"M. Makúch,&nbsp;J. Krmela,&nbsp;V. Krmelová","doi":"10.1002/mawe.70068","DOIUrl":"https://doi.org/10.1002/mawe.70068","url":null,"abstract":"<p>The article deals with the welding process of a specific part of food machinery and lines – rollers. Rollers come into direct contact with dough and are mainly used to reduce dough thickness. Austenitic chromium-nickel steel X5CrNi1810 is used for rollers. This steel is characterized by very good corrosion resistance, cold formability and weldability. The roller consists of a tube, two surfaces and a supporting shaft. These individual parts are connected by welds, and the roller acquires its final shape after machining on a lathe. This operation is followed by surface treatment – hard chrome plating and surface grinding to a roughness of Ra 0.8. The welding process is optimized. The KEMPACT PULSE 3000 welding source with a KEMPACTCOOL 10 torch cooling unit is used for welding. Macroscopic observation of welds and hardness tests are carried out. The results of changing welding technology showed significant time savings during welding. The final time after optimizing the welding process is only 14 minutes, a time saving of 27 minutes compared to the old welding process.</p><p>Der Artikel befasst sich mit dem Schweißprozess eines bestimmten Teils von Lebensmittelmaschinen und -linien – der Walzen. Walzen kommen in direkten Kontakt mit dem Teig und werden hauptsächlich zur Reduzierung der Teigdicke eingesetzt. Für die Walzen wird austenitischer Chrom-Nickel-Stahl X5CrNi1810 verwendet. Dieser Stahl zeichnet sich durch eine sehr gute Korrosionsbeständigkeit, Kaltumformbarkeit und Schweißbarkeit aus. Die Rolle besteht aus einem Rohr, zwei Flächen und einer Stützwelle. Diese Einzelteile werden durch Schweißnähte miteinander verbunden und die Walze erhält nach der Bearbeitung auf einer Drehmaschine ihre endgültige Form. Daran schließt sich die Oberflächenbehandlung an – Hartverchromung und Flachschleifen bis zu einer Rauheit von Ra = 0,8. Der Schweißprozess wird optimiert. Zum Schweißen kommt die Schweißquelle KEMPACT PULSE 3000 mit einem KEMPACTCOOL 10 Brennerkühlgerät zum Einsatz. Es werden makroskopische Betrachtungen von Schweißnähten und Härteprüfungen durchgeführt. Die Ergebnisse der Umstellung der Schweißtechnologie zeigten eine deutliche Zeitersparnis beim Schweißen. Die letzte Zeit nach der Optimierung des Schweißprozesses beträgt nur noch 14 Minuten, eine Zeitersparnis von 27 Minuten gegenüber dem alten Schweißprozess.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 6","pages":"616-622"},"PeriodicalIF":1.0,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615444","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":"Stress analysis of the bicycle frame\u0000 Spannungsanalyse von Fahrradrahmen","authors":"D. Koštialiková,&nbsp;M. Janeková,&nbsp;D. Bakošová,&nbsp;P. Dubcová,&nbsp;A. Bakošová,&nbsp;M. Kuvik","doi":"10.1002/mawe.70096","DOIUrl":"https://doi.org/10.1002/mawe.70096","url":null,"abstract":"<p>The aim of the work is to use SolidWorks for the selection of the most suitable material for the bicycle frame, which meets the criteria of strength characteristics for the manufacturing of a lightweight bicycle structure. The choice of material for the bicycle frame is one of the important aspects of the final product. It has an impact on the rideability, comfort, appearance, durability and the price of the overall product. Strength analysis allows us to determine the suitability of the selected material for the chosen load and based on its results was selected the right material. In this work, three types of 3D models of bicycle frames have been created, keeping the standard dimensions. Based on the results of the strength analysis and by comparing the maximum stress and the resulting weight, the most suitable material among the analysed materials was selected. The design with changed head tube diameter and thickness was considered as the best bicycle frame. Composite Carbon Fiber Reinforced Polymer (CFRP) and 6061-T6 aluminium alloy were evaluated among the most suitable materials for this type of frame that met all the criteria.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 6","pages":"623-631"},"PeriodicalIF":1.0,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615721","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":"Cover Picture: (Materialwiss. Werkstofftech. 6/2026)","authors":"","doi":"10.1002/mawe.70151","DOIUrl":"https://doi.org/10.1002/mawe.70151","url":null,"abstract":"<p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 6","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/mawe.70151","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148616726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electronic speckle pattern interferometry (ESPI) and computational modeling in the analysis of vibration modes and material parameters of polyamide-based composites reinforced with carbon fibers\u0000 Elektronische Speckle-Muster-Interferometrie und computergestützte Modellierung bei der Analyse von Schwingungsmoden und Werkstoffparametern von mit Kohlenstofffasern verstärkten Verbundwerkstoffen auf Polyamidbasis","authors":"D. Bakošová,&nbsp;A. Bakošová,&nbsp;P. Dubcová,&nbsp;D. Koštialiková,&nbsp;A. Dubec,&nbsp;M. Janeková,&nbsp;J. Maceík","doi":"10.1002/mawe.70098","DOIUrl":"https://doi.org/10.1002/mawe.70098","url":null,"abstract":"<p>Electronic speckle pattern interferometry is a non-contact method used to analyze the vibrational modes of mechanical structures. Due to its ability to precisely map deformations and stress in samples made of various materials, it provides a unique insight into the behavior of materials under dynamic loading. This work focuses on the application of electronic speckle pattern interferometry in investigating the vibrational characteristics of composite materials based on polyamide reinforced with carbon fibers in varying weight ratios. The carbon fibers were surface-modified using nitric acid and silica nanoparticles to increase their surface energy and enhance adhesion to the polymer matrix. These modifications contribute to improved mechanical properties of the composite. Based on the analysis of vibrational modes, key material parameters were determined, namely, the tensile modulus of elasticity, Poisson's ratio, and shear modulus. The obtained vibrational mode results were compared with numerical simulations performed using the Finite Element Method, which allowed for validation of the measurement accuracy and a better understanding of the dynamic behavior of the composites.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 6","pages":"601-607"},"PeriodicalIF":1.0,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615325","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 effect of processing temperature on the properties of thin TiO2 films on a steel substrate\u0000 Einfluss von Prozesstemperatur und Eigenschaften von Titandioxidbeschichtungen auf Stahl","authors":"I. Papučová,&nbsp;J. Pagáčová,&nbsp;J. Šulcová,&nbsp;Andrea Feriancová,&nbsp;I. Barényi,&nbsp;M. Kohutiar,&nbsp;A. E. Nowicka","doi":"10.1002/mawe.70095","DOIUrl":"https://doi.org/10.1002/mawe.70095","url":null,"abstract":"<p>Thin titanium dioxide films represent a sophisticated approach to surface modification of materials. They are used as anticorrosive, anti-abrasive and antistatic coatings, protecting surfaces from wear, atmospheric and thermal effects. Additionally, they are applied as antireflective, self-cleaning or conductive transparent films on glass. This work focuses on the preparation and characterization of thin titanium dioxide films deposited on stainless steel substrates, depending on the processing temperature. The films were prepared by the sol-gel method from titanium isopropoxide and applied to the substrates using the dip-coating technique. The films were heat treated at 400 °C and 450 °C. The elemental composition of the films was monitored by x-ray fluorescence spectrometry. The morphology and surface roughness of the films were observed by atomic force microscopy. Nanoindentation analysis was used for determining the nanomechanical properties of films. The sessile drop method was used to evaluate the hydrophobicity and surface free energy of the deposited films, and the given properties were also applied for evaluation of effects of UV irradiation. Considering the investigated properties, it was found that heat treatment at 450 °C is more suitable for the preparation of the given thin TiO₂ films.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 6","pages":"638-644"},"PeriodicalIF":1.0,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615241","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 micropurity on the failure of the steel reinforcement in the production process","authors":"P. Dubcová,&nbsp;J. Vavro Jr.,&nbsp;J. Vavro,&nbsp;A. Dubec,&nbsp;A. Bakošová,&nbsp;D. Bakošová,&nbsp;D. Koštialiková,&nbsp;M. Janeková,&nbsp;J. Maceík","doi":"10.1002/mawe.70146","DOIUrl":"https://doi.org/10.1002/mawe.70146","url":null,"abstract":"<p>During the production of the car structure, even the smallest defects and production errors, which could negatively affect the function of the given components are prohibited. Such defects could cause traffic accident or pose risk to the passenger's health. This paper focuses on conducting a material study of the reinforcing element in a dynamically stressed car component and aims to determine the causes of defects occurring during its production process. The examined component is manufactured from structural fine-grained microalloy steel using sheet metal cold forming technology. Although only one type of steel was used, there were two material deliveries, with one of them showing a significant error rate, evidenced by extensive surface cracks in the edge areas of the sheet metal part. These microcracks were located in places where extensive reshaping of the sheet blank occurs. The methods of optical microscopy, scanning electron microscopy and energy-dispersive spectroscopy were employed in the material analysis. Furthermore, a static tensile test and the Vickers hardness test were performed to determine changes in the mechanical properties of the examined material.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 6","pages":"556-566"},"PeriodicalIF":1.0,"publicationDate":"2026-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615331","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":"Materialwiss. Werkstofftech. 5/2026","authors":"","doi":"10.1002/mawe.70142","DOIUrl":"https://doi.org/10.1002/mawe.70142","url":null,"abstract":"","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 5","pages":"365-370"},"PeriodicalIF":1.0,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373428","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":"Effect of PEO coating on mechanical properties of stamped wrought Al 6451 alloy\u0000 Einfluss der PEO-Beschichtung auf die mechanischen Eigenschaften der gestanzten Aluminium-Knetlegierung AW 6451","authors":"Y. Zheng,&nbsp;J. Li,&nbsp;W. Shen,&nbsp;T. Zhang,&nbsp;H. Hu,&nbsp;X. Nie","doi":"10.1002/mawe.70090","DOIUrl":"https://doi.org/10.1002/mawe.70090","url":null,"abstract":"<p>Experimental specimens prepared with stamped wrought Al 6451 alloy, which mainly contains 0.75 % Si and 0.58 % Mg and widely applied in automotive industries for body closure, were tested for tensile properties by comparing uncoated and plasma electrolytic oxidation coated specimens subjected to tensile tests. The properties including ultimate tensile strength (UTS), yield strength (YS), elongation (e_f) and elastic modulus (E) were evaluated by tensile tests. Following the coating layer built up to 3 μm and 10 μm, the ultimate tensile strength reduced from 161.5 MPa to 143.6 MPa, 137.0 MPa, the yield strength reduced from 86.8 MPa to 38.6 MPa and 38.0 MPa, the e_f reduced from 16.2 % to 15.0 %, 15.3 %, the elastic modulus elevated from 62.9 GPa to 84.4 GPa, 79.0 GPa, respectively. The microstructure was analyzed by scanning electron microscope and energy dispersive spectroscopy, and the observations indicated that the coating layer provided initiation sites of cracking and consequently reduced the tensile strength and strength hardening rates of the alloy under tensile loading.</p><p>Versuchsproben aus gestanzter Knetlegierung AW 6451, die hauptsächlich 0,75 % Si und 0,58 % Mg enthält und in der Automobilindustrie häufig für Karosserieteile verwendet wird, wurden auf ihre Zugfestigkeit geprüft. Unbeschichtete und plasmaelektrolytisch oxidierte Proben wurden Zugversuchen unterzogen und verglichen. Die Eigenschaften, darunter Zugfestigkeit (UTS), Streckgrenze (YS), Dehnung (e_f) und Elastizitätsmodul (E), wurden durch Zugversuche ermittelt. Nachdem die Beschichtungsschicht auf 3 μm und 10 μm aufgebaut war, verringerte sich die Zugfestigkeit von 161,5 MPa auf 143,6 MPa, 137,0 MPa, die Streckgrenze von 86,8 MPa auf 38,6 MPa und 38,0 MPa, die Dehnung von 16,2 % auf 15,0 % bzw. 15,3 % und der Elastizitätsmodul von 62,9 GPa auf 84,4 GPa bzw. 79,0 GPa. Die Mikrostruktur wurde mittels Rasterelektronenmikroskop und energiedispersiver Spektroskopie analysiert, und die Beobachtungen zeigten, dass die Beschichtungsschicht Ausgangspunkte für die Rissbildung bot und infolgedessen die Zugfestigkeit und die Festigkeitsaushärtungsraten der Legierung unter Zugbelastung verringerte.</p>","PeriodicalId":18366,"journal":{"name":"Materialwissenschaft und Werkstofftechnik","volume":"57 5","pages":"457-465"},"PeriodicalIF":1.0,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148373377","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}