Jianshu Zheng, Boning Zhang, Guowei Wang, Lan Liu, Chao Shen, Zhuorui Song, Lei Zheng
{"title":"Enhanced Oxidation Resistance of Pt-Containing Inconel 718 Alloy through Facilitated Formation of Protective Chromia","authors":"Jianshu Zheng, Boning Zhang, Guowei Wang, Lan Liu, Chao Shen, Zhuorui Song, Lei Zheng","doi":"10.1002/adem.202402008","DOIUrl":"https://doi.org/10.1002/adem.202402008","url":null,"abstract":"<p>This study investigates the influence of Pt addition on the oxidation behavior of a Cr<sub>2</sub>O<sub>3</sub>-forming superalloy. Inconel 718 (IN718) alloys with varying Pt content were prepared and subjected to isothermal oxidation tests. The results demonstrate that Pt significantly enhances the oxidation resistance of IN718, as evidenced by reduced weight gain, thinner oxide layers, and smaller oxide particles. Pt addition also increases the activation energy for both initial interface oxidation and ion diffusion during long-term oxidation. Furthermore, Pt promotes the formation of a Cr<sub>2</sub>O<sub>3</sub> layer while suppressing the formation of other undesirable oxides, resulting in a more cohesive and stable oxide layer. The improved oxidation resistance is attributed to two key factors: during the initial oxidation stage, Pt, as a noble element, reduces the activity of the primary oxide-forming element Cr to oxidative environments, thereby lowering its susceptibility to initial oxidation at the metal–oxidant interface. During long-term oxidation, Pt preferentially substitutes for Ni in major phases such as γ-Ni(Cr,Fe) and γ′-Ni<sub>3</sub>(Al,Ti), locally increasing the Cr composition. This promotes Cr oxidation, effectively suppressing the oxidation of Ni or Fe. These findings suggest that Pt addition is a promising approach for enhancing oxidation resistance in alloy design.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202402008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Subodhana Praballian Aswathy, Asha S. Kumar, Viswanathan S. Saji, Sheik Muhammadhu Aboobakar Shibli
{"title":"Near-Infrared Reflectance, Thermal Shielding, and Corrosion Resistance of Neodymium-Modified Zinc Aluminate Spinel-Based Zinc Phosphate Coatings","authors":"Subodhana Praballian Aswathy, Asha S. Kumar, Viswanathan S. Saji, Sheik Muhammadhu Aboobakar Shibli","doi":"10.1002/adem.202401351","DOIUrl":"https://doi.org/10.1002/adem.202401351","url":null,"abstract":"<p>Given the increasing demand for energy-efficient and durable coatings, particularly in outdoor environments, this study investigates the development of lavender-shaded neodymium (Nd)-modified zinc aluminate pigment for thermal energy-saving applications. The results evidence the potential of incorporating this Nd-modified ZnAl<sub>2</sub>O<sub>4</sub> pigment in zinc phosphate (ZP) coating to tune the morphology, microstructure, near-infrared (NIR) reflectance, thermal shielding, and corrosion resistance capability. The study provides a detailed elucidation of the mechanism of pigment particles’ incorporation into ZP coating, revealing enhanced nucleation and crystal size refinement, leading to denser coating with improved NIR reflectance and corrosion resistance, with aesthetic requirements potentially suitable for outdoor environments. Quantitative analysis reveals a maximum NIR reflectance of 93%, thermal shielding capacity with a temperature difference of 15.4 °C, and a more than threefold reduction in corrosion current density. The study underscores the potential of these coatings for energy-saving applications and outdoor use, highlighting their stability and effectiveness in various environmental conditions.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ming Wu, Fuchu Liu, Yuxiao Lin, Miao Wang, Yi Wang, Shilin Zhou, Hao Liu, Guangchao Han
{"title":"Effect of Four Process Parameters on Flexural Strength and Porosity of Metakaolin Ceramics Fabricated by Material Extrusion: Optimization and Predictive Models via Orthogonal Experiments","authors":"Ming Wu, Fuchu Liu, Yuxiao Lin, Miao Wang, Yi Wang, Shilin Zhou, Hao Liu, Guangchao Han","doi":"10.1002/adem.202401197","DOIUrl":"https://doi.org/10.1002/adem.202401197","url":null,"abstract":"<p>A high-strength metakaolin-based porous ceramics are fabricated using slurry-based material extrusion via optimizing four key process parameters, including nozzle internal diameter, height to diameter ratio, filling rate, and printing speed. The orthogonal experiments are used to adjust flexural strength and porosity, and the optimal process parameters are obtained by comprehensive scoring and range analysis methods. The predictive models of strength-parameters, porosity-parameters, and strength-porosity are established and validated. The results show that the optimal process parameters for high-strength and high-porosity ceramics are 0.51 mm nozzle internal diameter, 70% height to diameter ratio, 100% filling rate, and 15 mm s<sup>−1</sup> printing speed. The correctness and predictability of three predictive models are proved by two methods, which are the mutual validation and comparison between theoretical and actual values. And the error rates between theoretical and actual results are less than 7%. This work provides guidance for the rapid fabrication of ceramics with adjustable strength and porosity by material extrusion, and the established predictive models can pave the way for its wider application in the practice.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Interactive Fluid–Solid Approach for Numerical Modeling of Composite Metal Foam Behavior under Compression","authors":"Aman Kaushik, Afsaneh Rabiei","doi":"10.1002/adem.202470070","DOIUrl":"https://doi.org/10.1002/adem.202470070","url":null,"abstract":"<p><b>Composite Metal Foam Behavior</b>\u0000 </p><p>In article number 2401267, Afsaneh Rabiei and Aman Kaushik present a numerical approach to study the performance of composite metal foam (CMF) under compression using smooth particle hydrodynamics modeling of entrapped air inside the porosities of CMF. The numerical and experimental results agree well, opening room to further the fluid–solid interaction study of entrapped air inside the porosities of CMF to effectively predict its performance under a variety of loading scenarios.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"26 24","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202470070","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"One-Step Hydrothermal Process to Fabricate Hydrophobic Mg–Al Layered Double Hydroxide Coating on MAO–Coated AZ31 Magnesium Alloy and Its Durability","authors":"Jumei Zhang, Zhihu Wang","doi":"10.1002/adem.202402135","DOIUrl":"https://doi.org/10.1002/adem.202402135","url":null,"abstract":"<p>\u0000In order to improve the corrosion resistance of micro-arc oxidation (MAO) ceramic layer of AZ31 magnesium alloy, a hydrophobic Mg–Al layered double hydroxide (LDH) coating was prepared on its surface by a one-step hydrothermal method. The microstructure of the coating was characterized by scanning electron microscope, energy disperse spectroscopy, X-ray diffractometer, and Fourier transform infrared spectrometer. The wettability and corrosion resistance of the coating were studied by contact angle (CA) measuring instrument and electrochemical workstation. Meanwhile, the durability of the coating was evaluated by sandpaper abrasion, tape peeling and immersion test. The results showed that the hydrophobic Mg–Al LDH coating can be successfully prepared on the surface of MAO ceramic layer by one-step hydrothermal treatment with alkaline aluminum nitrate solution containing sodium laurate. The hydrophobic Mg–Al LDH coating sealed the inherent defects of MAO ceramic coating, resulting in significantly improved corrosion resistance. With the extension of sandpaper abrasion distance, tape peeling times, and immersion time, the CA of the coating shows a downward trend, and the coating gradually changed from hydrophobic to hydrophilic. However, after the durability test, the coating still has good corrosion resistance, and its corrosion current density was still lower than that of MAO ceramic layer.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xulong An, Hao Li, Xinyi Yang, Jiahao Jiang, Zhengdi Liu, Lequn Kan, Lantian Zhang, Bin Gan, Wei Wei, Chenglin Chu, Wenwen Sun
{"title":"Influence of Discontinuous Precipitation on Microhardness and Wear Resistance in (FeCoNi)86Al7Ti7 High-Entropy Alloy","authors":"Xulong An, Hao Li, Xinyi Yang, Jiahao Jiang, Zhengdi Liu, Lequn Kan, Lantian Zhang, Bin Gan, Wei Wei, Chenglin Chu, Wenwen Sun","doi":"10.1002/adem.202402102","DOIUrl":"https://doi.org/10.1002/adem.202402102","url":null,"abstract":"<p>In this study, the effects of discontinuous precipitation, a process known to enhance mechanical properties in alloys, on the microstructure and mechanical properties of the (FeCoNi)<sub>86</sub>Al<sub>7</sub>Ti<sub>7</sub> high-entropy alloy (HEA) are investigated. Varying the aging temperatures leads to the formation of lamellar structures consisting of face-centered cubic (FCC) and body-centered cubic phases, which significantly influence the mechanical properties of the alloy. The aging treatments reveal an inverse relationship between temperature and microhardness, with values decreasing from 890 to 700 HV as the temperature rises from 550 to 650 °C. Despite this reduction, the alloy retains a high hardness level, suitable for wear-resistant applications. The best wear resistance is observed at 550 °C, with a wear rate as low as 8.45 ± 1.6 × 10<sup>−5</sup> mm<sup>3</sup> N<sup>−1</sup> m<sup>−1</sup>. This is attributed to stacking faults and dislocations within the FCC lamellae, which enhance resistance to dislocation glide. In this study, the critical role of microstructural engineering in optimizing the properties of HEAs is highlighted, providing valuable insights for developing high-performance materials for specific engineering applications.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michael D. Toomey, Nihal Kanbargi, Logan T. Kearney, Holly Hinton, Sumit Gupta, Reyad Sawafta, Amit K. Naskar, Jaswinder Sharma
{"title":"Manufacturing of Continuous Core–Shell Hydrated Salt Fibers for Room Temperature Thermal Energy Storage","authors":"Michael D. Toomey, Nihal Kanbargi, Logan T. Kearney, Holly Hinton, Sumit Gupta, Reyad Sawafta, Amit K. Naskar, Jaswinder Sharma","doi":"10.1002/adem.202470068","DOIUrl":"https://doi.org/10.1002/adem.202470068","url":null,"abstract":"<p><b>Room Temperature Thermal Energy Storage</b>\u0000 </p><p>In article number 2400012, Michael D. Toomey, Jaswinder Sharma, and co-workers demonstrate the first example of wet-spun PCM fibers comprised of a polymer sheath and a salt hydrate core for thermal energy storage applications. Fibers produced using this scalable production method achieve enthalpies of melting of ca. 130 J/g, melting onset at 29°C, and supercooling of 4.8°C while retaining 96.5% of its phase change capacity after 1000 cycles.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"26 24","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202470068","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chennan Zhang, Yu Bai, Ting Li, Yuanming Gao, Wen Ma
{"title":"Enhancement of the Mechanical Properties and Biological Performance of Hydroxyapatite Coating by Selenium and Fluorine Ion Codoping","authors":"Chennan Zhang, Yu Bai, Ting Li, Yuanming Gao, Wen Ma","doi":"10.1002/adem.202402229","DOIUrl":"https://doi.org/10.1002/adem.202402229","url":null,"abstract":"<p>Ion doping is a feasible method to improve the mechanical and biological properties of hydroxyapatite (HA) as an implant coating material. F and Se codoped HA (SeF-HA) powder is synthesized with the method of chemical codeposition and directly used for coating preparation via suspension plasma spray technology. Various characterizations indicate that F and Se ions have been codoped into the HA structure by substituting OH<sup>−</sup> and PO<sub>4</sub><sup>3−</sup> groups, respectively. The SeF-HA coatings exhibit excellent adhesion strength with the substrate, fully meeting the ISO requirement of 15 MPa. The dissolution behavior is investigated by immersing the coatings in simulated body fluid for different durations. The results show that the dissolution rate of the SeF-HA coatings is lower than that of the single Se-doped HA coating, suggesting an improvement in the stability of the SeF-HA coating. The in vitro studies show that the SeF-HA coating can promote the osteogenic activity of osteoblasts and has an antiproliferative effect on osteosarcoma cells. Based on these results, it can be concluded that the combined effects of Se and F can make suspension plasma sprayed HA coating a potential coating material for dental implants or for bone tissue repair in osteosarcoma patients.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rouven Lamprecht, Luca Vialetto, Tobias Gergs, Finn Zahari, Richard Marquardt, Hermann Kohlstedt, Jan Trieschmann
{"title":"Thickness-Related Analog Switching in SiOx/Cu/SiOx Memristive Devices for Neuromorphic Applications","authors":"Rouven Lamprecht, Luca Vialetto, Tobias Gergs, Finn Zahari, Richard Marquardt, Hermann Kohlstedt, Jan Trieschmann","doi":"10.1002/adem.202401824","DOIUrl":"https://doi.org/10.1002/adem.202401824","url":null,"abstract":"<p>This study examines the development of TiN/SiO<sub><i>x</i></sub>/Cu/SiO<sub><i>x</i></sub>/TiN memristive devices for neuromorphic applications using wedge-type deposition and Monte Carlo simulations. Identifying critical parameters for the desired device characteristics can be challenging with conventional trial-and-error methods, which often obscure the effects of varying layer compositions. By employing an off-center thermal evaporation method, a thickness gradient of SiO<sub><i>x</i></sub> and Cu on a 4 inch wafer is created, facilitating detailed resistance map analysis through semiautomatic measurements. This approach allows for investigating the influence of layer composition and thickness while keeping other process conditions constant. Combining experimental data with simulations provides a precise understanding of layer thickness distribution and its impact on device performance. Optimizing the SiO<sub><i>x</i></sub> layers to be below 12 nm, coupled with a discontinuous Cu layer with a nominal thickness under 0.6 nm, exhibits analog switching properties with an <i>R</i><sub>on</sub>/<i>R</i><sub>off</sub> ratio of >100, suitable for neuromorphic applications, while <i>R</i> × <i>A</i> and power exponent <i>γ</i> analysis show signs of multiple conduction mechanisms. The findings highlight the importance of SiO<sub><i>x</i></sub> and Cu thickness in determining switching behavior, offering insights for developing high-performance analog switching components for bioinspired computing systems.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202401824","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Transient Thermal Mapping Utilizing the Sintering of Glass-Ceramics","authors":"Noah A. Burke, Otto J. Gregory","doi":"10.1002/adem.202401585","DOIUrl":"https://doi.org/10.1002/adem.202401585","url":null,"abstract":"<p>Thermal paints are essential for mapping the surface temperature of gas turbine engine components but can only indicate maximum temperature. A novel transient thermal history sensor that combines the capabilities of a thermocouple with those of a thermal paint is developed here, enabling the retrieval of full thermal history using a “sintering” model. The glassy ceramic thermal paint undergoes a qualitative optical transition due to sintering in response to temperature that is quantified using UV–vis spectroscopy. This provides high-resolution transient temperature measurement (±6 °C) when maximum temperature is above its glass transition temperature (<i>T</i><sub>g</sub>) of 563 °C and up to 660 °C. The glass-ceramic coating exhibits strong adhesion to Inconel 718 substrates due to matched coefficients of thermal expansion. By fabricating similar paints with distinct temperature ranges and placing them in proximity, this approach can significantly reduce the number of thermocouples needed for surface temperature mapping, thereby improving the accuracy of measurements required for engine validation.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 2","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}