Advanced Engineering Materials最新文献_第3页

Preparation, Microstructure, and Thermophysical Properties of a Novel (La, Nd, Tm, Yb, Lu)2Zr2O7 High-Entropy Ceramic for Thermal Barrier Coatings

IF 3.4 3区材料科学

Advanced Engineering Materials Pub Date : 2025-03-03 DOI: 10.1002/adem.202402593

Yanli Wang, Haojun Geng, Lingxu Yang, Liankui Wu, Xu Wang, Chaoliu Zeng, Huijun Liu

{"title":"Preparation, Microstructure, and Thermophysical Properties of a Novel (La, Nd, Tm, Yb, Lu)2Zr2O7 High-Entropy Ceramic for Thermal Barrier Coatings","authors":"Yanli Wang, Haojun Geng, Lingxu Yang, Liankui Wu, Xu Wang, Chaoliu Zeng, Huijun Liu","doi":"10.1002/adem.202402593","DOIUrl":"https://doi.org/10.1002/adem.202402593","url":null,"abstract":"The concept of high entropy has brought new opportunities for designing and optimizing thermal barrier coating (TBC) materials for aircraft engines that meet higher thrust-to-weight ratios. Herein, two novel high-entropy rare-earth zirconates (HE-REZs) with the chemical formula of (La0.2Nd0.2Tm0.2Yb0.2Lu0.2)2Zr2O7 (La0.2) and (La0.07Nd0.07Tm0.26Yb0.3Lu0.3)2Zr2O7 (La0.07) are synthesized by solid-state reaction. Results show that the La0.2 sample is composed of defect fluorite and pyrochlore dual-phase structure and the La0.07 sample is single-phase defect fluorite structure. The average grain growth rates of La0.07 and La0.2 samples are much lower than that of La2Zr2O7 (LZ) during annealing at 1300 °C for 100 and 200 h, which may be ascribed to the sluggish diffusion effect of high-entropy ceramics. Additionally, the thermal expansion coefficients of La0.07 and La0.2 at 1200 °C are 11.32 × 10−6 and 10.90 × 10−6 K−1, respectively. The thermal conductivity of La0.07 sample is 1.41 W m−1 K−1 at 1000 °C, which is 28% lower than that of LZ (1.97 W m−1 K−1), while that of La0.2 sample is 2.27 W m−1 K−1. This work provides a new insight into developing novel single-phase and dual-phase HE-REZ ceramics with higher thermophysical properties, which would be significant in material development for TBCs.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801510","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}

引用次数: 0

Improving Cyclic Oxidation Resistance of Additively Manufactured IN939 Superalloy via Chemical Vapor Aluminizing

IF 3.4 3区材料科学

Advanced Engineering Materials Pub Date : 2025-03-02 DOI: 10.1002/adem.202402805

Fatih Guler, Ahmet Arda Inceyer, Seda Kol, Metin Usta, Huseyin Aydin, Ozgul Keles

引用次数: 0

Direct Ink Writing (3D Printing) of Robust, Highly Efficient, Double-Half-Heusler Thermoelectric High-Entropy Alloy

IF 3.4 3区材料科学

Advanced Engineering Materials Pub Date : 2025-02-28 DOI: 10.1002/adem.202402283

Bifa Shimelis Haile, Varinder Pal, Tapas Pal, Surbhi Slathia, Gemechis Megersa Jigi, Solomon Demiss Negedu, Nishant Tiwari, Himanshu Singh, Antony Joseph, Femi Emmanuel Olu, Chandra Sekhar Tiwary

{"title":"Direct Ink Writing (3D Printing) of Robust, Highly Efficient, Double-Half-Heusler Thermoelectric High-Entropy Alloy","authors":"Bifa Shimelis Haile, Varinder Pal, Tapas Pal, Surbhi Slathia, Gemechis Megersa Jigi, Solomon Demiss Negedu, Nishant Tiwari, Himanshu Singh, Antony Joseph, Femi Emmanuel Olu, Chandra Sekhar Tiwary","doi":"10.1002/adem.202402283","DOIUrl":"https://doi.org/10.1002/adem.202402283","url":null,"abstract":"In thermoelectric (TE) devices, geometry of the TE-leg has a significant impact on its energy conversion efficiency. TE leg fabrication still relies on traditional methods with regular solid shapes which limits the conversion efficiency. In the present work, different geometries (solid, mesh, hollow, and honeycomb) based on a double-half-Heusler (hH) (Ti1.75Zr0.25Ni1.5Fe0.5SnSb) high-entropy alloy are 3D printed using direct ink writing technique. Through the rheological properties, good shear-thinning characteristics and excellent printability are shown. X-ray diffraction of the as-cast and sintered 3D-printed structures confirms the formation of dominant hH phase. Using infrared imaging, it is revealed that the heat distribution in these structures decreases as an order of as-cast, solid, mesh, hollow, and honeycomb geometries due to improved surface area to volume ratio respectively. Using X-ray micro-computed tomography, the total porosity of the 3D-printed sample is shown to be around 24.89%. Honeycomb-shaped structure shows highest temperature gradient (from top to bottom region of sample) of 174 °C as compared to as cast (60.1 °C), which is further validated using finite-element analysis. In addition, specific energy absorption of 3D-printed structure is enhanced by 18.5% compared to that of as-cast structure.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801489","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}

引用次数: 0

Study on the Effect of T6 Heat Treatment on the Properties of Friction Surfacing AA7075 Aluminum Alloy Coatings

IF 3.4 3区材料科学

Advanced Engineering Materials Pub Date : 2025-02-27 DOI: 10.1002/adem.202402824

Xueming Hao, Xuemei Liu, Dongting Wu, Yong Zou, Hui Zheng, Xun Lv

{"title":"Study on the Effect of T6 Heat Treatment on the Properties of Friction Surfacing AA7075 Aluminum Alloy Coatings","authors":"Xueming Hao, Xuemei Liu, Dongting Wu, Yong Zou, Hui Zheng, Xun Lv","doi":"10.1002/adem.202402824","DOIUrl":"https://doi.org/10.1002/adem.202402824","url":null,"abstract":"\u0000Friction surfacing is an advanced solid-state forming technology, which is widely used in many fields, such as repairing and remanufacturing. This study investigates the effect of T6 heat treatment on the properties of the friction surfacing coating of AA7075 aluminum alloy. First, the AA7075 aluminum alloy friction surfacing coating is fabricated, and its microstructure, hardness, tensile properties, and corrosion resistance are systematically analyzed. Subsequently, the coating undergoes T6 heat treatment, and the performance changes before and after the heat treatment are compared. The results of the study show that after T6 heat treatment, the grain size of the friction surfacing coating increases by ≈28% compared to the untreated coating, but the grain size remains finer than that of the original rod material. Compared to the untreated coating, the tensile strength of the heat-treated coating increases by 14%, and the elongation improves significantly by 101%, reaching 84 and 213% of the original rod material, respectively. In terms of corrosion resistance, the corrosion rate of the heat-treated coating decreases compared to the untreated sample, indicating that T6 treatment enhances the corrosion resistance of the coating.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801369","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}

引用次数: 0

Research on the Microstructural Evolution of a Novel AlMgZnErZr Alloy during the Cold Stretching Process 新型 AlMgZnErZr 合金在冷拉伸过程中的微结构演变研究

IF 3.4 3区材料科学

Advanced Engineering Materials Pub Date : 2025-02-26 DOI: 10.1002/adem.202402365

Jianyu Zhang, Wu Wei, Jieming Gao, Wei Shi, Xiaorong Zhou, Hui Huang, Zuoren Nie

引用次数: 0

Scalable Manufacturing of Polymer Multi-Nanofiber Twisted Yarns

IF 3.4 3区材料科学

Advanced Engineering Materials Pub Date : 2025-02-26 DOI: 10.1002/adem.202401897

Mohamad Keblawi, Adaugo Enuka, Darrian Shufford, Vince Beachley

{"title":"Scalable Manufacturing of Polymer Multi-Nanofiber Twisted Yarns","authors":"Mohamad Keblawi, Adaugo Enuka, Darrian Shufford, Vince Beachley","doi":"10.1002/adem.202401897","DOIUrl":"https://doi.org/10.1002/adem.202401897","url":null,"abstract":"\u0000Continuous high-strength polymer nanofiber yarns can be assembled into textiles suitable for numerous applications that benefit from the high surface-area-to-volume ratio of the component nanofibers. Electrospun nanofibers have been used to make multifiber twisted yarns (MFTYs). Traditionally, electrospun nanoyarns are made using self-bundling methods or cone spinning. However, these approaches inhibit ordered fiber architecture or postprocessing of filaments prior to yarn fabrication limiting yarn length, uniformity, and mechanical strength. A spinning process utilizing automated parallel track collection is capable of manufacturing MFTYs with microarchitecture control and integration of individual fiber postdrawing prior to yarn assembly. The advantage of this process is the ability to optimize electrospinning parameters, postprocessing parameters, and yarn spinning parameters independently. Polycaprolactone (PCL) fibers are electrospun with various parameters and made into long MFTYs that retain up to 50% of the strength of individual component nanofibers. Mechanical testing shows relationships between spinning parameters and yarn strength. The tenacity of PCL MFTYs exceeds the tenacity of most reported self-bundled nanofiber yarns by an order of magnitude or more. Thus, the alternative nanoyarn fabrication method presented in this work is able to produce yarns with highly tunable parameters with a significant increase in mechanical strength compared to other electrospun nanoyarns.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202401897","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801402","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}

引用次数: 0

Promoting Nanosecond Laser Micromachining of Honeycomb Microstructure by In situ Tailoring Laser Power

IF 3.4 3区材料科学

Advanced Engineering Materials Pub Date : 2025-02-22 DOI: 10.1002/adem.202402613

Shuo Jin, Qianhe Wang, Oleg Pasichnyi, Chenwei Gao, Junjie Zhang

{"title":"Promoting Nanosecond Laser Micromachining of Honeycomb Microstructure by In situ Tailoring Laser Power","authors":"Shuo Jin, Qianhe Wang, Oleg Pasichnyi, Chenwei Gao, Junjie Zhang","doi":"10.1002/adem.202402613","DOIUrl":"https://doi.org/10.1002/adem.202402613","url":null,"abstract":"While the functionality of textured surface is largely affected by the texturing quality, how to precisely fabricate honeycomb microstructures with high material utilization and structural stability is crucial for their application potential. In the present work, a strategy of preprogramming-based in situ tailoring laser power in different pulses is proposed for improving the processing quality of honeycomb microstructures by nanosecond laser micromachining. Firstly, a finite element (FE) model of tailoring laser power based on the thermodynamic diffusion equation of nanosecond laser ablation is established. Secondly, the effects of different laser parameters on the processing quality of honeycomb microstructures are investigated by FE simulations and experiments, which derive the rational range of laser processing parameters for the highest surface quality. Thirdly, the effectiveness of in situ tailoring laser power is demonstrated through FE simulation and experiment. Finally, nanosecond laser micromachining experiments with the proposed scheme of in situ tailoring laser power are carried out, with which a significant 40% improvement in the processing quality of honeycomb microstructures is obtained. Current work provides a feasible solution for enhancing processing quality of complex microstructures by laser micromachining.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801898","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}

引用次数: 0

Machine Learning-Based Exploration of Dopants in Li7La3Zr2O12 in Reference to Lithium-Ion Conductivity

IF 3.4 3区材料科学

Advanced Engineering Materials Pub Date : 2025-02-22 DOI: 10.1002/adem.202402584

Rahulkumar Rajkumar Sharma, Vatsal Venkatkrishna, Varun Balakrishna, Somenath Ganguly

引用次数: 0

Microstructure, Mechanical Properties, Corrosion Behavior, and in Vitro Assessment of Mg-Zn-Cu Alloy for Gastrointestinal Anastomosis Staple Application

IF 3.4 3区材料科学

Advanced Engineering Materials Pub Date : 2025-02-21 DOI: 10.1002/adem.202402639

Hongxu Liu, Tao Luo, Ziad Alzubair Osman Sirag, Jia She, Huabing Lu, Dongli Xia, Jing Tang, Zhenbei Liu, Aimin Liu

{"title":"Microstructure, Mechanical Properties, Corrosion Behavior, and in Vitro Assessment of Mg-Zn-Cu Alloy for Gastrointestinal Anastomosis Staple Application","authors":"Hongxu Liu, Tao Luo, Ziad Alzubair Osman Sirag, Jia She, Huabing Lu, Dongli Xia, Jing Tang, Zhenbei Liu, Aimin Liu","doi":"10.1002/adem.202402639","DOIUrl":"https://doi.org/10.1002/adem.202402639","url":null,"abstract":"Magnesium (Mg) is an ideal choice in gastrointestinal anastomosis staples due to its well-known biodegradability and biocompatibility. However, the low strength and poor formability of pure Mg pose challenges in the preparation of wire materials suitable for surgical staples, thereby limiting its application as staples in gastrointestinal surgeries. This study investigates the microstructural, mechanical, corrosion, biocompatibility, and antibacterial properties of Mg-2Zn-xCu alloys (x = 0.1, 0.6, 1.2 wt%) with emphasis on the possible application of Mg-2Zn-0.1Cu alloy wire as a biodegradable surgical staple. Mg-2Zn-0.1Cu alloy exhibits good mechanical properties (UTS of 234 MPa, EL of 17.7%) and low corrosion rate of 5.21 mm year−1 with good biosafety and antibacterial capability. Therefore, this alloy is chosen to prepare Φ0.25 mm wire with an excellent balance between tensile strength (274 MPa) and corrosion resistance. The wire bent at 30° maintains excellent structural integrity after immersion for 14 days. The B-shape staple derived from this wire exhibits a strength of 0.8 N, underscoring the suitability of Mg-2Zn-0.1Cu as an outstanding material for surgical staples.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801614","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}

引用次数: 0

Hydroxyl-Terminated Polyphenylene Oxide Improved Thermal and Dielectric Properties of Active Ester Cured SiO2/Epoxy Composites for Advanced Electronic Packaging

IF 3.4 3区材料科学

Advanced Engineering Materials Pub Date : 2025-02-21 DOI: 10.1002/adem.202402636

Yuanhang Chen, Yuying Sui, Peng Li, Feng Zhang, Shuhui Yu, Suibin Luo

{"title":"Hydroxyl-Terminated Polyphenylene Oxide Improved Thermal and Dielectric Properties of Active Ester Cured SiO2/Epoxy Composites for Advanced Electronic Packaging","authors":"Yuanhang Chen, Yuying Sui, Peng Li, Feng Zhang, Shuhui Yu, Suibin Luo","doi":"10.1002/adem.202402636","DOIUrl":"https://doi.org/10.1002/adem.202402636","url":null,"abstract":"Low-dielectric epoxy-based composites are crucial for advanced electronic packaging in the high-speed digital communication field. An effective method to achieving low dielectric loss (Df) is to construct active ester-curing system. However, the introduction of large ester groups negatively affects the thermal stability of cured epoxy composite. Herein, hydroxyl-terminated polyphenylene oxide (PPO) is incorporated into allyl bisphenol A-based active ester-cured SiO2/epoxy composites, and their thermal and dielectric properties are evaluated. By incorporating 20 wt% of PPO, the SiO2/epoxy composites achieve an ultralow Df of 0.0022 at 1 kHz and a low coefficient of thermal expansion of 29.0 ppm °C−1 below Tg, while the glass transition temperature (Tg) is increased from 97.7 to 117 °C and the value of Young's modulus is enhanced from 8610 to 10 331 MPa. Moreover, the introduction of PPO in the SiO2/epoxy composites significantly enhances the thermal and humid stability of the dielectric constant (Dk) and Df owing to the ultralow water absorption of 0.12%. These results demonstrate that the combination of PPO and active ester in SiO2/epoxy composites should be a potential strategy for designing advanced electronic packaging materials.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 7","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801613","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}

引用次数: 0