Advanced Engineering Materials最新文献

{"title":"Unidirectional Tape-Based Composites from Hemp and Pineapple Leaf Fiber: Mechanical Performance in Conventional and Bio-Based Matrices","authors":"Nina Graupner,&nbsp;Raja Bade,&nbsp;Valentin Ackermann,&nbsp;Roja M. Baumann,&nbsp;Corvin Bischoff,&nbsp;Jona F. Ebeling,&nbsp;Oskar Glenz,&nbsp;Marlo Groh,&nbsp;Jonathan Groth,&nbsp;Finja Hiller,&nbsp;Tom Hirschmüller,&nbsp;Felix Menke,&nbsp;Syntcha Ngantchou Lecdou,&nbsp;Mika Ohler,&nbsp;Daniel Rafii Vardiny,&nbsp;Darius Richter,&nbsp;Dario Röper,&nbsp;Henrik Schumacher,&nbsp;Theresa Stein,&nbsp;Benjamin Vorbeck,&nbsp;Elisabeth Wermter,&nbsp;Kay Kölzig,&nbsp;Jörg Müssig","doi":"10.1002/adem.202502251","DOIUrl":"10.1002/adem.202502251","url":null,"abstract":"<p>A newly developed unidirectional semi-finished product made from hemp or pineapple leaf fibers (PALF) is examined for its reinforcing potential in various polymer matrices, including epoxy, bio-based epoxy, polyhydroxyalkanoate (PHA), polybutylene adipate terephthalate (PBAT), and polylactide (PLA), at a fiber volume fraction of ≈40%. Compression-molded composites are characterized with respect to mechanical properties, interlaminar shear strength (ILSS), density, and void content. All systems show promising performance, with tensile strengths ranging from 110 MPa for PALF/PHA to 227 MPa for hemp/bio-based epoxy, and Young's moduli ranging from 9.8 to 22.7 GPa. At comparable ILSS levels, hemp-based composites exhibit higher strengths and stiffnesses, whereas PALF composites show increased void content. The observed microvoids appear less detrimental than macrovoids, supporting the materials’ suitability for lightweight structures. PALF composites demonstrate greater toughness than their hemp counterparts, with PALF/bio-based epoxy achieving an unnotched Charpy impact strength of 39 kJ m⁻² compared with 29 kJ m⁻² for hemp/bio-based epoxy. Although the full tensile strength potential of PALF cannot be realized—because the composites do not reach the fibers’ maximum elongation and therefore their maximum stress—the combination of low density and favorable mechanical behavior highlights both PALF and hemp-based composites as promisi ng candidates for structural lightweight applications.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 7","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202502251","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686035","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":"PBF-LB/M of Ti-6Al-4V: High-Pressure Solution Treatment and Aging for Applications in a Sustainable Aerospace","authors":"Mika León Altmann,&nbsp;Andre Danzig,&nbsp;Freerk Syassen,&nbsp;Rainer Fechte-Heinen,&nbsp;Anastasiya Toenjes","doi":"10.1002/adem.202502237","DOIUrl":"10.1002/adem.202502237","url":null,"abstract":"<p>Additive manufacturing allows great geometric freedom for lightweight components. As parts are progressively optimized in terms of topology and weight reduction in order to exploit potentials in additive manufacturing leading to smaller material cross sections, high-pressure solution treatment and aging heat treatments show an enormous potential for a more sustainable aviation by strongly improving material properties. In this work, the previous aerospace standard for Ti-6Al-4V (STD) at 920°C and 105 MPa of pressure is compared with the new low temperature and high-pressure standard (LTHP) at 815°C and 190 MPa and two high-pressure solution treatments and aging in α+β phase field at 930°C (ST_α+β) and super-<i>T</i>\u0000 _{\u0000 <i>β</i>\u0000} at 1050°C (ST_β), both at 105 MPa of pressure. As for LTHP the tensile strength can be increased by up to 8% compared to STD, the Charpy impact toughness decreases strongly by –19%. By ST_α+β the strength can be further increased by up to 14% compared with STD, while the Charpy impact toughness being –9% of STD is considerably higher compared to LTHP. Our study shows great potential for high-pressure solution treatment and aging of Ti-6Al-4V exploiting the potential of the initially super fine microstructure in terms of pore closing, high strength, ductility, and toughness.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 7","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202502237","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696246","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":"Manufacturing Continuous Fiber-Reinforced Printing Filaments: Development of a Post-Consolidation Unit","authors":"Daniel Beermann,&nbsp;Patrick Schiebel,&nbsp;David May","doi":"10.1002/adem.202502244","DOIUrl":"10.1002/adem.202502244","url":null,"abstract":"<p>A novel, temperature-controlled post-consolidation unit is developed to test its potential to improve the melt impregnation process used to manufacture continuous fiber-reinforced filaments for additive manufacturing of high-performance thermoplastics. Preliminary laboratory characterizations have identified Hexcel HexTow AS7 and Arkema Kepstan 6004 as suitable dry carbon-fiber roving and thermoplastic matrix material, respectively. Filaments are processed by melt impregnation with varying parameters (e.g., different temperatures), as well as with and without the post-consolidation unit. A thermographic camera is used to monitor the process and observe the temperature distribution of the filament during post-consolidation. The filament quality is determined by a 3-axis measurement device (filament diameter), micrographs, and X-ray microscopy. The test results show that the temperature of the filament drops below the glass transition temperature over a production length of less than 100 mm when cooled by air. Using the post-consolidation unit keeps the filament above the glass transition temperature of the matrix (160 °C) for a production length of 550 mm, allowing compaction by the integrated grooved rollers. The test results show that post-consolidation reduces defects, improves the roundness of the filament cross-section, and minimizes diameter variation.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 7","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202502244","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696274","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":"Laser Metal Deposition of Aluminum Alloys 7075 and 5083 with the Addition of Volatile Alloying Elements through Powder Blending","authors":"Finn Bendixen,&nbsp;Anastasiya Toenjes,&nbsp;Annika Bohlen,&nbsp;Thomas Seefeld","doi":"10.1002/adem.202502234","DOIUrl":"10.1002/adem.202502234","url":null,"abstract":"<p>Laser metal deposition (LMD) offers high flexibility in material selection. However, processing high-strength aluminum alloys, like EN AW-7075, remains challenging due to limited weldability and the evaporation of volatile alloying elements. In this work, solidification cracking is mitigated through grain refinement using TiC nanoparticle as nuclei. The evaporation of zinc and magnesium compromises precipitation-hardening and solid-solution-hardening capacity and thus mechanical properties. This issue is addressed by in situ and ex situ powder blending with additional high Zn and Mg powders, such as ZnAl12 and AZ91. LMD of EN AW-7075 results in losses of up to 65% Zn and 60% Mg, while EN AW-5083 shows Mg losses of up to 35%. It is found that the majority of the additional Zn and Mg powders is lost through evaporation, necessitating increased additions. With an addition of 10% ZnAl12 and 5% AZ91, the EN AW-7075 samples reach a composition according to the standard and are suitable for a heat treatment following T6. With an addition of 10% AZ91, the EN AW-5083 samples reach a composition desired composition. This strategy highlights the potential for extending the range of processable aluminum alloys in additive manufacturing and opens pathways for the application of high-strength alloys, such as EN AW-7075.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 7","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202502234","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696275","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":"Enabling Digital Continuity in Virtual Manufacturing for Eco-Efficiency Assessment of Lightweight Structures by Means of a Domain-Specific Structural Mechanics Language: Requirements, Idea and Proof of Concept","authors":"Martin Rädel,&nbsp;Andreas Schuster,&nbsp;Felix Schoenitz,&nbsp;Jean Lefèvre","doi":"10.1002/adem.202501777","DOIUrl":"10.1002/adem.202501777","url":null,"abstract":"<p>Virtual product development involves a wide range of specialized assessment tools, each tailored to specific physical phenomena and modeling requirements. A formalized, yet flexible, way to establish interfaces between these tools is required for their efficient use in automated virtual product development processes. This document presents a novel approach for the interaction of different assessment capabilities in a virtual product development process based on a solver-agnostic domain-specific language (DSL) for computational structural mechanics problems. The proposed system enables seamless integration with various assessment capabilities and solvers. The DSL is designed to handle multiple numerical implementation methods, including finite element method, peridynamic, and others. The approach utilizes a hierarchical data model, separating mathematical, physical, mechanical, and simulation data into distinct containers, facilitating modularity and reusability. The DSL is derived from code in a Java-based backend Java mechanics suite and provides interfaces to external tools and solvers through plugins. Using this approach, it is shown how tools and data from different solver ecosystems and data formats can be seamlessly interacted in the structural assessment for the optimization of eco-efficiency key performance indicators in the manufacturing of lightweight structures.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 7","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202501777","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696401","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":"A Concept of a Digital and Traceable Manufacturing Documentation Based on Formalized Process Description Applied on Composite Aircraft Moveable","authors":"Björn Denker,&nbsp;Dominik Delisle,&nbsp;Christian Krombholz,&nbsp;Martin Rädel,&nbsp;Frank Dressel","doi":"10.1002/adem.202501737","DOIUrl":"10.1002/adem.202501737","url":null,"abstract":"<p>The documentation of component manufacturing has become an essential element of modern production, not only to meet customer requirements but also to support the analysis and optimization of production processes and component designs with respect to structural performance, economic efficiency, and sustainability. To enable effective interaction between different disciplines, standardized process descriptions as well as consistent information and data structures are required. Digital manufacturing instructions and process documentation based on standardized, formalized process descriptions and the automated acquisition of process data offer significant potential for robust and efficient manufacturing. In this context, a semantic data model ensures data consistency and enhances opportunities for process analysis and optimization. This contribution presents a method for the standardized digital documentation of a composite manufacturing process using a formalized process description. A digital life data sheet (LDS), combining manufacturing instructions and documentation, is implemented using Atlassian Confluence and applied to the production of a composite multispar movable of a long-range reference aircraft configuration. The usability of the developed LDS is evaluated, potential improvements are identified, and the underlying semantic data model is described.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 7","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202501737","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147685964","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":"Adjustment of Coatings Morphology and Particle Distribution of Layered Silicates by Freeze-Drying for Improved Gas Barriers","authors":"Joshua Lommes,&nbsp;Moritz Bätcher,&nbsp;Andrea Deißenberger,&nbsp;Volkmar Stenzel,&nbsp;Andreas Hartwig","doi":"10.1002/adem.202501350","DOIUrl":"10.1002/adem.202501350","url":null,"abstract":"<p>Freeze-drying of layered silicates modified with dodecylamine (DDA) is a highly effective technique for the preparation of barrier pigments that significantly mitigate the permeation of oxygen, water vapor, and hydrogen through polymer films containing these particles. In contrast to oven-dried modified silicates, the delamination of the particles is markedly enhanced. Additionally, the solvent used in the coating preparation is critical to the delamination and exfoliation processes. By applying Hansen solubility parameters, it is feasible to predict suitable solvents that facilitate these processes. The concentration of DDA employed for silicate modification influences the morphological characteristics of the particles. A maximum interlayer spacing of 2.15 nm is attained at a silicate-to-DDA weight ratio of 2.25:1. The permeation rates of oxygen, water vapor, and hydrogen through coatings devoid of particles, as well as those containing varying amounts of oven-dried and freeze-dried clay particles, are systematically investigated. The permeation is found to be minimal in systems incorporating freeze-dried particles, with a notable reduction by four orders of magnitude observed when compared to the coating without any filler. Notably, for hydrogen, even low concentrations (0.1–2%) of modified layered silicates also lead to a reduction of permeation by up to four orders of magnitude.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 7","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202501350","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696350","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":"Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy","authors":"Ogün Baris Tapar,&nbsp;David Osman Busse,&nbsp;Maximilian Sprengel,&nbsp;Domenico Furfari,&nbsp;Marc-André Nielsen,&nbsp;Guilherme Abreu Faria,&nbsp;Jérémy Epp","doi":"10.1002/adem.202501335","DOIUrl":"10.1002/adem.202501335","url":null,"abstract":"<p>Cold expansion is widely used in repairing and manufacturing rivet lap joints in the aerospace industry. However, it bears inherent disadvantages such as nonsymmetrical residual stress, considerable surface deformation, and tensile zones that may initiate cracks. Limited process flexibility makes it challenging to fully overcome these issues. Given its high penetration depth and flexible parameter adjustments, laser shock peening (LSP) may offer a promising alternative for treating rivet areas. To investigate the effects of LSP parameters on residual stresses, a systematic parameter study is conducted, involving extensive X-ray diffraction residual stress analyses and fatigue testing. Upon determining an optimal parameter matrix, fatigue tests are conducted on laser-peened, cold-expanded, and untreated samples. Subsequently, an energy dispersive synchrotron X-ray investigation is performed in order to understand the effect of LSP on residual stress evolution and the local material behavior in rivet lap joints. For this experiment, laser-peened, cold-expanded, and untreated samples are submitted to fatigue tests at defined cycles. The residual stress distribution around the rivet area is then analyzed for each sample to evaluate residual stress stability and changes post-loading. As a final step, fracture surface analyses are performed via optical and scanning electron microscopy.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 7","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202501335","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696360","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":"ECOMAT Special Issue: What Science and Industry Need to Turn Innovation into Reality","authors":"Anastasiya Toenjes,&nbsp;Hubertus Lohner,&nbsp;Bastian Müller,&nbsp;Michel Petkovic","doi":"10.1002/adem.70738","DOIUrl":"10.1002/adem.70738","url":null,"abstract":"&lt;p&gt;The aerospace industry stands at the threshold of a new era. New generations of spacecraft and new market players promise an unprecedented expansion into space, while the aviation sector faces increasing challenges regarding aircraft materials as it seeks to meet climate protection requirements amid continuously growing air traffic volumes.&lt;/p&gt;&lt;p&gt;Meeting these future demands will depend decisively on advances in high-performance and resource-efficient materials, low-emission propulsion systems, and lightweight design technologies. To ensure that these highly complex interrelationships successfully transition from research into industrial application, close integration between science and industry is essential—across disciplines and beyond traditional research boundaries. This special issue focuses precisely on these challenges, presenting current research in advanced materials, testing methodologies, and sustainable manufacturing approaches for aerospace applications.&lt;/p&gt;&lt;p&gt;A successful example of such integration is the Research and Technology Center ECOMAT in Germany's smallest federal state: Bremen. This northern German city is one of Europe's leading aerospace hubs, home to major industry players such as Airbus, OHB, and ArianeGroup, as well as a broad scientific landscape comprising more than 50 research institutes and eight universities. Internationally renowned research organizations, including the German Aerospace Center (DLR), Fraunhofer, and Leibniz Association, operate several industry-relevant institutes here.&lt;/p&gt;&lt;p&gt;Since 2019, ECOMAT has pursued a distinctive approach: bringing all key stakeholders together under one roof. The center accommodates ≈500 researchers in a state-of-the-art facility designed specifically for advanced research. Its technical center includes specialized infrastructure such as a cryogenic laboratory, a hot isostatic press, CFRP robotics systems, extrusion equipment, and computed tomography systems. In addition, office and laboratory spaces are designed to enable short distances and direct interaction between industry and academia.&lt;/p&gt;&lt;p&gt;More than just a physical location, ECOMAT represents a community. Around 20 partner organizations combine their expertise and resources in joint research and industrial projects. Collaborative research initiatives foster new networks that extend beyond the building itself, with partnerships continuing at the respective headquarters of the participating companies and institutes. Regular technical symposia held in the ECOMAT auditorium further enhance this culture of innovation, complemented by partnerships with international research centers in the Netherlands and Japan.&lt;/p&gt;&lt;p&gt;In this special issue, we present selected outcomes of these research activities. They address key development trends in aerospace as well as in sustainable materials and technologies. One example is TIRIKA – several contributions in this issue present results from the research project short for “Tech","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 7","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adem.70738","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147687015","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":"Process-Informed Analysis of As-Built Metal Additive Surface Features","authors":"Theresa Buchenau,&nbsp;Adam Thompson,&nbsp;Hauke Brüning,&nbsp;Marc Amkreutz,&nbsp;Bernd Mayer,&nbsp;Samanta Piano","doi":"10.1002/adem.202501743","DOIUrl":"10.1002/adem.202501743","url":null,"abstract":"<p>Additive manufacturing (AM) technologies show potential for the development of functionally integrated lightweight designs, biomimetic structures and material savings. Typically, as-built surfaces show powder particle agglomerations and re-entrant features, leading to rough surfaces, which are associated with poor fatigue performance. To benefit from the full range of advantages with special focus on aerospace applications, critical features for crack initiation when subjected to fatigue loading need to be identified and mitigated. A first step towards achieving this goal is the surface texture characterisation based on the quantification of surface features. In this paper, selected areal height, functional and feature parameters from ISO 25178-2:2022 are generated and process-specific features are examined for as-built AlSi7Mg0.6 from laser-based powder bed fusion. A connection with the particle size distribution of the used powder is demonstrated. This direct incorporation of manufacturing variables into the characterisation of surface texture in metal AM is a novel approach in the field.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 7","pages":""},"PeriodicalIF":3.3,"publicationDate":"2026-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202501743","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147696303","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}