{"title":"A lightweight, supercompressible and superelastic aramid nanofiber/nanocellulose-derived carbon aerogel with in-plane micro-wrinkle honeycomb structure for thermal insulation","authors":"Yuying Ma, Ruixiang Liu, Ying Lei, Chunzu Cheng, Wei Wang, Tianyi Wang, Leixin Yang, Dengkun Shu, Long Jiao, Shuo Yang, Bowen Cheng","doi":"10.1016/j.jmst.2024.12.063","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.063","url":null,"abstract":"Nanofiber carbon aerogels with 3D interconnected microfibrillar networks exhibit fascinating physical properties and present great application potential. However, it is still a challenge to fabricate superelastic nanofiber carbon aerogels owing to their extremely dilute brittle interconnections and poor fiber toughness after carbonization. Herein, aramid nanofibers (ANF)/nanocellulose (CNF) dual-fibrous carbon aerogels are prepared, which exhibited supercompressibility and superelasticity due to the \"skeleton-binder\" synergistic effect of ANF and CNF and the design of in-plane micro-wrinkle honeycomb structure. The \"skeleton-binder\" synergistic effect improves interfacial interactions of nanofibers and optimizes the stress distribution of carbon aerogel. The highly ordered honeycomb structure with in-plane microwrinkles, formed by the bidirectional freezing and the difference in volume shrinkage during the carbonization between CNFs and ANFs, endows the CNF/ANF carbon aerogel with negative Poisson's ratio and high energy absorption capacity. These strategies significantly improve the overall mechanical properties of ANF/CNF carbon aerogel including the elasticity and fatigue resistance. As a result, the ultralight carbon aerogel (3.46 mg/cm<sup>3</sup>) exhibits excellent supercompression (undergoing an extreme strain of 95%) and elasticity (a stress retention up to 81.38% at 90% strain with 500 cycles and 96.15% at 50% strain with 10000 cycles). The nanofiber carbon aerogel shows excellent multifunctional properties in flexible piezoresistive sensor and anisotropic thermal insulation materials, including a desirable sensitivity (as high as 48.74 kPa<sup>−1</sup>) and an instant response time (∼40 ms), an anisotropy factor of 3.69 and an ultralow radial thermal conductivity (0.012 W m<sup>−1</sup> K<sup>−1</sup>). These properties make dual-fibrous carbon aerogels highly attractive in pressure sensors and thermal management applications.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"66 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143495882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"One-step approach for constructing synergistic effect-based high-performance bifunctional catalysts toward green hydrogen production","authors":"Wansen Ma, Jinshuai Fei, Chao Chen, Liwen Hu, Xuewei Lv, Jie Dang","doi":"10.1016/j.jmst.2024.12.054","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.054","url":null,"abstract":"The simplification of the process of electrolytic water catalyst preparation and the exploitation of highly active catalysts represent a meaningful but challenging task. Meanwhile, bifunctional electrolytic water catalysts are of great significance in improving electrolysis efficiency and simplifying catalyst preparation processes. In this study, we introduce Ru and V into CoTe, which exhibits intrinsic oxygenophilic properties, and couple it with hydrophilic and well-conducting MXene to overcome the sluggish alkaline kinetics of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The synthesized Ru,V co-doped CoTe@MXene (RVCTM) catalysts exhibited HER overpotentials of 34 and 116 mV and OER overpotentials of 249 and 320 mV at 10 and 100 mA cm<sup>−2</sup> current densities, respectively. Moreover, the catalysts demonstrated remarkable stability. Theoretical calculations demonstrated that the incorporation of Ru and V had a profound impact on the local electronic environments of Co and Te. In addition, the coupling with MXene resulted in charge redistribution at the heterogeneous interface. The combined effect of doping and heterostructure construction effectively optimizes the d-band center of the catalyst and reduces the adsorption energy barrier of reaction intermediates. This approach offers deep insights into the development of multifunctional catalysts.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"5 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143486410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Engineering d-band center of Mn to strengthen Mn–O bonding for long cycle life zinc-ion battery","authors":"Xinyu Yu, Ziyi Zhang, Xinya Chen, Lixia Bao, Jiong Peng, Xin Li","doi":"10.1016/j.jmst.2024.12.061","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.061","url":null,"abstract":"MnO<sub>2</sub> has emerged as one of the favored cathode materials for aqueous zinc ion batteries (AZIBs) due to its high theoretical capacity and abundant crystalline structures. However, MnO<sub>2</sub> cathode generally suffers from poor electrical conductivity and rapid capacity degradation due to unavoidable manganese dissolution during cycling, limiting their further utilization. In this study, we modify the d-band center of Mn by introducing non-precious metal Bi atoms into the MnO<sub>2</sub> system, thereby strengthening the Mn–O bonding to inhibit manganese dissolution. Theoretical calculations reveal that the d-band center of Mn in Bi-MnO<sub>2</sub> shifts upward, promoting electron transfer from O 2p orbitals to Mn–O bonding orbitals. This enhances the Mn–O bond strength, stabilizing Mn atoms in the crystal lattice and reducing manganese solvation loss. As a result, the conductivity and cyclic stability of Bi-MnO<sub>2</sub> are significantly improved. The results demonstrate that Bi-MnO<sub>2</sub> exhibits outstanding electrochemical properties, with a capacity of 392.3 mAh g<sup>−1</sup> after 100 cycles at 0.2 A g<sup>−1</sup> and a capacity retention of 83.25% after 5000 cycles at 1.0 A g<sup>−1</sup>. This study presents a new approach to address the manganese dissolution issue, which could further advance the application of d-band center theory in MnO<sub>2</sub> materials.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"27 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143486408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qingling Liu, Dongmei Liang, Jie Xiong, Xiunan Cai, Zuqiang Huang, Tao Gan, Huayu Hu, Yanjuan Zhang
{"title":"Bi2WO6/spontaneously polarized ceramic‒g-C3N4 heterojunction with dynamic cascade electric fields to deplete unilaterally accumulated charges and break carrier shielding effect for boosting piezo-photocatalysis","authors":"Qingling Liu, Dongmei Liang, Jie Xiong, Xiunan Cai, Zuqiang Huang, Tao Gan, Huayu Hu, Yanjuan Zhang","doi":"10.1016/j.jmst.2025.02.004","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.02.004","url":null,"abstract":"In photocatalysis field, S-scheme heterojunctions show unique advantages and prospects. However, the carrier shielding effect of heterojunctions limits the separation and migration of interfacial charges. In this study, a strategy of “dynamic cascade electric fields to deplete unilaterally accumulated charges” was innovatively proposed to overcome this drawback. By modulating g-C<sub>3</sub>N<sub>4</sub> (CN) and Bi<sub>2</sub>WO<sub>6</sub> (BWO) using the polarized electric field (PEF) of spontaneously polarized ceramic (SPC), a BWO/SPC-CN composite with cascade internal electric field (IEF) and PEF was successfully constructed for efficient piezo-photocatalytic degradation of recalcitrant pollutants. BWO/SPC-CN contributed to 96.8% degradation of carbamazepine, significantly surpassing BWO/CN (70.5%). BWO/SPC-CN performed excellent capacity of harvesting piezoelectric energy due to its unique three-dimensional porous nano-network structure. The PEF of SPC modulated the electronic band structure and thus strengthened the IEF of BWO/SPC-CN, providing a persistent driving force for interfacial charge migration. Moreover, SPC with a strong PEF unilaterally consumed the charges accumulated on CN under periodic piezoelectricity, weakening the shielding electric field to inhibit the recombination of electron‒hole pairs. As a consequence, the dynamic cascade PEF–IEF ultimately broke the carrier shielding effect in heterojunction photocatalysis and enhanced interfacial electron transfer. This work provides reliable methods to enhance the interfacial charge transfer in heterojunction and new insights into piezo-photocatalytic mechanism.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"22 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143486411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marco Negozio, Sara di Donato, Riccardo Pelaccia, Adrian H.A Lutey, Daniele Carosi, Barbara Reggiani, Alessandro Morri, Lorenzo Donati
{"title":"Impact of die design and bearing geometry on grain size and PCG formation during extrusion of AA6082 aluminum alloy","authors":"Marco Negozio, Sara di Donato, Riccardo Pelaccia, Adrian H.A Lutey, Daniele Carosi, Barbara Reggiani, Alessandro Morri, Lorenzo Donati","doi":"10.1016/j.jmst.2025.01.017","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.01.017","url":null,"abstract":"Grain size and formation of the Peripheral Coarse Grain (PCG) defect influence the mechanical and crash properties of extruded profiles. Controlling microstructural evolution during the extrusion of 6<em>XXX</em> series aluminum alloys is therefore essential to ensure the performance of structural components. In this work, three profiles with the same nominal geometry were extruded with a die comprising three different bearing geometries to create different extrusion conditions. Each profile was analyzed experimentally to gather data on the microstructure and mechanical properties. Bulge testing revealed that Profile 2, with the thickest PCG layer (490–1150 µm), exhibited worse mechanical performance, with a hoop strain at fracture of 0.08 and a peak load of 51.5 kN, compared to Profiles 1 and 3, which had higher hoop strains (0.13 and 0.14) and peak loads (56.1 and 57.6 kN, respectively). Finite Element Method (FEM) simulations of the extrusion process were carried out using Qform Extrusion UK with a post-processing subroutine developed and implemented to calculate additional parameters such as the stored energy, percentage dynamic recrystallization, grain size, and PCG formation based on standard output parameters from the simulation including strain, temperature and strain rate. The simulation demonstrated that the highest strain rate (40–220 s⁻¹) and stored energy (150,000–440,000 J m⁻³) in Profile 2 led to the thickest PCG layer. Based on these results, the proposed predictive model was validated against experimental data, demonstrating high accuracy in predicting PCG thickness and grain size while effectively capturing the influence of process parameters on microstructural evolution.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"45 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143486409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tailoring the corrosion resistance and biological performance of Mg-Zn-Y-Nd bioimplants with multiphasic, pore-sealed cerium-doped ceramic coatings via facile one-pot plasma electrolytic oxidation","authors":"Chaochao Zhao, Min Wen, Qiaoli Wang, Wentai Ouyang, Daokui Xu, Zhaojun Jia, Yufeng Zheng, Tingfei Xi, Liyuan Sheng","doi":"10.1016/j.jmst.2025.01.016","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.01.016","url":null,"abstract":"Magnesium alloys have illustrated great promise for building biodegradable implantable devices due to their unique combination of biocompatibility, mechanical properties, and degradable absorption characteristics. However, the uncontrollably fast degradation in physiological environments remains a humongous challenge restraining their clinical application, requiring engineering strategies such as surface modification for biocorrosion and biofunctionality optimization. Herein, CeO<sub>2</sub> nanoparticle-doped plasma electrolytic oxidation (PEO) coatings were applied to surface modify a novel Mg-Zn-Y-Nd alloy. During the PEO process, nanocrystal CeO<sub>2</sub> nanoparticles, alongside the newly formed secondary corrosion-resistant (CePO<sub>4</sub>) phase, sealed the micropores of the PEO coatings under discharge, affording enhanced barrier effects against biocorrosion. Electrochemical tests in Hank's solution showed a remarkable increase in corrosion potential and charge transfer resistance and a decrease in corrosion current density. Further characterization showed that a dense anti-corrosion coating of Mg(OH)<sub>2</sub>/CeO<sub>2</sub>/Ce(OH)<sub>3</sub> was formed, effectively limiting the attacks of corrosive mediums and ensuring controlled degradation. The coating-functionalized implants, as reveled <em>in vitro</em> and <em>in ovo</em>, were compatible with NIH3T3 fibroblasts, HUVECs, red blood cells, and chick chorioallantoic membranes, with even enhanced pro-healing effects in scratch-based wound models. Overall, this work highlights the potential of CeO<sub>2</sub>-doped PEO coatings to fine-tune the corrosion resistance and biocompatibility of Mg-Zn-Y-Nd alloys for biomaterial implants.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"35 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143486415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dielectric-mechanical couple effect of COF cyanate derived from dual functions of molecular interaction and chain entanglement","authors":"Feifan Cai, Ruoyu Chen, Qichao Dong, Wansong Gu, Kai Zheng, Longjiang Deng, Hetao Chu","doi":"10.1016/j.jmst.2024.12.062","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.062","url":null,"abstract":"The rapid advancement of radar and 5G communication technologies has created an urgent need for materials that possess both low dielectric constants and superior mechanical strength to ensure efficient signal transmission and minimal loss. Herein, a synergistic effect of multiple regulation strategies from the atomic scales to the molecular scales was proposed to develop Covalent Organic Frameworks (COFs) modified cyanate ester resins (COF-mCE). The strategy has proven highly effective in enhancing both dielectric and mechanical properties. With only 3 wt% COFs, the dielectric constant of COF-mCE is reduced from 3.32 to 2.84 at 1 MHz. Meanwhile, the mechanical performance of COF-mCE composites exhibits substantial improvements, with flexural strength increasing by 42.6% and tensile strength by 52.1% compared to pure mCE. The investigation explores that hydrogen bonding and π-π stacking interactions restrain the polarization feature and the mechanical property improvements of the COF-mCE derived from the entanglement effect of COF-polymer chains. Furthermore, the 3D-printed COF-mCE honeycomb structure demonstrates excellent electromagnetic wave transmittance and low reflectance, achieving a transmittance of 94.1% at 10 GHz with a 60° incidence angle. This multi-scale design strategy offers new insights into the development of low-<em>k</em> dielectric material for next-generation electronic science applications.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"51 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143486417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhipeng Liu, Bin Hu, Na Wang, Xiao Shen, Cancan Ding, Wenwen Song, Peter K. Liaw, Haiwen Luo
{"title":"Hierarchical precipitation in a partially recrystallized matrix makes an ultrastrong and ductile lightweight steel","authors":"Zhipeng Liu, Bin Hu, Na Wang, Xiao Shen, Cancan Ding, Wenwen Song, Peter K. Liaw, Haiwen Luo","doi":"10.1016/j.jmst.2024.12.059","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.059","url":null,"abstract":"Structural components usually require inexpensive materials with ultrahigh strength, large ductility, and low density, which are still lacking and being searched. We hereby develop a partially recrystallized (Rexed) low-density steel having unprecedentedly ultrahigh specific yield strength and large ductility at the same time. The former results from both dislocation hardening in unRexed grains and the significant precipitation hardening of <em>κ</em>-carbides having the sizes of several, tens of and hundreds of nanometers in the Rexed, unRexed grains and at boundaries, respectively. Particularly, the <em>κ</em>-carbides within Rexed grains can grow toward the critical sizes for the maximum cutting-through precipitation hardening during the optimal ageing process, which can be guided by ab initio calculations; consequently, the strength difference between the Rexed and unRexed grains is minimized so that they can deform more compatibly. In addition, the presence of ductile precipitation-free zones close to the discrete intergranular <em>κ</em>-carbides reduces the tendency to the brittle intergranular cracking. A nearly half Rexed microstructure may provide the possibly largest quantity of Rexed/unRexed grain boundaries for the maximum hetero-deformation-induced strain-hardening, contributing to large ductility. Therefore, we propose that such a hierarchical precipitation in a nearly half Rexed matrix may be a new microstructural strategy for manufacturing ultrastrong lightweight alloys.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"21 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143473478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zicheng Sa, Shang Wang, He Zhang, Jiayun Feng, Haozhe Li, Jingxuan Ma, Xudong Liu, Qing Sun, Yanhong Tian
{"title":"Anchoring sulfur migration to mitigate Kirkendall voids in nano-twinned copper interconnections for robust and reliable packaging","authors":"Zicheng Sa, Shang Wang, He Zhang, Jiayun Feng, Haozhe Li, Jingxuan Ma, Xudong Liu, Qing Sun, Yanhong Tian","doi":"10.1016/j.jmst.2024.12.057","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.057","url":null,"abstract":"Nano-twinned copper (nt-Cu), with a preferred orientation, is highly promising as interconnect materials in high-density advanced packaging due to its considerable mechanical strength, excellent electrical conductivity, and resistance to thermal migration. However, its application is impeded by sulfur-containing byproducts from the electroplating process, exacerbating the formation of Kirkendall voids within solder joints during thermal aging. Herein, through the incorporation of Zinc (Zn) into the nt-Cu layer, we develop a nt-Cu/Zn composite structure. Our findings provide the first definitive confirmation of the mechanism by which sulfur atoms migrate to the Cu<sub>3</sub>Sn/nt-Cu interface through interstitial diffusion, thereby reducing the activation energy for vacancy formation. We further demonstrate that Zn effectively anchoring sulfur atoms, forming ZnS within the nt-Cu layer during heat treatment, which increases the vacancy formation energy and inhibits the development of Kirkendall voids. Remarkably, no Kirkendall voids are observed in the modified interconnects even after prolonged aging at 150°C for 1000 h. The nt-Cu/Zn composite metallization layers significantly decrease the growth rate of interfacial intermetallic compounds by 33.6% and enhance the shear strength of solder interconnections to 228.9%. This research underscores the potential of nt-Cu in advanced electronic packaging, offering new pathways for improving the power density and reliability of electronic devices.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"2 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143473479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiao-Jing Ji, Kun Yang, Sheng-Lian Yao, Haijun Zhang, Ke-Wei Gao, Zhang-Zhi Shi, Dake Xu, Lu-Ning Wang
{"title":"High−toughness Zn-Mn-Ca alloys as potential materials for intestinal implants","authors":"Xiao-Jing Ji, Kun Yang, Sheng-Lian Yao, Haijun Zhang, Ke-Wei Gao, Zhang-Zhi Shi, Dake Xu, Lu-Ning Wang","doi":"10.1016/j.jmst.2024.12.053","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.053","url":null,"abstract":"There have been many studies on the perspective Zn alloys for bone implants, but few for intestinal applications. Zn-0.4Mn-<em>x</em>Ca (<em>x</em> = 0, 0.05 and 0.1 wt.%) alloys are developed in this work for intestinal applications, in order to make use of proliferation effects of Mn and Ca elements on intestinal probiotics and epithelial cells. Rat small intestinal crypt epithelial (IEC-6) cells can grow healthily on surfaces of all the alloys. Among them, the number of healthy cells on Zn-0.4Mn-0.1Ca is the largest. IEC-6 cell viability is over 160% (much higher than the benchmark of 75%) in 20%–100% extracts of Zn-0.4Mn-0.1Ca for 5 d. All the alloys can promote proliferation of <em>Lactobacillus acidophilus</em> (intestinal probiotic) and inhibit growth of <em>Escherichia coli</em> (intestinal pathogen). Among them, Zn-0.4Mn-0.1Ca alloy possesses the greatest effect. With the increase of Ca content, the strength of the alloy increases. Zn-0.4Mn-0.1Ca alloy has the highest strength and good plasticity among the three alloys. It exhibits a yield strength of 252 MPa, an ultimate tensile strength of 288 MPa, and a elongation to failure of 41%. Since CaZn<sub>13</sub>-MnZn<sub>13</sub>-Zn micro-cell controls corrosion rate, Zn-0.4Mn-0.1Ca with the highest volume fractions of MnZn<sub>13</sub> and CaZn<sub>13</sub> has the highest corrosion rate of 17.64 μm/year when immersed in simulated intestinal fluid for 28 d. Overall, the Zn-Mn-Ca alloys are promising candidates for intestinal implants.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"8 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}