Rare Metals最新文献

{"title":"A crystalline Sm(III)-containing antimonotungstate with efficient catalytic activity in three-component reaction for isoindolinones synthesis","authors":"Hao-Qi Liu,&nbsp;Jia-Wei Cao,&nbsp;Wei Tang,&nbsp;Zhou-Fu Lin,&nbsp;Ke Li,&nbsp;Wei-Jian Xu,&nbsp;Zhi-Bin Zhang,&nbsp;Yu-Feng Liu,&nbsp;Guo-Ping Yang","doi":"10.1007/s12598-024-03179-6","DOIUrl":"10.1007/s12598-024-03179-6","url":null,"abstract":"<div><p>The development of the three-component catalytic system for constructing isoindolinones from simple feedstocks is both significant and challenging. In this study, a unique tartrate-linked dimeric samarium-antimonotungstate [Sm₂(H₂O)₆(tar)(Sb₂W₂₁O₇₂)]₂²⁰⁻ (<b>Sm</b>_<b>4</b><b>tar</b>_<b>2</b>, H₄tar = tartaric acid) was synthesized via a one-step method at room temperature using an acetate buffer solution. The dimeric polyanion of <b>Sm</b>_<b>4</b><b>tar</b>_<b>2</b> shows a centrosymmetric structure with a parallelogram-like arrangement and comprises two enantiomeric {Sm₂(H₂O)₆(Sb₂W₂₁O₇₂)} moieties connected by two enantiomeric tar ligands. <b>Sm</b>_<b>4</b><b>tar</b>_<b>2</b> demonstrates efficient catalytic activity in the three-component reaction involving 2-acylbenzoic acids, primary amines, and phosphine oxides to form 3,3-disubstituted isoindolinones. The advantages of this catalytic system include simple feedstocks, green and reusable catalyst, and operational simplicity with water as the sole by-product. This finding enables an effective molecular fragment assembly strategy for synthesizing isoindolinone drug precursor skeletons.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"3995 - 4002"},"PeriodicalIF":9.6,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938599","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":"Monoatomic metalloporphyrinoid catalysts for efficient oxygen reduction","authors":"Ying Yao,&nbsp;Xiao-Ting Chen,&nbsp;Xinyuan Zhang,&nbsp;Shangbin Jin,&nbsp;Zhihong Tian,&nbsp;Guoliang Li,&nbsp;Li-Ming Yang","doi":"10.1007/s12598-024-03151-4","DOIUrl":"10.1007/s12598-024-03151-4","url":null,"abstract":"<div><p>In this research, we present a comprehensive investigation on the catalyst screening, reaction mechanism, and electrocatalytic properties of two-dimensional monoatomic metalloporphyrinoid (MPor) materials for the oxygen reduction reaction (ORR). Through a combination of high-throughput screening, first-principles DFT calculations, and molecular dynamics simulations, we uncovered some promising oxygen reduction catalysts with limiting potentials of 0.60, 0.57, 0.56 V under acidic medium, and −0.17, −0.20, −0.21 V under basic medium for M = Co, Fe, Mn, respectively. Full reaction pathway search demonstrates that CoPor is a special case with 2e^– and 4e^– paths under both acidic and basic media, and for FePor and MnPor, only 4e^– path is viable. In-depth analyses indicate that the adsorption free energy of OH and limiting potential shows the volcano curve relationship, which can guide the design and optimization of the ORR catalysts. The crystal orbital Hamiltonian population (COHP) between M and O in O₂-MPor can well explain why only CoPor has a 2e^– path, while other metals do not, because the Co–O bond is much weaker compared to other M–O bonds. Our research will shed some insights on designing efficient ORR catalysts, and stimulate the experimental efforts in this direction.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"3920 - 3933"},"PeriodicalIF":9.6,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938600","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 L21 strengthening in lightweight AlFeNiTiV complex concentrated alloys for elevated-temperature applications","authors":"Hong-Mei Chen,&nbsp;Ze-Yun Cai,&nbsp;Jie Chen,&nbsp;Jun-Zhi Li,&nbsp;Tao Hong,&nbsp;Wei-Zong Bao,&nbsp;Guo-Qiang Xie","doi":"10.1007/s12598-025-03241-x","DOIUrl":"10.1007/s12598-025-03241-x","url":null,"abstract":"<div><p>Complex concentrated alloys (CCAs) containing the L2₁ phase are recognized for their exceptional strength and thermal stability, positioning them as strong candidates for transformative applications in aerospace, energy, and structural sectors. This investigation delves into the AlFe_<i>x</i>NiTiV_{40−<i>x</i>} (<i>x</i> = 0, 10, 20, 30, 35, 40; at%) CCAs, aiming to unlock the synergistic potential of BCC and L2₁ phases. By conducting an in-depth analysis of microstructure, phase behavior, and mechanical properties, the intricate relationships between chemistry, structure, and properties are illuminated within this alloy system. The Al₁₅Fe₃₅Ni₃₀Ti₁₅V₅ alloy demonstrates remarkable mechanical properties, achieving a yield strength of 2140.9 MPa and ultimate compressive strength of 2699.7 MPa, primarily through solid solution strengthening and precipitation hardening. Notably, its low lattice mismatches and nanoprecipitate strengthening yield an impressive specific yield strength at 600 °C (245.2 MPa(g·cm⁻³)⁻¹). Phase modulation achieves the synergistic optimization of specific strengths at both room and high temperatures in CCAs containing the L2₁ phase, opening new avenues for designing advanced lightweight and high strength alloys for elevated-temperature applications.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3479 - 3495"},"PeriodicalIF":9.6,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861135","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":"The synergistic inhibition of the growth of intermetallic compounds at Sn-0.7Cu/Cu interface by Al and Pt","authors":"An-Cang Yang,&nbsp;Yao-Ping Lu,&nbsp;Bin Zhang,&nbsp;Yong-Hua Duan,&nbsp;Li-Shi Ma,&nbsp;Shan-Ju Zheng,&nbsp;Ming-Jun Peng,&nbsp;Meng-Nie Li,&nbsp;Zhi-Hang Xu","doi":"10.1007/s12598-024-03200-y","DOIUrl":"10.1007/s12598-024-03200-y","url":null,"abstract":"<div><p>The construction of intermetallic compounds (IMCs) connection layers with special compositions by adding small amounts of alloying elements has been proven to be an effective strategy for improving the reliability of electronic component interconnect. However, the synergistic effect mechanism of multi-component alloy compositions on the growth behavior of IMCs is not clear. Herein, we successfully prepared a new quaternary alloy solder with a composition of Sn-0.7Cu-0.175Pt-0.025Al (wt%) using the high-throughput screening (HTS) method. The results showed that it possesses excellent welding performance with an inhibition rate over 40% on the growth of IMCs layers. For Cu₆Sn₅, the co-doping of Al and Pt not only greatly improves its thermodynamic stability, but also effectively suppresses the phase transition. Meanwhile, the co-doping of Al and Pt also significantly delays the generation time of Kirkendall defects. The substitution sites of Al and Pt in Cu₆Sn₅ have been explored using atomic resolution imaging and advanced data informatics, indicating that Al and Pt preferentially substitute Sn and Cu atoms, respectively, to generate (Cu, Pt)₆(Sn, Al)₅. A one-dimensional (1D) kinetic model of the IMCs layer growth at the Sn solder/Cu substrate interface was derived and validated, and the results showed that the error of the derived mathematical model is less than 5%. Finally, the synergistic mechanism of Al and Pt co-doping on the growth rate of Cu₆Sn₅ was further elucidated. This work provides a feasible route for the design and development of multi-component alloy solders.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"4208 - 4225"},"PeriodicalIF":9.6,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938464","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":"Molten salts assisted synthesis of single crystalline NCM811 with surface modification for high energy density lithium-ion batteries","authors":"Bi-Fu Sheng,&nbsp;Jun-Jie Lu,&nbsp;Zhe-Fei Sun,&nbsp;Min-Feng Chen,&nbsp;Min Xu,&nbsp;Han-Rui Zhao,&nbsp;Qing-Qing Zhou,&nbsp;Chu-Yang Li,&nbsp;Bin Wang,&nbsp;Qiao-Bao Zhang,&nbsp;Ji-Zhang Chen,&nbsp;Xiang Han","doi":"10.1007/s12598-024-03199-2","DOIUrl":"10.1007/s12598-024-03199-2","url":null,"abstract":"<div><p>Single crystalline nickel rich Li [Ni_<i>x</i>Co_<i>y</i>Mn_1-x–y]O₂ (SCNCM) layered oxide cathodes show higher ionic conductivity and better structure integrity than polycrystalline NCM (PCNCM) cathodes by eliminating grain boundaries. However, it remains challenges in the controlled synthesis process and restricted cycling stability of SCNCM. Herein, take single crystalline nickel rich Li [Ni_0.8Co_0.1Mn_0.1]O₂ (SC811) as an example, a dual molten salts (LiOH and Li₂SO₄) assisted secondary calcination method is proposed, for which LiOH salt improves primary crystal size and Li₂SO₄ prevents the aggravation of NCM nanocrystals. To further reduce the interfacial side reactions, Mg-doping and B-coating surface modification was carried out, which effectively suppress anisotropic lattice changes and Li/Ni disorder. In addition, a thin and uniform H₃BO₃ coating effectively prevents direct contact between the electrode and electrolyte, thus reducing harmful parasitic reactions. The single crystal structure engineering and surface modification strategy of oxide layered cathodes significantly improve the cycling stability of the modified SC811 cathode. For example, during a long-term cycling of 470 cycles, a high-capacity retention of 74.2% obtained at 1C rate. Our work provides a new strategy for engineering high energy nickel rich layered oxide NCM cathodes.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"3749 - 3760"},"PeriodicalIF":9.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938541","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":"Capacitance decay mechanism of vanadium nitride supercapacitor electrodes in KOH electrolytes","authors":"Xiu-Li Li,&nbsp;Hao Song,&nbsp;Yong-Hui Zhang,&nbsp;Yu-Lei Ren,&nbsp;Qi-Fei Guo,&nbsp;Zi-Huan Tang,&nbsp;Zhuo Li,&nbsp;Biao Gao,&nbsp;Paul K. Chu,&nbsp;Kai-Fu Huo","doi":"10.1007/s12598-025-03245-7","DOIUrl":"10.1007/s12598-025-03245-7","url":null,"abstract":"<div><p>Vanadium nitride (VN) is a promising pseudocapacitive material due to the high theoretical capacity, rapid redox Faradaic kinetics, and appropriate potential window. Although VN shows large pseudocapacitance in alkaline electrolytes, the electrochemical instability and capacity degradation of VN electrode materials present significant challenges for practical applications. Herein, the capacitance decay mechanism of VN is investigated and a simple strategy to improve cycling stability of VN supercapacitor electrodes is proposed by introducing VO₄³⁻ anion in KOH electrolytes. Our results show that the VN electrode is electrochemical stabilization between −1.0 and −0.4 V (vs. Hg/HgO reference electrode) in 1.0 M KOH electrolyte, but demonstrates irreversible oxidation and fast capacitance decay in the potential range of −0.4 to 0 V. In situ electrochemical measurements reveal that the capacitance decay of VN from −0.4 to 0 V is ascribed to the irreversible oxidation of vanadium (V) of N–V–O species by oxygen (O) of OH⁻. The as-generated oxidization species are subsequently dissolved into KOH electrolytes, thereby undermining the electrochemical stability of VN. However, this irreversible oxidation process could be hindered by introducing VO₄³⁻ in KOH electrolytes. A high volumetric specific capacitance of 671.9 F·cm⁻³ (1 A·cm⁻³) and excellent cycling stability (120.3% over 1000 cycles) are achieved for VN nanorod electrode in KOH electrolytes containing VO₄³⁻. This study not only elucidates the failure mechanism of VN supercapacitor electrodes in alkaline electrolytes, but also provides new insights into enhancing pseudocapacitive energy storage of VN-based electrode materials.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"3909 - 3919"},"PeriodicalIF":9.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938544","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":"Enhanced strain of BiFeO3-BaTiO3 relaxor ferroelectrics ceramics: domain structure evolution induced by electric-fields and temperature","authors":"Yi-Jin Hao,&nbsp;Xiao-Qi Gao,&nbsp;Yu-Cheng Tang,&nbsp;Le-Tian Xie,&nbsp;Hao-Yu Xu,&nbsp;Xiao-Xiao Zhou,&nbsp;Jin-Hao Hu,&nbsp;Huan Liu,&nbsp;He-Zhang Li,&nbsp;Bo-Ping Zhang","doi":"10.1007/s12598-024-03139-0","DOIUrl":"10.1007/s12598-024-03139-0","url":null,"abstract":"<div><p>The study of BiFeO₃-0.3BaTiO₃ ceramics has gained significant attention due to their high Curie temperature (<i>T</i>_C ≥ 450 °C) and excellent piezoelectric properties (<i>d</i>₃₃ ≥ 200 pC·N⁻¹). These are particularly pronounced near the morphotropic phase boundary (MPB) region where coexisting rhombohedral and pseudocubic (R-PC) phases are observed. In addition, as the BaTiO₃ content increases, BiFeO₃-BaTiO₃ ceramics gradually become dominated by a single pseudocubic (PC-) phase. This shift results in a decrease in piezoelectric properties but an enhancement in strain performance. However, the underlying mechanism remains unclear. The high strain properties observed in non-MPB compositions provide a motivation for further investigation into these mechanisms. This paper presents a detailed analysis of the electric-field and temperature-induced domain structure evolution in BiFeO₃-0.4BaTiO₃, which is predominately characterized by the PC phase. Piezoresponse force microscope (PFM) observations reveal the presence of nanodomains and stripy domains associated with polar nanoregions (PNRs), as well as relaxor ferroelectrics (RFEs) and/or ferroelectrics (FEs). The RFEs exhibit a significantly better strain response than the FEs, providing direct evidence for the enhanced strain properties of RFEs. Elevated-temperature Raman spectroscopy confirms a decrease in B-O bonding and BO₆ deformation, along with an increase in structural symmetry, indicating the formation of RFEs and/or PNRs. The phase diagram shows the Burns temperature (<i>T</i>_B), dielectric maxima temperature (<i>T</i>_m) and freezing temperature (<i>T</i>_f) evaluated from the dielectric spectra; the temperature-induced evolution of domain structures; and the sequential quasi-dielectric states: PNRs, RFEs and FEs. The evolution of the domain structure, including the morphology and ratio of FEs, RFEs and PNRs, induced by either electric-fields or temperature strongly affects the strain properties of RFEs. A superior piezoelectric coefficient of <i>d</i>₃₃^* = 533 pm·V⁻¹ at 40 kV·cm⁻¹ and a large electric strain of <i>S</i>_uni = 0.285% are obtained. These results further validate that domain modulation can effectively enhance the strain properties of BiFeO₃-BaTiO₃ ceramics, which makes them promising candidates for actuator applications.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 4","pages":"2661 - 2671"},"PeriodicalIF":9.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786456","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":"Construction of BiVO4/CdS Z-type heterojunction for sunlight-driven degradation of quinolone antibiotics","authors":"Wen-Wen Chen,&nbsp;Fang-Fang Huang,&nbsp;Qing-Yun Qu,&nbsp;Lei Li,&nbsp;Jian-Feng Jia,&nbsp;Ding-Sheng Wang,&nbsp;Ya-Dong Li","doi":"10.1007/s12598-024-03174-x","DOIUrl":"10.1007/s12598-024-03174-x","url":null,"abstract":"<div><p>Antibiotics are crucial medications for preventing and treating bacterial infections. However, due to their inherent resistance to degradation, they are also a major component of water pollutants. Semiconductor photocatalysis is considered to be an important green technology for sewage treatment. In this study, BiVO₄/CdS Z-type heterojunction was synthesized and applied in the photocatalytic degradation of tetracycline hydrochloride (TCH). The Z-type heterojunction not only facilitates the separation of photogenerated charges, but also preserves photogenerated electrons with strong reduction capability and photogenerated holes with high oxidation capability. Following visible light irradiation for 90 min, the efficiency of BiVO₄/CdS photocatalytic degradation of TCH reached 93.1%. Moreover, BiVO₄/CdS demonstrates notable degradation efficacy toward other quinolone antibiotics. Free radical trapping experiments and EPR test results suggest that superoxide radicals, hydroxyl radicals, photogenerated electrons, and holes serve as the primary active species in the photocatalytic degradation process of tetracycline hydrochloride. This study offers valuable insights into the development of Z-type heterojunction photocatalysts for the efficient degradation of tetracycline hydrochloride.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"3970 - 3980"},"PeriodicalIF":9.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938540","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":"Exceptional degradation of organic pollutant through piezoelectric photocatalysis and peroxymonosulfate activation in the designed Bi4O5Br2/BCZT S-scheme heterojunction","authors":"Feng Huang,&nbsp;Wen-Lin Wang,&nbsp;Gang Li,&nbsp;Muhammad Humayun,&nbsp;Qian Yu,&nbsp;Yan Wang,&nbsp;Chun-Dong Wang,&nbsp;Jing Wang","doi":"10.1007/s12598-024-03203-9","DOIUrl":"10.1007/s12598-024-03203-9","url":null,"abstract":"<div><p>Peroxymonosulfate (PMS) is commonly used in advanced oxidation processes to degrade organic pollutants in wastewater. In this work, to obtain better PMS activation efficiency, Bi₄O₅Br₂/BCZT (BBT) piezoelectric photocatalyst was designed. Abundant active radicals produced by BBT under visible light irradiation and ultrasonic vibration were used to activate PMS, thereby achieving rapid degradation of high concentration pollutants. With the introduction of BCZT, the catalyst has a strong internal electric field and three-dimensional lamellar structure, which promotes the separation and transfer of electrons and holes. It is worth noting that under optimal reaction conditions, the degradation rate of ARB reached 93% by BBT15 within 10 min. The catalytic experiment combined with the piezoelectric performance test results revealed the key role of piezoelectric photocatalytic reaction in PMS activation. This provides an important prospect for PMS to effectively deal with the degradation of high concentrations of organic pollutants.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"3981 - 3994"},"PeriodicalIF":9.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938542","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":"Relationship of grain size to the physicochemical properties and osteogenesis in magnesium–zinc–calcium alloys for bone implants","authors":"Shu-Quan Zhang,&nbsp;Jiang-Tao Feng,&nbsp;Zhi-Gang Cui,&nbsp;Ai-Min Zhang,&nbsp;Chao-Kun Tang,&nbsp;Ran Pang,&nbsp;Xing-Long Zhang,&nbsp;Chen-Guang Li,&nbsp;Feng-Xin Zhou,&nbsp;Feng Xue,&nbsp;Hao Wang,&nbsp;Jing-Yu Zhang,&nbsp;Qing-Hong Song,&nbsp;Min-Fang Chen,&nbsp;Bin Yao,&nbsp;Shao-Yuan Lyu,&nbsp;Bao-Shan Xu","doi":"10.1007/s12598-024-03160-3","DOIUrl":"10.1007/s12598-024-03160-3","url":null,"abstract":"<p>Magnesium–zinc–calcium alloy has emerged as a key focus in the field of medical degradable materials due to its excellent biodegradability and osteoconductive properties. Grain size is crucial for the physicochemical and biological properties of Mg–Zn–Ca alloy, but it has not been clearly elucidated yet. In this research, Mg-1Zn-0.2Ca-1.0MgO with different grain sizes were prepared to investigate the effect of grain size on the physicochemical properties, corrosion resistance, and osteogenesis. The results indicate that grain refinement improves the mechanical properties and enhances the corrosion resistance of the alloy. The bone surface area to bone volume ratio, bone surface area to tissue volume ratio, and bone volume fraction of the 0.6–0.8 μm group show significantly better performance compared to the 2–3 μm group and 5–6 μm group, indicating that grain refinement can promote the osseointegration between alloy and natural bone. This may be achieved by enhancing the metabolic intensity of alanine, aspartate, glutamate, serine, and glycine around the implant. This work illustrates the effect of grain size on the osseointegration of bone implants and provides a reference for optimizing the properties of bone implant alloys.</p>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 6","pages":"4191 - 4207"},"PeriodicalIF":9.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938262","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}