International Journal of Mechanical and Materials Engineering最新文献

{"title":"Diffusion behavior controlled performance enhancement of Nd-Fe-B magnets diffused by Tb-Ni alloy at various temperatures","authors":"Xuhang Zhang,&nbsp;Wanqi Qiu,&nbsp;Yixin Xu,&nbsp;Xuefeng Liao,&nbsp;Qing Zhou,&nbsp;Hongya Yu,&nbsp;Zhongwu Liu","doi":"10.1186/s40712-025-00222-x","DOIUrl":"10.1186/s40712-025-00222-x","url":null,"abstract":"<div><p>High coercivity and anti-corrosion properties are required for sintered Nd-Fe-B magnets used in new energy and off-shore wind power industries. Here, we found that both magnetic properties and corrosion resistance of Nd-Fe-B magnets can be significantly improved by grain boundary diffusion (GBD) of Tb₆₉Ni₃₁ alloy. The diffusion temperature is a key factor in determining both the magnetic properties and corrosion resistance. The wettability of Tb₆₉Ni₃₁ alloy with the magnet and the fluidity of Tb₆₉Ni₃₁ alloy gradually increase with increasing temperature above 750 ℃, which facilitates the elements diffusion. Tb and Ni show different diffusion behaviors at different temperatures. The magnet diffused at a relatively high temperature exhibits high coercivity due to the formation of a thick Tb-rich shell in the grain with high magnetocrystalline anisotropy field. However, excessive grain growth leads to a reduction in coercivity as the diffusion temperature further increases. The highest corrosion resistance is achieved by Tb₆₉Ni₃₁ alloy diffusion at a relatively lower temperature. By analyzing the Volta potential distribution using scanning Kelvin probe force microscopy, the Ni-rich phase with high potential formed in grain boundaries is mainly responsible for the improved corrosion resistance. The current results suggested that the performance of Tb-Ni diffused magnets can be controlled by the diffusion behaviors of Tb and Ni.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-025-00222-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First-principles study of the matrix alloying effect of X (X = Cr, Mo, W, V, Ti, Si) on the bonding characteristics and mechanical properties of the NbC/Fe interface","authors":"Yutong Yu,&nbsp;Lisheng Zhong,&nbsp;Enci Han,&nbsp;Ke Shi,&nbsp;Kaiyuan Hu,&nbsp;Chengwen Zhang,&nbsp;Yunhua Xu,&nbsp;Jianhong Peng,&nbsp;Xu Hu","doi":"10.1186/s40712-024-00206-3","DOIUrl":"10.1186/s40712-024-00206-3","url":null,"abstract":"<div><p>Matrix alloying is currently the most commonly used means to improve the interfacial bonding strength. To explore the influence of different alloying elements on the interfacial bonding characteristics and mechanical properties of NbC/Fe, this study investigates the influence of the alloying element <i>X</i> (<i>X</i> = Cr, Mo, W, V, Ti, Si) on the properties of the NbC/Fe surface by using first principles and analyzes the segregation behavior, work of adhesion, electronic structure, and tensile strength of the interface before and after doping with the aforementioned alloying elements. The results demonstrate that the segregation energies of Cr, V, and Ti are less than 0, indicating that these alloy elements tend to segregate at the interface. Other alloying elements have positive segregation energies and are solids dissolved in the Fe matrix. When Si is doped at the interface, the adhesion work of the interface is reduced, and the binding property of the interface is destroyed. The charge density difference and population analyses demonstrated that the charge transfer between Cr, V, Ti, Mo, and W was localized, and there was a charge depletion region, presenting covalent characteristics. After doping, the Si atom demonstrated a charge state of loss, and the charge transfer had no clear direction, indicating the characteristics of an ionic bond. According to the theoretical tensile strength analysis, the addition of Mo, W, Si, and Cu will destroy the critical tensile strain at the interface. The tensile strength and strain of the interface significantly improved after the matrix alloying of Fe by Cr, V and Ti, the microstructure evolved during the tensile deformation, and a new phase was formed. A correlation between the atomic calculations and mechanical properties can be determined using first principles, as well as a reference for practical engineering applications.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-024-00206-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of doping Mn ion on the crystal structure and cation distribution in Co1-xMnxFe2O4 compounds","authors":"T. A. Tran,&nbsp;H. C. Tran,&nbsp;N. T. Nghiem,&nbsp;L. V. Truong-Son,&nbsp;G. T. Imanova,&nbsp;S. H. Jabarov","doi":"10.1186/s40712-025-00213-y","DOIUrl":"10.1186/s40712-025-00213-y","url":null,"abstract":"<div><p>In this study, we investigated the effect of Mn doping on the crystal structure and the distribution of cations at tetrahedral and octahedral sites in Co_1-<i>x</i>Mn_<i>x</i>Fe₂O₄ compounds (0 ≤ <i>x</i> ≤ 0.4), synthesized utilizing a solid phase reaction method, utilizing X-ray diffraction (XRD) and Raman spectroscopy measurements. The surface morphology and chemical composition of the compounds were studied using scanning electron microscope and X-ray energy dispersive spectroscopy. The Rietveld refinement of XRD data using the Fullprof package demonstrate that all studied samples are single phase spinels with no other detectable phases and have a cubic structure with the space group of Fd-3 m. The lattice constant and unit-cell volume increased with increased Mn doping concentration, which are attributed to the larger ionic radius of Mn in comparison with Co. Both the X-ray diffraction and Raman spectroscopy results demonstrated that doping Mn at the Co-site leads to the movement of Fe cations from the tetrahedral sites to the octahedral ones.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-025-00213-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring quantum materials and applications: a review","authors":"Rajat Kumar Goyal,&nbsp;Shivam Maharaj,&nbsp;Pawan Kumar,&nbsp;M. Chandrasekhar","doi":"10.1186/s40712-024-00202-7","DOIUrl":"10.1186/s40712-024-00202-7","url":null,"abstract":"<div><p>Researchers in condensed matter physics are currently exploring new materials for specific use in various applications. The peculiar properties of quantum materials (QMs) have garnered significant attention because they have the potential to serve as building blocks for entirely new technologies in modern science and technology. QMs exhibit emerging phenomena governed by quantum confinement, strong electronic correlations, topology, and symmetry, making them exceptional materials. This review paper provides an overview of these unique properties, different types of QMs, and their applications with the latest case studies, presenting a prospective outlook on QMs in multiple domains.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-024-00202-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optical properties of unoxidized and oxidized titanium nitride thin films","authors":"Abiodun A. Odusanya,&nbsp;J. David Schall,&nbsp;Mark A. Pfeifer,&nbsp;John Wright,&nbsp;Catalin Martin,&nbsp;Valentin Craciun,&nbsp;Dhananjay Kumar","doi":"10.1186/s40712-024-00203-6","DOIUrl":"10.1186/s40712-024-00203-6","url":null,"abstract":"<div><p>This study reports a pulsed laser deposition-assisted synthesis of highly metallic titanium nitride (TiN) and a series of semiconducting titanium oxynitride (TiN_xO_y) compounds in thin film form with tunable plasmonic properties by carefully altering the nitrogen (N)-oxygen (O) ratio. The N/O ratio was controlled from 0.3 (highest oxygen doping of TiN) to ~ 1.0 (no oxygen doping of TiN) by growing the TiN films under nitrogen pressures of 50, 35, and 10 mTorr and high vacuum conditions of 2 × 10⁻⁶ Torr with no external gas introduced. The presence of nitrogen in the deposition chamber during the film growth affects the gas phase oxidation of TiN to TiN_xO_y by increasing the mean free path-dependent N and O inter-collisions per second by two to three orders of magnitudes. The evidence of increased oxidation of TiN to TiN_xO_y with an increase in nitrogen deposition pressure was obtained using X-ray photoelectron spectroscopy analysis. While the TiN samples deposited in high vacuum conditions had the highest reflectance, TiN_xO_y thin films were also found to possess high reflectance at low frequency with a well-defined edge around 20,000 cm⁻¹. Furthermore, the vacuum-deposited TiN samples showed a large negative dielectric constant of -330 and the largest frequency of zero-crossing at 25,000 cm⁻¹; the TiN_xO_y samples deposited in the presence of nitrogen ambient also showed promising plasmonic applications at the near-mid infrared range. A comparison of the dielectric constant and loss function data of this research with the literature values for noble metals seems to indicate that TiN and TiN_xO_y have the potential to replace gold and silver in the visible and near-infrared spectral regions.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-024-00203-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical exploration of structural, electronic, elastic, mechanical, and thermodynamic properties of MgCu4Sn intermetallic compound for engineering applications: first-principle calculations","authors":"S. Boucetta,&nbsp;Ly. Benbahouche","doi":"10.1186/s40712-024-00207-2","DOIUrl":"10.1186/s40712-024-00207-2","url":null,"abstract":"<div><p>The structural, electronic, elastic, mechanical, and thermodynamic properties of the ternary MgCu₄Sn intermetallic compound are investigated by means of first-principle calculations within density functional theory (DFT), in combination with the quasi-harmonic Debye model. Local density approximation (LDA) and generalized gradient approximation (GGA) are made for electronic exchange–correlation potential energy. The lattice constant is in good agreement with experimental data. We determine the elastic constant tensor of the compound from the calculated stress–strain relation in both approximations. Once the elastic constants are obtained, the bulk modulus <i>B</i>, shear modulus <i>G</i>, Young’s modulus <i>E</i>, Poisson’s ratio <i>ν</i>, anisotropy factor <i>A</i>, and the ratio <i>B/G</i> for MgCu₄Sn compound were deduced using Voigt-Reuss-Hill (VRH) approximation. The ground-state structure of MgCu₄Sn is predicted to be thermodynamically and mechanically stable. The obtained band structure and density of states reveal metallic character of MgCu₄Sn. The calculation results show also that this intermetallic crystal is a stiff, elastically anisotropic and ductile material. The Debye temperature is also determined from elastic constants. The temperature dependence of the constant volume heat capacity <i>C</i>v, the entropy <i>S</i>, and the volumetric thermal expansion coefficient <i>α</i> in a quasi-harmonic approximation have been obtained from calculated energy <i>E</i> as a function of the volume <i>V</i> of a MgCu₄Sn crystal and discussed for the first report.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-024-00207-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improved capacitance of NiO and nanoporous silicon electrodes for micro-supercapacitor application","authors":"S. Thamri,&nbsp;M. H. Raouadi","doi":"10.1186/s40712-024-00208-1","DOIUrl":"10.1186/s40712-024-00208-1","url":null,"abstract":"<div><p>We investigated the NiO/PS/Si and the NiO/Si electrodes to highlight the effect of the PS porous silicon on the enhancement of the electrode performance. We elaborated the PS with the stain etching method, whereas the NiO nickel oxide was synthesized using sol–gel and deposited through the spin coating technique. We showed that PS porous silicon significantly increased the active surface area and improved the electrical and electrochemical properties. Thus, we obtained promising results for NiO/PS/Si. The effective series resistance and interfacial resistances were reduced from 1.8 Ω cm² and 42 Ω cm² to 0.05 Ω cm² and 0.29 Ω cm² from NiO/Si to NiO/PS/Si, respectively. The capacitance increased from 12.34 µF cm⁻² for NiO/Si to 9.64 mF cm⁻² for NiO/PS/Si. We found similar capacity values from the CV cyclic voltammetry curves and IS impedance spectroscopy Nyquist plots. We obtained equivalent effective series resistance values from the charge–discharge and Nyquist plots, confirming our results. The NiO/PS/Si electrode showed good stability with only a 3% loss for 5000 galvanostatic cycles. The energy efficiency is estimated from the charge–discharge curves to be 91%.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-024-00208-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142939270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical performance and durability attributes of biodegradable natural fibre-reinforced composites—a review","authors":"Raviduth Ramful","doi":"10.1186/s40712-024-00198-0","DOIUrl":"10.1186/s40712-024-00198-0","url":null,"abstract":"<div><p>With the rising awareness about the impact of excessive urbanization on the environment, alternative and more eco-friendly materials such as natural fibre-reinforced composites (NFRCs), which have lower embodied energy, can be considered in modern application ranging from construction housing to urban infrastructures in order to promote the concept of sustainable development. One of the current challenges faced by material engineers is to develop NFRCs with optimized durability performance which correspond to high mechanical attributes during their service lifetime while possessing satisfactory degradability trait in the disposal phase. This proposed review study principally covered the state-of-the-art progress made in the development of sustainable composite material such as advanced and biodegradable NFRC. In the first section, the review covered key aspects of NFRC fabrication including fibres and matrix selection, property-enhancing treatment for fibres and influence of nanostructures in biodegradable composites. In the second phase of this review, the fibre-matrix interaction and their corresponding physical and mechanical performance were discussed. The typical failure modes observed in NFRCs were outlined and means to improve their facture toughness were proposed. Finally, the third section comprised the durability and degradation assessment of key components of the biodegradable NFRCs, namely the fibre reinforcement, matrix and interface sections. Additionally, the impact of disposing of similar composite materials in the environment was assessed, and present-day recycling techniques were discussed. Further research on the mechanical performance, durability traits and degradability aspects of NFRCs as enumerated in this study will unquestionably promote their use and integration into a wider range of engineering applications in our modern society.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"19 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-024-00198-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Incorporation of nanocarbon materials of various dimensions enhances the microwave absorption properties of Nd-doped barium ferrite","authors":"Xiaohua Feng,&nbsp;Pengyu Li,&nbsp;Haopeng Yu,&nbsp;Chengwu Yu,&nbsp;Yi Liu,&nbsp;Hua Li","doi":"10.1186/s40712-024-00201-8","DOIUrl":"10.1186/s40712-024-00201-8","url":null,"abstract":"<div><p>Physicochemical features of nano-carbon (NC) particles significantly influence the microwave absorption performances of NC-containing materials. Here, we report the development of rare earth neodymium (Nd)-doped barium ferrite (BaM) composites with carbon nanotubes (CNTs) and other NC materials (onion-like carbon and graphene oxide) to enhance microwave absorption. Nd_0.15-BaM composites containing 8% CNTs demonstrate a minimum reflection loss of − 123.12 dB at 7.97 GHz, with an effective absorption bandwidth of 5.46 GHz in the 2–18 GHz range. CNTs improve impedance matching and synergize with Nd_0.15-BaM, boosting absorption properties. The absorption performance is further tuned by adjusting the type and content of NC materials. These results highlight the potential of these composites for applications in wave absorption.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"19 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-024-00201-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review on composites based on upconversion nanoparticles and graphene oxide: development and theranostic applications centered at solid tumors","authors":"Kabirdas B. Ghorpade,&nbsp;Manoj Kumar,&nbsp;Sanjay Tiwari","doi":"10.1186/s40712-024-00187-3","DOIUrl":"10.1186/s40712-024-00187-3","url":null,"abstract":"<div><p>Upconversion nanoparticles (UCNPs) have attracted considerable interest for the imaging of solid tumors because of their unique optical features. These applications can be expanded towards anticancer therapeutics by developing UCNP-graphene oxide (GO) composites. This strategy addresses low loading capacity and poor dispersibility of UCNPs in physiological media. These aspects have been covered in this article. We begin by discussing the synthesis methods and challenges associated with UCNPs, along with their surface modification strategies. Next, we describe the approaches of designing UCNP-GO composites and their applications in imaging, biosensing, and different therapeutic platforms.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"19 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-024-00187-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}