JOM最新文献

{"title":"Comparative Study of the Tribological Properties of Diamond-Like Carbon and Nitride Coatings Deposited on 40Cr Surfaces","authors":"Rui Nie,&nbsp;Zhuobiao Li,&nbsp;Wenfu Zeng,&nbsp;Cheng Qian,&nbsp;Yunlong Li","doi":"10.1007/s11837-025-07465-1","DOIUrl":"10.1007/s11837-025-07465-1","url":null,"abstract":"<div><p>An electrohydraulic proportional servo hydraulic valve has good intelligent control performance and is the core control component in a hydraulic system. In the working process of an electrohydraulic proportional servo valve, the working principle determines that the spool surface will produce friction wear, which will threaten the safety of the entire hydraulic system when severe. Therefore, in industry, coatings are often applied to the surface of a material to improve its wear resistance. In this study, two diamond-like carbon (DLC) coatings and three nitride coatings were successfully prepared on the surface of a spool material (40cr), and the five coatings were DLC1, DLC2, TiN, CrN, and CrAlN. The microstructures and mechanical and tribological properties of the five coatings were compared. Finally, the effects of the five coatings on the dynamic response characteristics of the servo valve were analyzed using an Amesim simulation. Compared with those of the substrate, the wear rates of the five coatings were reduced by approximately 98%, 98%, 86%, 90%, and 80%. The DLC coatings exhibited better wear resistance than did the nitride coatings.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6665 - 6678"},"PeriodicalIF":2.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical Investigation of Novel RaMO3 (M = Am, Cf) Compounds: Structural, Mechanical, Electronic, Magnetic, and Transport Properties via DFT","authors":"Sakshi Gautam,&nbsp;Dinesh C. Gupta","doi":"10.1007/s11837-025-07478-w","DOIUrl":"10.1007/s11837-025-07478-w","url":null,"abstract":"<div><p>This study investigates the physical properties of RaMO₃ (M = Am, Cf) materials, examining their structural, mechanical, electronic, magnetic, and thermoelectric characteristics using density functional theory (DFT) calculations. The optimization of energy suggests that alloys are stable in the ferromagnetic phase. The calculated lattice parameters, bulk modulus, and volume show minimal variation between the two alloys. The analysis of born stability criteria confirms that these compounds are mechanically stable. The band structure analysis reveals that these compounds are half-metallic in nature. Additionally, the magnetic moments of 5 <i>µ</i>_B and 6 <i>µ</i>_B for RaAmO₃ and RaCfO₃, respectively, suggest strong ferromagnetism, aligning well with the density of states analysis. The thermoelectric coefficients are used to check the applicability of the material for waste heat recovery systems and technological purposes. These findings highlight the potential of RaMO₃ alloys for applications in spintronic devices, memory storage and thermoelectric technology.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6818 - 6827"},"PeriodicalIF":2.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A New Way in Chemical Bath Deposition of PbSe Thin Films","authors":"Metehan Önal","doi":"10.1007/s11837-025-07430-y","DOIUrl":"10.1007/s11837-025-07430-y","url":null,"abstract":"<div><p>The chemical bath deposition method was employed to obtain PbSe thin films. This study aims to achieve high-quality films with uniform morphology and strong adhesion to glass substrates, which can be deposited at room temperature and within relatively short deposition periods. For this purpose, Pb(NO₃)₂, TEA, selenourea, and NH₃ were used together for the first time. XRD results showed that all films have a cubic crystal structure. Additionally, calculations showed that the crystallite sizes were in the range of 35.5–45.0 nm. According to SEM images, all THE films exhibited a spherical grain structure. According to the EDS analysis, a dominance of Se over Pb was observed in all THE samples, indicating a possible <i>p</i>-type conductivity. Additionally, the Se/Pb ratio varied between 1.1 and 1.4, depending on the amount of TEA used. It was determined that the surface roughness values obtained from AFM and SEM images were approximately the same, and these values were between 15.3 nm and 22.1 nm according to AFM data and between 17.78 nm and 29.91 nm according to SEM data. Surface resistance values were measured by the four-probe method, and these values were found to be between 0.211 kΩcm and 5.781 kΩcm.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6521 - 6529"},"PeriodicalIF":2.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11837-025-07430-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Comparative Study of As-Cast Alloys of ZW21 with Varied Element Additions, Investigating Dry and Corrosive Wear in Body Fluid","authors":"Kenza Djebari,&nbsp;Yunus Türen,&nbsp;Levent Elen,&nbsp;Hayrettin Ahlatçı","doi":"10.1007/s11837-025-07394-z","DOIUrl":"10.1007/s11837-025-07394-z","url":null,"abstract":"<div><p>Magnesium (Mg) alloys have emerged as a promising candidate for orthopedic implants due to their exceptional biocompatibility, biodegradability, and bone-like properties. However, their rapid corrosion in physiological environments and wear under mechanical stresses remain critical challenges. Wear resistance testing is essential for orthopedic implants to ensure longevity and prevent adverse biological responses, such as the release of metal ions or debris, which can cause inflammation or implant failure. To overcome these limitations, the incorporation of alloying elements in Mg is believed to be a method that promotes higher mechanical strength and improves corrosion resistance. This study investigates the microstructure and mechanical properties—especially the wear behavior and friction characteristics—of Mg-2Zn-1Y (ZW21) as-cast alloys enhanced with various alloying elements (Nd, Ce, Zr, La, Gd, Ag, Ca). Fabricated using the die-casting method, these alloys were subjected to both dry and corrosive wear tests to comprehensively evaluate their tribological performance. Dry wear tests served as a baseline to assess the intrinsic mechanical properties and establish a reference for corrosive behavior, while wear tests conducted in Hank’s solution simulated physiological conditions to elucidate the combined effects of wear and corrosion. XRD analysis revealed the presence of diverse crystalline phases in the alloys, including the α-Mg matrix, I-phase (Mg₃Zn₆Y₂), W-phase (Mg₃Zn₃Y₂), LPSO-phase (Mg₁₂ZnY), and secondary phases, such as Mg₄₁Nd₅, Mg₁₂Ce, and Mg4Ag, highlighting the influence of alloying elements and Zn/Y ratios on phase formation. The addition of alloying elements—particularly Zr, Nd, and Ce—to the Mg-2Zn-1Y alloy refined grain sizes (from 84 μm to 46 μm) and enhanced hardness (from 51.2 HV to 68.8 HV) by promoting intermetallic phase formation, grain refinement, and solid-solution strengthening. Alloying elements in Mg-2Zn-1Y alloys significantly affected wear behavior and friction coefficients. Higher Nd content enhanced dry wear resistance due to the formation of Mg₄₁Nd₅, while higher Ce content improved corrosive wear resistance due to protective intermetallics. Friction coefficients were lower in Hank’s solution due to its lubricating effect, though micro-galvanic effects around phases like Ca₂Mg₆Zn₃ increased corrosion rates in specific alloys.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 6","pages":"4344 - 4362"},"PeriodicalIF":2.1,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11837-025-07394-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Presenting Best Poster Awards from TMS2025","authors":"Kaitlin Calva","doi":"10.1007/s11837-025-07444-6","DOIUrl":"10.1007/s11837-025-07444-6","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 6","pages":"4059 - 4061"},"PeriodicalIF":2.1,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polydopamine-based Surface Modifications for Tissue Engineering and Biosensing: From Understanding Chemistry to Diverse Applications","authors":"Joya Nath,&nbsp;Rachel Philips,&nbsp;Joel Pilli,&nbsp;Arjak Bhattacharjee","doi":"10.1007/s11837-025-07369-0","DOIUrl":"10.1007/s11837-025-07369-0","url":null,"abstract":"<div><p>In 2007, researchers were intrigued with how effectively saltwater mussels were able to attach to seemingly any surface, looked further into how this was possible, and developed polydopamine (PDA). The polymerized form of a common neurotransmitter, dopamine, PDA adhesive protein has become known as a powerful biomaterial with broad applications in tissue engineering, drug delivery, biosensing, and antibacterial technologies. Its robust adhesion, due to catechol and amine groups, allows uniform coating on various types of surfaces and enhances properties such as bioactivity, corrosion resistance, and mechanical strength. In this review paper, we aim to look at the last 17 years of research around PDA and to examine its applications, particularly in the biomedical field. Additionally, we have focused on how 3D printing and incorporation into biosensing devices could allow for an even wider range of manufactured products within the biomedical industry that use PDA as a primary component. PDA-coated 3D-printed scaffolds show great biocompatibility and osteogenic potential, providing innovative solutions for bone, neural, and cardiac tissue engineering. In drug delivery, PDA enables controlled release and photothermal therapies, enhancing cancer treatment precision while decreasing side effects. PDA’s antibacterial efficacy and biosensing applications are also discussed.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 6","pages":"4312 - 4327"},"PeriodicalIF":2.1,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inside the TMS2025 Session Rooms","authors":"Kelly Zappas,&nbsp;Megan Enright,&nbsp;Jillian Schultz","doi":"10.1007/s11837-025-07446-4","DOIUrl":"10.1007/s11837-025-07446-4","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 6","pages":"4051 - 4054"},"PeriodicalIF":2.1,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Networking Events at TMS2025","authors":"Kelly Zappas,&nbsp;Megan Enright,&nbsp;Jillian Schultz","doi":"10.1007/s11837-025-07443-7","DOIUrl":"10.1007/s11837-025-07443-7","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 6","pages":"4055 - 4058"},"PeriodicalIF":2.1,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TMS2025: A Record-Breaking Meeting","authors":"Kelly Zappas,&nbsp;Megan Enright","doi":"10.1007/s11837-025-07442-8","DOIUrl":"10.1007/s11837-025-07442-8","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 6","pages":"4046 - 4050"},"PeriodicalIF":2.1,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"JOM Technical Topics","authors":"","doi":"10.1007/s11837-025-07440-w","DOIUrl":"10.1007/s11837-025-07440-w","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 6","pages":"4042 - 4043"},"PeriodicalIF":2.1,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}