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Measurement of inter-particle Hamaker constants in mineral materials using atomic force microscopy 利用原子力显微镜测量矿物材料中的粒子间哈马克常数
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-12 DOI: 10.1016/j.matlet.2024.137709
Huaqiang Yuan , Zhi Ge , Hongzhi Zhang , Nengdong Jiang , Yujie Feng , Ze Chang
{"title":"Measurement of inter-particle Hamaker constants in mineral materials using atomic force microscopy","authors":"Huaqiang Yuan ,&nbsp;Zhi Ge ,&nbsp;Hongzhi Zhang ,&nbsp;Nengdong Jiang ,&nbsp;Yujie Feng ,&nbsp;Ze Chang","doi":"10.1016/j.matlet.2024.137709","DOIUrl":"10.1016/j.matlet.2024.137709","url":null,"abstract":"<div><div>The Hamaker constant is essential for quantifying particles interactions; however, its study has been limited due to technical constraints. While atomic force microscopy (AFM) can measure probe-to-particle surface interaction forces, it cannot directly measure particle-to-particle interaction forces. To address this issue, this paper introduces an AFM-based test method to quantify the interaction force between particles and a new approach for calculating the Hamaker constant. Using these methods, the particle-to-particle Hamaker constants of cement and fly ash in various environments were investigated. Results showed that adhesion values followed a log-normal distribution and that both adhesion and Hamaker constants varied significantly between materials. The measured Hamaker constants of different mineral materials ranged from 22.79 to 38.26 × 10<sup>−20</sup> J in air and from 4.79 to 14.47 × 10<sup>−20</sup> J in water, with material properties and testing environment identified as primary influencing factors.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137709"},"PeriodicalIF":2.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722405","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}
引用次数: 0
On cleavage crack morphology in some rock materials of different genesis 论不同成因岩石材料中的劈裂裂纹形态
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-10 DOI: 10.1016/j.matlet.2024.137702
Peter Panfilov , Maxim Mezhenov , Alexandra Kuklina , Jinming Guo , Dmitry Zaytsev
{"title":"On cleavage crack morphology in some rock materials of different genesis","authors":"Peter Panfilov ,&nbsp;Maxim Mezhenov ,&nbsp;Alexandra Kuklina ,&nbsp;Jinming Guo ,&nbsp;Dmitry Zaytsev","doi":"10.1016/j.matlet.2024.137702","DOIUrl":"10.1016/j.matlet.2024.137702","url":null,"abstract":"<div><div>Fracture of rocks and biominerals on the microscopic scale under bending was examined. Eggs of some birds were used in the study because an eggshell is biomineral consisted of 90% of calcium carbonate of the biological genesis. Cracking in the model materials was studied in optical microscopes including in situ bending of eggshell samples. It was shown that despite brittle deformation behavior on the macroscopic scale and brittle transgranular fracture as fracture mode, the morphology of cracking of model materials looks like cracks in the neck of aluminum under tension.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137702"},"PeriodicalIF":2.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656636","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}
引用次数: 0
Synthesis of multi-peak emitting carbon dots using phenylenediamine isomers 利用苯二胺异构体合成多峰发光碳点
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-10 DOI: 10.1016/j.matlet.2024.137693
Baohui Li , Tao Song , Fang Cheng , Lingling Ren , Zhili Jia , Lingyu Song , Chen Pu
{"title":"Synthesis of multi-peak emitting carbon dots using phenylenediamine isomers","authors":"Baohui Li ,&nbsp;Tao Song ,&nbsp;Fang Cheng ,&nbsp;Lingling Ren ,&nbsp;Zhili Jia ,&nbsp;Lingyu Song ,&nbsp;Chen Pu","doi":"10.1016/j.matlet.2024.137693","DOIUrl":"10.1016/j.matlet.2024.137693","url":null,"abstract":"<div><div>Revealing the relationship between structure and optical properties of multi-peak emissive carbon dots (CDs) is important. Three types of multi-peak emission CDs were synthesized by one-step hydrothermal method with phenylenediamine (PD) isomers (o/m/p) and maleic anhydride serving as precursors. During the synthesis process, three PDs exhibited different microstructural and chemical states, resulting in various fluorescence emission centers. The multi-peak emission behavior of o-CDs and m-CDs is composed of molecular fluorophores and carbon core states, while that of p-CDs consists of surface states and carbon core states. These different fluorescence centers lead to diverse fluorescence behaviors of the CDs in different solvents and environments. This work inspires the clarification of the relationship between the structural and optical properties of multi-peak emissive CDs.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137693"},"PeriodicalIF":2.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656598","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}
引用次数: 0
Dynamic mechanical analysis of additively manufactured continuous Kevlar fiber-reinforced nylon composites across variable fiber orientations 对连续凯夫拉纤维增强尼龙复合材料不同纤维取向的加成制造动态力学分析
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-10 DOI: 10.1016/j.matlet.2024.137704
Dushyant Dubey , Soumya Chowdhury , Vikas Khatkar , Satinder Paul Singh , Bijoya Kumar Behera
{"title":"Dynamic mechanical analysis of additively manufactured continuous Kevlar fiber-reinforced nylon composites across variable fiber orientations","authors":"Dushyant Dubey ,&nbsp;Soumya Chowdhury ,&nbsp;Vikas Khatkar ,&nbsp;Satinder Paul Singh ,&nbsp;Bijoya Kumar Behera","doi":"10.1016/j.matlet.2024.137704","DOIUrl":"10.1016/j.matlet.2024.137704","url":null,"abstract":"<div><div>This study examines the dynamic mechanical properties of composites made via continuous filament fabrication, an additive manufacturing (AM) technique. Four Nylon/Kevlar samples with varying fiber orientations were produced, each with a 0.1 mm layer height and 3 mm total thickness, resulting in a fiber volume fraction of 15.71 % to 18.44 %. Dynamic mechanical analysis (DMA) was used to assess viscoelastic behavior, focusing on storage modulus, loss modulus, and damping factor (tan delta). The specimen F_NK1 exhibited the highest initial storage modulus, with gradual stiffness loss at higher settling temperatures (Ts), while F_NK2 showed a steeper decline, and F_NK3 and F_NK4 had lower initial moduli and greater temperature sensitivity.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137704"},"PeriodicalIF":2.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656535","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}
引用次数: 0
Effects of melt-pool geometry on grain structure evolution in multilayer laser metal deposition of a single-crystal superalloy 熔池几何形状对单晶超合金多层激光金属沉积过程中晶粒结构演变的影响
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-10 DOI: 10.1016/j.matlet.2024.137705
Jingyi Zhang , Peiyu Zhang , Wenqian Zhang , Shili Tan , Xin Zhou
{"title":"Effects of melt-pool geometry on grain structure evolution in multilayer laser metal deposition of a single-crystal superalloy","authors":"Jingyi Zhang ,&nbsp;Peiyu Zhang ,&nbsp;Wenqian Zhang ,&nbsp;Shili Tan ,&nbsp;Xin Zhou","doi":"10.1016/j.matlet.2024.137705","DOIUrl":"10.1016/j.matlet.2024.137705","url":null,"abstract":"<div><div>The effects of melt-pool geometry on grain structure evolution in the multilayer laser metal deposition of a single-crystal superalloy are analyzed. The spatiotemporal variations in geometrical features not only affect the grain growth patterns in each layer but also lead to different overlapping behaviors and resultant substrate conditions. The initial melt pool with a large depth-to-height ratio generally contributes to sustaining the continual epitaxial growth; otherwise, a triangle-shaped columnar region with grain orientation alternatively changed can be formed.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137705"},"PeriodicalIF":2.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656596","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}
引用次数: 0
Effective strategies for improving quenched microstructure and mechanical properties of hot-rolled seamless steel pipes 改善热轧无缝钢管淬火微观结构和机械性能的有效策略
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-10 DOI: 10.1016/j.matlet.2024.137707
Chao Wang , Xin Wang , Bo Fu , Yanfa Han , Guo Yuan
{"title":"Effective strategies for improving quenched microstructure and mechanical properties of hot-rolled seamless steel pipes","authors":"Chao Wang ,&nbsp;Xin Wang ,&nbsp;Bo Fu ,&nbsp;Yanfa Han ,&nbsp;Guo Yuan","doi":"10.1016/j.matlet.2024.137707","DOIUrl":"10.1016/j.matlet.2024.137707","url":null,"abstract":"<div><div>The containing Ti-Mg-Ca-O composite particles were innovatively used to achieve microstructure refinement and properties improvement of hot-rolled seamless steel pipes, and compared with conventional steel (C# steel). The results show that the C# steel mainly consisted of parallel lath martensite after on-line quenching. Under the same rolling and heat treatment conditions, dominant Ti-Mg-Ca-O composite particles in modified steel (M# steel) were effective nucleation sites of acicular ferrite, dividing the prior austenite grains and refining microstructures. The strength values of the both steels were at the same level, however, the impact energy of M# steel was significantly higher than C# steel, increasing by 28%. This study provides an effective method for further microstructure refinement of hot-rolled seamless steel tubes.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137707"},"PeriodicalIF":2.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656633","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}
引用次数: 0
The effect of scanning strategies on the defect distribution and mechanical properties of additive manufactured 316L stainless steel components 扫描策略对添加剂制造的 316L 不锈钢部件的缺陷分布和机械性能的影响
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-10 DOI: 10.1016/j.matlet.2024.137703
Haifeng Zhai , Wei Jiang , Haonan Wu , Donghu Li , Yang Wang
{"title":"The effect of scanning strategies on the defect distribution and mechanical properties of additive manufactured 316L stainless steel components","authors":"Haifeng Zhai ,&nbsp;Wei Jiang ,&nbsp;Haonan Wu ,&nbsp;Donghu Li ,&nbsp;Yang Wang","doi":"10.1016/j.matlet.2024.137703","DOIUrl":"10.1016/j.matlet.2024.137703","url":null,"abstract":"<div><div>The effect of scanning strategies on defect distribution and mechanical properties of additive-manufactured (AM) 316L stainless steel components was investigated. Three scanning strategies (A1-stripe, A2-loop, A3-chessboard) were applied to study the defect characteristics using X-ray microscopy (XRM) and evaluate the resulting mechanical behavior through tensile tests. The results indicate that the chessboard strategy produces fewer, smaller, and more uniform defects, contributing to superior tensile strength and reduced anisotropy. In contrast, the loop strategy results in a higher density of elongated defects near the surface, leading to increased stress concentrations and lower tensile performance. This study provides insights into optimizing scanning strategies to enhance defect control, thereby improving the overall mechanical properties of 316L stainless steel in additive manufacturing. These findings are instrumental in advancing the process design for defect mitigation and structural integrity in AM components.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137703"},"PeriodicalIF":2.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656541","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}
引用次数: 0
Effect of phosphorus additions and milling time on the mechanosynthesis of Ni50Cu40-x(Fe2B)10Px alloys 磷添加量和研磨时间对 Ni50Cu40-x(Fe2B)10Px合金机械合成的影响
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-09 DOI: 10.1016/j.matlet.2024.137699
M. Slimi , N. Khitouni , A.S. Alnafisah , M. Khitouni , J.J. Suñol
{"title":"Effect of phosphorus additions and milling time on the mechanosynthesis of Ni50Cu40-x(Fe2B)10Px alloys","authors":"M. Slimi ,&nbsp;N. Khitouni ,&nbsp;A.S. Alnafisah ,&nbsp;M. Khitouni ,&nbsp;J.J. Suñol","doi":"10.1016/j.matlet.2024.137699","DOIUrl":"10.1016/j.matlet.2024.137699","url":null,"abstract":"<div><div>The effects of phosphorus addition and milling time on the development of phases, microstructural and thermal behaviors in Ni<sub>50</sub>Cu<sub>40-x</sub>(Fe<sub>2</sub>B)<sub>10</sub>P<sub>x</sub> (x = 10, 20, and 30at.%) prepared via mechanical alloying, were examined by scanning electron microscopy, X-ray diffraction, and differential scanning calorimetry techniques. As the phosphorous content and milling time rise, the crystallite size gets finer and<!--> <!-->the microstrains become more significant. Furthermore, P addition promotes the amorphous phase and subsequent supersaturated solid solution Ni(Cu,Fe,P) by the simultaneous occurrence of amorphization and recrystallization phenomena. Thermal study shows the complexity of the behavior as a function of the phosphorus content associated with the restoration of defects and the recrystallization of intermediate phases.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137699"},"PeriodicalIF":2.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656545","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}
引用次数: 0
A core–shell hierarchically porous ZSM-5 zeolite with an Al-rich shell synthesized by using hydrolysable templates 利用可水解模板合成具有富铝壳的核壳分层多孔 ZSM-5 沸石
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-09 DOI: 10.1016/j.matlet.2024.137700
Fulin Xu , Kairui Fu , Jiamei Wang , Wenjian Yu , Yanjie Li , Ziyan Liu , Jingui Wang
{"title":"A core–shell hierarchically porous ZSM-5 zeolite with an Al-rich shell synthesized by using hydrolysable templates","authors":"Fulin Xu ,&nbsp;Kairui Fu ,&nbsp;Jiamei Wang ,&nbsp;Wenjian Yu ,&nbsp;Yanjie Li ,&nbsp;Ziyan Liu ,&nbsp;Jingui Wang","doi":"10.1016/j.matlet.2024.137700","DOIUrl":"10.1016/j.matlet.2024.137700","url":null,"abstract":"<div><div>Hierarchically porous zeolites with both macroporous/mesoporous and microporous channels have received significant attention due to their better catalytic performance than that of conventional zeolites. Here, for the first time, a template with hydrolysable groups that can achieve in-situ regulation of the pH value has been designed. Employing this novel template, core–shell hierarchically porous ZSM-5 zeolites with Al-rich shells were one-step synthesized, which exhibit better catalytic activity and selectivity than conventional microporous zeolites in bulky-molecule catalysis.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137700"},"PeriodicalIF":2.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656599","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}
引用次数: 0
Simplified synthesis of BaZn2(PO4)2 conversion coating with enhanced corrosion resistance 具有更强耐腐蚀性的 BaZn2(PO4)2 转换涂层的简化合成方法
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2024-11-09 DOI: 10.1016/j.matlet.2024.137685
Chi Li, Xiaogang Di, Shouwei Ren, Jian Wang, Zhigao Wang, Tijun Li
{"title":"Simplified synthesis of BaZn2(PO4)2 conversion coating with enhanced corrosion resistance","authors":"Chi Li,&nbsp;Xiaogang Di,&nbsp;Shouwei Ren,&nbsp;Jian Wang,&nbsp;Zhigao Wang,&nbsp;Tijun Li","doi":"10.1016/j.matlet.2024.137685","DOIUrl":"10.1016/j.matlet.2024.137685","url":null,"abstract":"<div><div>Phosphate conversion coatings with high corrosion resistance are crucial for the rapid advancement of anti-corrosion systems for steel materials used in aviation. In this study, BaZn<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub> coating was synthesized using a chemical liquid phase deposition method and characterized by X-ray diffraction, scanning electron microscopy, and N<sub>2</sub> adsorption–desorption isotherm analysis. Electrochemical tests revealed that the dense stacking morphology of the BaZn<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub> coating led to a significant decrease in electrochemical active surface area, electrochemical impedance response, and corrosion potential. As a result, the BaZn<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub> coating exhibited satisfactory anti-corrosion performance in 3 wt% NaCl solution.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137685"},"PeriodicalIF":2.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721750","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}
引用次数: 0
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