{"title":"Exploration of Microstructural and Physical Characteristics in a Newly Formulated Ceramic Utilizing Kaolin and Waste MgO-C Refractory Bricks","authors":"Sabrina Ladjama, Alima Mebrek, Azzedine Grid, Sihem Benayache","doi":"10.1007/s11837-024-06882-y","DOIUrl":"10.1007/s11837-024-06882-y","url":null,"abstract":"<div><p>The investigation focused on the densification and phase transition of cordierite ceramic made from the Algerian raw material kaolin DD1 and spent refractory bricks (MgO-C) with a ratio weight of 85:15. The samples were sintered for 2 h at 1200–1400°C. All samples were studied in terms of phase evolution on heating and microstructure by XRD, Fourier-transform infrared spectroscopy (FTIR), differential thermal analysis (DTA), density, hardness and SEM observations. The findings indicated that with the elevation of temperature, the crystallinity of α-cordierite exhibited a rising trend, reaching its peak at 1400°C with a value of 54.48%. Conversely, the mullite content suffered a decline as the sintering temperature increased. The utilization of waste brick sources containing magnesia (MgO) at different firing temperatures resulted in an enhanced formation of cordierite and spinel at the expense of mullite, which exhibited a decreasing trend.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"76 11","pages":"6325 - 6337"},"PeriodicalIF":2.1,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11837-024-06882-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452923","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}
JOMPub Date : 2024-09-30DOI: 10.1007/s11837-024-06920-9
{"title":"TMS Welcomes New Members in May and August 2024","authors":"","doi":"10.1007/s11837-024-06920-9","DOIUrl":"10.1007/s11837-024-06920-9","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"76 11","pages":"6121 - 6139"},"PeriodicalIF":2.1,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452931","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}
JOMPub Date : 2024-09-25DOI: 10.1007/s11837-024-06805-x
Milad Sakkaki, Zohre Ahmadi, Seyed Mohammad Arab, Mohammad Farvizi, Mehdi Shahedi Asl
{"title":"Influence of g-C3N4 on Phase Evolution and Microstructural Modifications in Spark Plasma Sintered TiB2-Based Ceramics","authors":"Milad Sakkaki, Zohre Ahmadi, Seyed Mohammad Arab, Mohammad Farvizi, Mehdi Shahedi Asl","doi":"10.1007/s11837-024-06805-x","DOIUrl":"10.1007/s11837-024-06805-x","url":null,"abstract":"<div><p>In this research, TiB<sub>2</sub>-based ceramic was made by compacting the powder with g-C<sub>3</sub>N<sub>4</sub> additive using spark plasma sintering (SPS) method. To manufacture the sample, first, a mixed suspension of g-C<sub>3</sub>N<sub>4</sub> and TiB<sub>2</sub> powders with a mass ratio of 1–10 was prepared in 96% ethanol. Then, the particles of the secondary phase were properly distributed in the main matrix with an ultrasonic stirrer. The SPS step was performed at 1900°C for 7 min with an external load of 40 MPa. In the following, SEM images and XRD patterns were used to investigate the microstructural development and phase analysis of the manufactured composite sample. Also, for phase studies, HSC Chemistry software was employed to identify the possible reactions according to thermodynamics principles. The results showed that the use of g-C<sub>3</sub>N<sub>4</sub> as an additive in the TiB<sub>2</sub>-based composite resulted in a sample with lower relative density in such a way that the relative density decreased to 91.3% compared to the TiB<sub>2</sub> monolithic sample with a relative density of 96.7%. The g-C<sub>3</sub>N<sub>4</sub> additive was fully consumed during the SPS and decomposed into its elements, causing the in situ synthesis of BN phase.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"76 11","pages":"6207 - 6216"},"PeriodicalIF":2.1,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142453004","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}
JOMPub Date : 2024-09-25DOI: 10.1007/s11837-024-06880-0
Laiping Bai, Jianguo Li, Mengchao Cui, Bo Gao, Xue Yuan
{"title":"Analysis of Axial Particle Size Characteristics to Determine the Effect of Fluidized Bed on the Separation of Coarse Coal Slime","authors":"Laiping Bai, Jianguo Li, Mengchao Cui, Bo Gao, Xue Yuan","doi":"10.1007/s11837-024-06880-0","DOIUrl":"10.1007/s11837-024-06880-0","url":null,"abstract":"<div><p>In the domain of coarse coal slime sorting, the liquid-solid fluidized bed (LSFB) sorting machine currently stands out as an effective technical solution for processing coarse coal slurry. This paper delves into the vertical distribution patterns of high-ash fine sludge within the LSFB column. The study reveals that, in the vertical plane, the ash gradient for particles > 0.25 mm is significantly steeper than for those < 0.25 mm. Specifically, low-density fine coal particles > 0.25 mm tend to gather in the middle and upper sections of the column, while high-density particles concentrate in the middle to lower sections. Conversely, the smaller, < 0.25 mm particles are distributed relatively evenly across different density levels. Notably, at the overflow outlet and upper regions of the column, the ash content for particles < 0.25 mm is considerably higher than that of larger particles, with − 0.125-mm high-ash fine sludge predominantly accumulating in the upper portion of the LSFB, eventually contaminating the fine coal in the overflow. The insights from this study are crucial for advancing the design and utilization of LSFB sorting machines and enhancing the efficiency of coarse coal slurry sorting and recovery processes.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"76 12","pages":"7315 - 7324"},"PeriodicalIF":2.1,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737080","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}
JOMPub Date : 2024-09-24DOI: 10.1007/s11837-024-06848-0
Dmitry Pruttskov, Nikolai Krivoruchko, Alexey Kirichenko
{"title":"Improving the Dehydration Technology of MgCl2·6H2O and KCl·MgCl2·6H2O","authors":"Dmitry Pruttskov, Nikolai Krivoruchko, Alexey Kirichenko","doi":"10.1007/s11837-024-06848-0","DOIUrl":"10.1007/s11837-024-06848-0","url":null,"abstract":"<div><p>The paper summarizes the results of the authors’ studies on the improvement of the dehydration technology of bischofite (MgCl<sub>2</sub>·6H<sub>2</sub>O) and carnallite (KCl·MgCl<sub>2</sub>·6H<sub>2</sub>O). Hydrolysis is suppressed by creating excess pressure of hydrogen chloride (HCl) in a dehydration apparatus. An effective technology is the production of slightly hydrolyzed bi-aqueous salts in solid form and their subsequent melting in the presence of HCl-containing gases. A simple and efficient way to produce the latter is the combustion of methane (CH<sub>4</sub>) in a mixture of chlorine and air in immersion burners. The kinetics of chlorination of Mg(OH)Cl with HCl-containing gases has been studied. It was found that the reaction rate was limited by the absorption of HCl. The operation of the apparatus for salts dehydration is considered from the point of view of the ideal mixing reactor model. Changes in the apparatus and technological scheme of obtaining magnesium from carnallite are proposed.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"76 11","pages":"6589 - 6599"},"PeriodicalIF":2.1,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452961","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}
JOMPub Date : 2024-09-24DOI: 10.1007/s11837-024-06874-y
Jagadeesh Neduri, Gajanan P. Chaudhari, Sai Ramudu Meka
{"title":"Combined Application of Mechanical Deformation and Nitriding to Realize Optimal Mechanical and Anticorrosion Properties for 316 Stainless Steel","authors":"Jagadeesh Neduri, Gajanan P. Chaudhari, Sai Ramudu Meka","doi":"10.1007/s11837-024-06874-y","DOIUrl":"10.1007/s11837-024-06874-y","url":null,"abstract":"<div><p>Thermo-mechanical and thermochemical surface treatments are well-established methods for optimizing the properties of metallic materials. This study examines the effect of cryo-rolling-induced martensite in 316 stainless steel on its corrosion characteristics and the way these characteristics alter after low-temperature nitriding. 316 stainless steel specimens were cryo-rolled to realize varying dislocation densities and martensite fractions followed by salt bath nitriding at 425°C for 4 h. Detailed microstructural and electrochemical characterizations were performed after different stages. Increased martensite content resulted in a thicker nitrided layer, and the martensite diffraction peaks were extensively broadened with relatively less shift towards lower diffraction angles. Subsequent nitriding led to a much higher hardness increase for martensite phase compared to austenite phase. Electrochemical measurements showed that martensite development reduced the corrosion resistance; however, the following nitriding treatment enhanced the corrosion resistance. The distinct electrochemical properties observed were related to the presence of dislocations and binding characteristics of N with dislocations and substitutional elements of austenite and martensite phases. Successive application of cryo-rolling and nitriding can offer optimal combination of mechanical and electrochemical properties.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"76 12","pages":"7146 - 7156"},"PeriodicalIF":2.1,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737322","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":"Effect of Bonding Temperature on the Interfacial Microstructure and Mechanical Properties of W/Steel Joints Diffusion-Bonded with a CoFeNi Interlayer","authors":"Chunyan Wang, Guoyun Tao, Shuibao Liang, Kuijing Song, Chengyong Wang, Yucheng Wu, Zhihong Zhong","doi":"10.1007/s11837-024-06877-9","DOIUrl":"10.1007/s11837-024-06877-9","url":null,"abstract":"<div><p>Realizing the reliable bonding of tungsten (W) and reduced activation ferritic/martensitic (RAFM) steel is of significance for the fabrication of plasma-facing components in fusion reactors. Considering the significant differences in physical and chemical properties between the substrates of W and RAFM steel, the development of novel joining materials has attracted much attention in recent years. In the present work, a medium entropy alloy CoFeNi interlayer was selected to diffusion bond W and RAFM steel by utilizing an electric field-assisted joining technique. The effect of bonding temperature on the interface microstructure and mechanical properties of the joint was studied at room temperature. For the joints diffusion-bonded in the temperature range between 800°C and 1100°C for 15 min under 20 MPa, good metallurgical bonding without cracks and discontinuities were achieved at both the steel/CoFeNi and CoFeNi/W interfaces. Face-centered cubic (FCC) solid solutions were formed at the steel/CoFeNi interface, while both FCC and μ phases were identified at the CoFeNi/W interface. The W/CoFeNi/steel joint diffusion bonded at 900°C has the highest tensile strength of 313 MPa. Moreover, the comparison of the joint tensile strength between this work and previous researches has been discussed.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"76 11","pages":"6313 - 6324"},"PeriodicalIF":2.1,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11837-024-06877-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452916","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}
JOMPub Date : 2024-09-23DOI: 10.1007/s11837-024-06847-1
Krishna Joshi, Pankaj Kumar
{"title":"Strength Behavior of Niobium-Based Refractory Systems","authors":"Krishna Joshi, Pankaj Kumar","doi":"10.1007/s11837-024-06847-1","DOIUrl":"10.1007/s11837-024-06847-1","url":null,"abstract":"<div><p>A comprehensive assessment of the quasi-static strength behavior of niobium (Nb)-based refractory systems, including the conventional Nb alloys and refractory high-entropy alloys (RHEAs), in a broad temperature range has been performed in this review. The strength and ductility data of the Nb-based refractory systems in varying temperature ranges manufactured by various methods have been compiled and discussed to correlate the manufacturing, material characteristics, deformation, and strength behavior. The microstructure characteristics and the interstitial contaminations have been identified as the dominating factors in controlling strength behavior in the low-temperature range of the Nb alloys. In the intermediate temperature range, the dynamic strain recovery plays a significant role in dictating the strength behavior, while, in the high-temperature domain, the diffusion-assisted deformation process leads to significant strength reduction. Nb-based RHEAs have been found to have great potential for applications in extreme temperatures (> 1200°C). A wide range of strength and ductility is possible in Nb-based RHEAs. Solid-solution strengthening largely controls the variation in strength, ductility, and thermal stability of RHEAs.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"76 11","pages":"6277 - 6301"},"PeriodicalIF":2.1,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452917","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}
JOMPub Date : 2024-09-18DOI: 10.1007/s11837-024-06878-8
Fei Liu, Jiaqiang Li, Kunyu Chen, Yang Li, Mingyi Zhang, Chong Zhao, Chi Xiao, Yong Huan
{"title":"A Review of Multiphysics Coupling Mechanical Behavior of Titanium-Coated Heterogeneous Wing for Re-entry Hypersonic Vehicle","authors":"Fei Liu, Jiaqiang Li, Kunyu Chen, Yang Li, Mingyi Zhang, Chong Zhao, Chi Xiao, Yong Huan","doi":"10.1007/s11837-024-06878-8","DOIUrl":"10.1007/s11837-024-06878-8","url":null,"abstract":"<div><p>The titanium-coated alloy heterogeneous structure has been widely used in the manufacture of re-entry hypersonic vehicle wings. However, due to the extreme and complex hypersonic service environment, the strength of the Ti alloy matrix is easily reduced under the synergistic action of complex loads such as aerodynamic heat, vibration, corrosion, and noise. This results in a mismatch of structural strength at the interface structure in the titanium-coated alloy, leading to destruction of the wing aerodynamic shape. At the same time, multiple load synergies can also lead to defects such as cracks and holes in the surface coating, damaging wing structural integrity. In addition, under the combined action of frequency- and time-domain loads, the wing structure will also experience creep deformation, leading to fatigue–creep interaction, exacerbating the accumulation of wing damage, and posing a serious threat to the service safety of the re-entry hypersonic vehicle. Therefore, this paper first reviews current research hotspots of re-entry hypersonic vehicle technology, and then analyzes the strengthening–toughening mechanism, high-temperature fatigue behavior, high-temperature creep behavior, and the damage prediction model of the titanium-coated alloy’s heterogeneous structure. Finally, it summarizes and prospects future research directions.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"76 11","pages":"6302 - 6312"},"PeriodicalIF":2.1,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260055","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}
JOMPub Date : 2024-09-18DOI: 10.1007/s11837-024-06866-y
Chengjun Liu, Xiaoxiang Xie, Jiyu Qiu, Wenjie Li, Guojie Huo
{"title":"Phase Diagram of CaO-Al2O3-VOx Slag System Under Reducing Atmosphere","authors":"Chengjun Liu, Xiaoxiang Xie, Jiyu Qiu, Wenjie Li, Guojie Huo","doi":"10.1007/s11837-024-06866-y","DOIUrl":"10.1007/s11837-024-06866-y","url":null,"abstract":"<div><p>The phase diagram information of the CaO-Al<sub>2</sub>O<sub>3</sub>-VO<sub><i>x</i></sub> system is of significant importance for the direct alloying study of vanadium (V) during the smelting process of V-containing alloy steel, as well as for subsequent process optimization. This study has utilized the high-temperature phase equilibrium experimental method, combined with scanning electron microscope–energy dispersive spectrometer (SEM–EDS), electron probe micro-analysis (EPMA) and X-ray photoelectron spectroscopy (XPS) detection techniques, to research the phase equilibrium of the CaO-Al<sub>2</sub>O<sub>3</sub>-VO<sub><i>x</i></sub> system under argon (Ar) atmosphere at 1400°C. This study reveals that the phase diagram of CaO-Al<sub>2</sub>O<sub>3</sub>-VO<sub><i>x</i></sub> system, under the specified conditions, comprises 4 three-phase regions, 7 two-phase regions, and a liquid phase region. This study has plotted the CaO-Al<sub>2</sub>O<sub>3</sub>-V<sub>2</sub>O<sub>5</sub>-VO<sub>2</sub> three-dimensional phase diagram and represented the phase equilibrium in CaO-Al<sub>2</sub>O<sub>3</sub>-V<sub>2</sub>O<sub>5</sub>, CaO-Al<sub>2</sub>O<sub>3</sub>-VO<sub>2</sub>, CaO-Al<sub>2</sub>O<sub>3</sub>-VO<sub>2.335</sub>, and Ca-Al-V systems. At the same time, the reliability of each projected phase diagram was quantitatively assessed.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"76 11","pages":"6555 - 6567"},"PeriodicalIF":2.1,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11837-024-06866-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260054","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}