{"title":"Fabrication of zirconium nitride-zirconia toughened alumina core-shell ceramics as surrogate for the uranium nitride-uranium dioxide core-shell ceramic fuel","authors":"Ming-Zhou Chen, Hong-Lan Liu, Wei-Ming Guo, Qi-Sen Ren, Rong-Kun Yang, Lin-Lin Zhu, Ye-Hong Liao, Hua-Tay Lin","doi":"10.1111/ijac.15008","DOIUrl":"https://doi.org/10.1111/ijac.15008","url":null,"abstract":"<p>The zirconium nitride-zirconia toughened alumina (ZrN-ZTA) core-shell ceramics, whose shell was the ZTA and core was the ZrN-ZTA with ZrN content between 0 and 88 vol.% were successfully fabricated by powder metallurgy method combined with spark plasma sintering in order to improve the oxidation and corrosion resistance of ZrN ceramics used as a surrogate fuel of uranium nitride. Experimental results showed that the core-shell ceramics fabricated were intact and crack-free, and the interfaces between the shell and the core were well-defined and coherent without apparent defects. Also, all of the ZTA ceramic shells exhibited similar dense microstructure and mechanical properties. When ZrN content in the core increased from 0 to 88 vol.%, the Vickers hardness of the core was increased and then decreased, and fracture toughness was also increased to 5.42 ± 0.31 MPa·m<sup>1/2</sup> and then decreased to 4.32 ± 0.25 MPa·m<sup>1/2</sup>. The core-shell ceramics fabricated in this study with the high nitride content have demonstrated reliable microstructure and mechanical properties, which can be potential candidates for application as accident-tolerant fuel in nuclear energy systems.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114600","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}
Eun Su Jung, JinUk Yoo, Tae Min Choi, Hwa Rim Lee, Chae Yeon Lee, Dong Hyun Kim, Sung Gyu Pyo
{"title":"Performance variation with pristine and doped high-k materials via atomic layer deposition","authors":"Eun Su Jung, JinUk Yoo, Tae Min Choi, Hwa Rim Lee, Chae Yeon Lee, Dong Hyun Kim, Sung Gyu Pyo","doi":"10.1111/ijac.15001","DOIUrl":"https://doi.org/10.1111/ijac.15001","url":null,"abstract":"<p>This review examines the performance variations of pristine and doped high-k materials deposited using atomic layer deposition (ALD). This paper explores the fundamental principles of ALD and its application in creating high-k materials with superior dielectric properties. High-k materials such as HfO<sub>2</sub>, TiO<sub>2</sub>, and ZrO<sub>2</sub> are critical in the semiconductor industry due to their high dielectric constants and ability to improve device performance. The review highlights how doping these materials can further enhance their electrical, chemical, and physical properties, leading to improved device reliability and efficiency. Various dopants and their effects on material characteristics, including dielectric constant, leakage current, and breakdown voltage, are discussed in detail. This paper concludes that ALD, with its precise control over film thickness and uniformity, is essential for the ongoing advancement of semiconductor technology and the development of next-generation electronic devices.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114454","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":"Densification of ceramics and ceramic-based composites using ultralow temperature sintering (cold sintering): A comprehensive review","authors":"Gecil Evangeline T, Raja Annamalai A","doi":"10.1111/ijac.14996","DOIUrl":"https://doi.org/10.1111/ijac.14996","url":null,"abstract":"<p>This article provides a concise overview of cold sintering, a technique for densification of ceramics and ceramic-based composites at ultralow temperatures. It emphasizes the incorporation of various materials including oxides, fluorides, bromides, carbonates, chlorides, and phosphates during the cold sintering process. Cold sintering achieves densification through high-pressure dissolution and precipitation using liquids like water as a medium. For multi-material devices, this ultralow temperature method offers a promising solution for combining materials with diverse thermal properties leading to novel integrated materials. Numerous materials have been effectively integrated at extremely low temperatures achieving properties comparable to those of traditional methods; this review comprehends their perspective on the wet consolidation mechanism.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120660","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 replacement of silica fume by wollastonite microfibers on ultrahigh performance concrete","authors":"Guanjie Li, Danyang Liu, Ying Liu, Jingwei Wang, Shouyan Xu, Hongtu Xia, Feng Luo","doi":"10.1111/ijac.14990","DOIUrl":"https://doi.org/10.1111/ijac.14990","url":null,"abstract":"<p>Ultrahigh performance concrete (UHPC) is a new type of cement-based composite building material with the characteristics of high strength, high toughness, and high durability. However, the presence of silica fume (SF) will greatly increase the cost of UHPC. Wollastonite microfiber (WF), a microfibrous inorganic mineral powder, has been shown to be effective in improving the mechanical properties of cementitious materials and reducing the cost of UHPC. In this study, a series of UHPC-WF were synthesized via replacing a part of SF with WF. The excellent smooth properties of the WF surface played a lubricating role in the UHPC-WF slurry, resulting in the fluidity of 287.5 mm for UHPC-WF. Furthermore, the synergistic effect of WF and steel fiber played a significant role in UHPC-WF. The flexural strength of UHPC-WF in 3 days and 28 days was 16.4 MPa and 21.6 MPa, respectively, and the compressive strength in 3 days and 28 days was 119.4 MPa and 155.3 MPa, respectively. Meanwhile, the shrinkage strain of UHPC-WF was only 0.13 mm/m in 90 days. This work provides consideration for the innovation of UHPC technology in the future and the research of replacement SF to mineral admixtures in UHPC.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118315","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}
Mohammad Ali Rajabi Chamhaydari, Hajar Ahmadimoghadam, Mohammad Reza Nilforoushan
{"title":"Enhancing hydration resistance and mechanical properties of dolomite refractory through ZnO nanoparticle incorporation","authors":"Mohammad Ali Rajabi Chamhaydari, Hajar Ahmadimoghadam, Mohammad Reza Nilforoushan","doi":"10.1111/ijac.14985","DOIUrl":"https://doi.org/10.1111/ijac.14985","url":null,"abstract":"<p>The study aims to enhance the hydration resistance of dolomite refractory by investigating the influence of ZnO nanoparticles on their physical and mechanical properties. Four samples with varying ZnO concentrations (0, 0.5, 1, and 2 wt%) were prepared. The main identified phases were magnesia (MgO) and lime (CaO). The microstructure of the dolomite refractory shown irregularly shaped grains dispersed within a matrix phase, with an increase in ZnO nanoparticles, leading to larger and more abundant grains. The incorporation of ZnO nanoparticles resulted in improved density, hydration resistance, and cold compressive strength, attributed to a reduction in porosity. The sample containing 2 wt% ZnO nanoparticles displayed the highest cold compressive strength and thermal expansion coefficient compared to the pure sample. The addition of ZnO enhanced the dolomite's compressive strength by approximately 46%. These findings suggest that ZnO nanoparticles can enhance the properties of dolomite refractory, particularly in terms of hydration resistance.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116469","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":"Microwave dielectric properties of Na2O–Ln2O3–MoO3–TiO2 (Ln = Nd, La and Ce) system with low-sintering temperature","authors":"Wen-Bo Li, Li-Xia Pang, Xiao-Long Wang, Wei-Guo Liu, Xiaogang Yao, Huixing Lin, Wen-Feng Liu, Di Zhou","doi":"10.1111/ijac.14983","DOIUrl":"https://doi.org/10.1111/ijac.14983","url":null,"abstract":"<p>This study examines the low-loss and temperature-stable Na<sub>2</sub>O–Ln<sub>2</sub>O<sub>3</sub>–MoO<sub>3</sub>–TiO<sub>2</sub> (Ln = Nd, La and Ce) system, synthesized via a solid-state process at low-sintering temperatures ranging from 840°C to 900°C The structure, microstructure and microwave properties of the Na<sub>0.5</sub>Ln<sub>0.5</sub>MoO<sub>4</sub>–TiO<sub>2</sub> (Ln = Nd, La and Ce) ceramics as a function of the sintering temperature were studied. The results of XRD patterns and microstructure characterization showed that the main phase in compositions belong to tetragonal scheelite and tetragonal structure. The ceramic composition Na<sub>0.5</sub>Ln<sub>0.5</sub>MoO<sub>4</sub>–TiO<sub>2</sub> (Ln = Nd, La and Ce), sintered at 840°C–900°C for 2 hours, demonstrated excellent microwave dielectric properties, exhibiting relative dielectric constant (<i>ε<sub>r</sub></i>) of 13.9–14.4, <i>Q × f</i> value of about 31 100 (at 9.66 GHz) – 48 600 GHz (at 9.33 GHz), and temperature coefficient of –8.1 to –1 ppm/°C. Our work designs temperature-stable microwave dielectric ceramics with low-sintering temperature for LTCC technology applications.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114407","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":"Thermal/mechanical properties of cordierite synthesized using coal gangue as a refractory material","authors":"Guangmao Yan, Lin Chen, Qingwei Jiang, Luyang Zhang, Jiankun Wang, Yunchuan Yang, Zulai Li, Jing Feng","doi":"10.1111/ijac.14987","DOIUrl":"https://doi.org/10.1111/ijac.14987","url":null,"abstract":"<p>Coal gangues i a solid waste during the coal mining process and the accumulation of coal gangue will harm the environment. Therefore, solid waste utilization of coal gangue is required to reduce the environmental damage. In this paper, cordierite ceramics are successfully prepared via a solid-phase sintering using coal gangue, Al<sub>2</sub>O<sub>3</sub>, and MgO as raw materials. The effects of sintering temperatures on the microstructures, phase stability, and thermal properties of ceramics are investigated. The results show that the properties of cordierites prepared at 1200°C are close to those of prepared by the traditional method, and the synthesized ceramics have thermal expansion coefficients (TECs) and conductivity of 4.1–10<sup>−6</sup> K<sup>−1</sup> and 1.72 W·m<sup>−1</sup> K<sup>−1</sup> at 900°C, respectively. The sample prepared at 1200°C has good wear resistance (<i>η</i>) with a wear resistance coefficient of 0.507, and an excellent thermal shock resistance, which can withstand 15 times of cold and hot shocks at 1100°C without any cracks on the surface. This study systematically elucidates the thermal/mechanical properties of the synthesized cordierite, and the feasibility of using coal gangue as raw materials prepared cordierite ceramics as refractory materials. This work presents an effective solution to mitigate the challenge of coal gangue disposal.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113975","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}
James F. Mudd, Jeremy Watts, Jhonathan Rosales, Ryan P. Wilkerson, Brian Taylor, William Fahrenholtz, Gregory Hilmas, Joseph Graham
{"title":"Mechanical properties of MoW–HfN surrogate cermet fuel for nuclear thermal propulsion","authors":"James F. Mudd, Jeremy Watts, Jhonathan Rosales, Ryan P. Wilkerson, Brian Taylor, William Fahrenholtz, Gregory Hilmas, Joseph Graham","doi":"10.1111/ijac.14978","DOIUrl":"https://doi.org/10.1111/ijac.14978","url":null,"abstract":"<p>The mechanical performance of MoW-HfN, a surrogate cermet for MoW-UN Nuclear Thermal Propulsion (NTP) fuel, was characterized from room temperature to 1600°C. The modulus of elasticity and flexure strength were obtained from four-point bend tests. Those tests revealed a loss of stiffness with increasing temperature and systematic increase in ultimate strength up to about 1400°C. This was followed by loss of ultimate strength and the onset of plastic deformation, attributed to the increased ductility of the MoW matrix above 1400°C. Chevron notch tests show that failure originates from features with a critical flaw size of ∼30 εm, which is comparable to the mean particle size of the ceramic phase. X-ray diffraction (XRD) and Williamson–Hall (WH) analysis suggest that residual stress may contribute to the observed strength-versus-temperature behavior.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.14978","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113523","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}
Simone A. S. França, Lisiane N. L. Santana, Miguel A. Rodriguez, Romualdo R. Menezes, Rafaela R. Arimatéia, Hélio L. Lira
{"title":"Ceramic membranes production using quartzite waste for treatment of domestic wastewater","authors":"Simone A. S. França, Lisiane N. L. Santana, Miguel A. Rodriguez, Romualdo R. Menezes, Rafaela R. Arimatéia, Hélio L. Lira","doi":"10.1111/ijac.14986","DOIUrl":"https://doi.org/10.1111/ijac.14986","url":null,"abstract":"<p>In this work, flat ceramic membranes were prepared using ball clay, quartzite waste, and corn starch as porogenic agent. The raw materials were characterized by X-ray fluorescence (EDXRF) and X-ray diffraction (XRD). The compositions were characterized by the following techniques: X-ray diffraction and heating microscopy. The membranes were produced using the uniaxial pressing process and sintered at different temperatures (900, 1000 and 1100°C). Subsequently, they were characterized by X-ray diffraction (XRD), linear shrinkage, apparent porosity, mercury porosimetry, flexural strength, and scanning electron microscopy (SEM). The membrane contents 20 wt.% of corn starch sintered at 1000°C was selected because it has porosity of 35%, pore size of 1.3 µm, flexural strength of 8.6 MPa and permeability of 203 L.h<sup>−1</sup>.m<sup>−2</sup>.bar<sup>−1</sup>. The microfiltration membrane was tested in the treatment of domestic laundry wastewater and showed good decreasing (>91%) of turbidity and clarification of the wastewater.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112988","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}
Wenli Luo, Zhiming Shi, Wenbin Wang, Zhen Liu, Zhiwen Liu
{"title":"Study of phase transformation of calcium silicate using desert sand as raw materials","authors":"Wenli Luo, Zhiming Shi, Wenbin Wang, Zhen Liu, Zhiwen Liu","doi":"10.1111/ijac.14984","DOIUrl":"https://doi.org/10.1111/ijac.14984","url":null,"abstract":"<p>Production of Portland cement consumes a huge amount of silica mineral. The present work aims to introduce desert sand to replace the natural mineral to achieve green manufacturing of silicate cement clinker, as well as further decreasing the synthesis temperature and increasing the production efficiency. The effects of desert sand, industrial quartz and high-purity quartz as raw materials, and Al<sub>2</sub>O<sub>3</sub> and Fe<sub>2</sub>O<sub>3</sub> as additives on phase transformation and microstructure of calcium silicate powder were comparably investigated using X-ray diffractometer, differential scanning calorimeter, and scanning electron microscopy. Results show that the main phases of all samples with different raw materials and additives were 3CaO·SiO<sub>2</sub> (C<sub>3</sub>S) and 2CaO·SiO<sub>2</sub> (C<sub>2</sub>S). In which, the samples prepared using desert sand had the lowest phase transformation temperature for C<sub>2</sub>S and C<sub>3</sub>S. When adding Al<sub>2</sub>O<sub>3</sub> and Fe<sub>2</sub>O<sub>3</sub>, the phase transformation temperatures of C<sub>2</sub>S and C<sub>3</sub>S further decreased, which were 1032.5°C and 1270.9°C, respectively, meanwhile phase content reached the maximum (C<sub>2</sub>S of 65.6 wt.% and C<sub>3</sub>S of 61.2 wt.%). In addition, the most uniformly and finely distributed crystalline phases formed at an optimal calcination temperature of 1350°C. This is beneficial for reducing production costs, saving mineral resources, and promoting the sustainable development of the cement industry.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112989","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}