International Journal of Applied Ceramic Technology最新文献

{"title":"In situ synthesized carbide for reaction joining C/C composites by spark plasma sintering","authors":"Ben Chai,&nbsp;Xincheng Wang,&nbsp;Laifu Wu,&nbsp;Xueke Feng,&nbsp;Li Fu,&nbsp;Jian Qin","doi":"10.1111/ijac.70022","DOIUrl":"https://doi.org/10.1111/ijac.70022","url":null,"abstract":"<p>C/C composites were reaction-joined with Ti/Zr powder as interlayer by spark plasma sintering in this study. Ti powder in situ reaction joint was achieved at 1600°C for 30 min with pressure of 50 MPa, while Zr powder in situ reaction joint was accomplished at 1800°C for the same time and pressure. Both their sintering temperature was below melting point. Microstructure and mechanical properties were investigated. TiC or ZrC ceramics interlayer were in situ synthesized in the reaction joint, corresponding average shear strength was 17.78 ± 1.23 and 16.56 ± 1.14 MPa, respectively. The fracture occurred along the C/C interface and inside the ceramics interlayer, and the center layer with inadequate carbonization contributed to joint strength due to its better plasticity.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196959","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":"Spark plasma sintering using siliceous waste concrete powder","authors":"Yasuyuki Kanda","doi":"10.1111/ijac.70019","DOIUrl":"https://doi.org/10.1111/ijac.70019","url":null,"abstract":"<p>Spark plasma sintering (SPS) was performed using siliceous waste concrete powder for the effective utilization of waste concrete. The sintering temperature of the SPS compacts was optimized to improve their mechanical properties. Siliceous waste concrete powder was prepared using a pot-milling procedure of waste concrete. SPS was conducted by varying the sintering temperature from 1173 to 1273 K. Consequently, the Vickers hardness (HV), flexural modulus, and flexural strength were maximized at a sintering temperature of 1248 K. At a sintering temperature of 1248 K, the HV, flexural modulus, and flexural strength were 604, 66.3 GPa, and 75.0 MPa, respectively. Thus, the proposed SPS compact possessed twice the flexural strength defined in the ISO 13006 standard (35 MPa), which classifies ceramic tiles. Furthermore, diopside synthesis was detected owing to the decarburization of calcite during sintering. Therefore, siliceous waste concrete powder is a promising raw material for ceramics processed using SPS.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.70019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196893","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":"Impact of thermal oxidation on morphological characteristics of cordierite and attapulgite substrate materials","authors":"Bowen Zhao,&nbsp;Tao Peng,&nbsp;Xiaoxue Zhang,&nbsp;Junpeng Li,&nbsp;Ye Liu","doi":"10.1111/ijac.70018","DOIUrl":"https://doi.org/10.1111/ijac.70018","url":null,"abstract":"<p>The diesel particulate filter (DPF) is one of the most effective devices for reducing particulate emission, where the continuous DPF regeneration is necessary for maintaining filter efficiency. There is currently a lack of investigation on the effect of thermal oxidation on morphological characteristics of substrate materials. In this study, the cordierite (Cord) and attapulgite (ATP) powders were mixed with CeO₂, serving as substrate and catalyst, respectively. The soot particles were collected from a heavy-duty diesel engine. Through the thermal oxidation from 450°C to 650°C, it was found that the special fibrous or rod-like structure of ATP produced more pore volume and surface area, as well as an efficient heat recovery mechanism after thermal oxidation. The block-like structure of Cord only acted as a substrate, maintaining its intact crystalline structure during thermal oxidation. Notably, the oxidation reactivity of ATP/CeO₂/Soot was higher than Cord/CeO₂/Soot because the ATP generated more catalyst active sites and sufficient contact area for the soot-oxygen-CeO₂ reaction. This study expands the potential application of ATP as DPF substrate material.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196827","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":"Role of active element Al in the interfacial bonding of sapphire by ultrasonic-assisted soldering using Sn-based alloys","authors":"Xinran Ma,&nbsp;Yuanhang Xia,&nbsp;Mingda Song,&nbsp;Wei Chen,&nbsp;Jiuchun Yan","doi":"10.1111/ijac.70015","DOIUrl":"https://doi.org/10.1111/ijac.70015","url":null,"abstract":"<p>Ultrasonic-assisted soldering using Al-activated Sn-based alloys holds great potential for low-temperature joining of sapphire, but its widespread application is limited by reliability issues associated with excessive Al content. In this study, the sapphire was joined with Sn–Al solder coatings and the commercial Sn–3Ag–0.5Cu filler at 250°C. The Sn–2Al coating was prepared by ultrasonic-assisted dipping, followed by rinsing in Sn–1Al, Sn–0.5Al, and Sn to reduce Al. Joints with Sn–2Al, Sn–1Al, and Sn–0.5Al coatings were successfully formed with the Sn–3Ag–0.5Cu filler, whereas those with Sn-rinsed coatings failed. Al-related precipitates, including α-Al, Ag–Al, and Cu–Al intermetallic compounds (IMCs), were observed in the bond metal layer. As Al content decreased, α-Al and Ag–Al phases progressively diminished, whereas Cu–Al IMCs remained. The Sn–2Al coating yielded joints with a shear strength of 43.1 MPa with primarily ductile fracture, whereas Sn–0.5Al gave only 12.8 MPa with brittle fracture. The performance degradation was primarily driven by the reduced interfacial Al segregation, which resulted from the consumption of active Al through reactions with Cu and Ag at the soldering temperature. These results demonstrated that Al content could be optimized while preserving joint strength, through the fine-tuned formation of Al segregation and strengthening phases of Ag–Al and Cu–Al IMCs.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196810","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":"Photocatalytic performance and characterization of tungsten oxide powders recycled from cutting tool wastes","authors":"Nusret Kaya,&nbsp;Ahmet Yavaş,&nbsp;Mücahit Sütçü,&nbsp;Merve Karaman","doi":"10.1111/ijac.70017","DOIUrl":"https://doi.org/10.1111/ijac.70017","url":null,"abstract":"<p>In this study, with recycling process from waste sludge formed by the wear of WC cutting tools used as a cutting tool in the machining industry has been presented. WC waste transformed to WO₃₋<i>_x</i> have been characterized by the X-ray diffraction, and scanning electron microscopy–EDS analysis. The formation of WO₃₋<i>_x</i> from the waste WC bulk materials was further confirmed by Fourier transform infrared spectroscopy and Raman spectroscopy. To understand its photocatalytic performance, the photophysical properties of the material were investigated with UV–vis. The photocatalytic degradation of organic impurities in the water from a recycled material was carried out. According to the results, the best photodegradation efficiency was obtained with the 0.4 × 10⁻⁵M catalyst concentration. The maximum degradation efficiency reached 93.34% for an initial MB concentration of 0.4 × 10⁻⁵ M using 7.5 mg catalyst (0.25 g·L⁻¹), with an apparent reaction rate constant (<i>k</i>_app) of 4.401 × 10⁻¹ h⁻¹. The presence of the WO₃₋<i>x</i> catalyst enhanced the degradation rate by up to 6 times compared to photolysis. These findings demonstrate the high photocatalytic performance of WO₃₋<i>x</i> obtained from industrial waste, presenting a promising solution for wastewater treatment.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.70017","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196825","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":"Particle size effects on the processing of textured PMN-PZT ceramics","authors":"Beecher H. Watson III,&nbsp;Jacob Schliesser,&nbsp;Christopher D. Eadie,&nbsp;Matthew Michie,&nbsp;Mark A. Fanton,&nbsp;Richard J. Meyer Jr.","doi":"10.1111/ijac.70013","DOIUrl":"https://doi.org/10.1111/ijac.70013","url":null,"abstract":"<p>Current generation textured ceramics synthesized for piezoelectric applications are generally processed by a shear-inducing technique, such as tape casting, which orients anisotropically shaped particles to seed templated grain growth and maximize the piezoelectric (<i>d_ij</i>) coefficient. This work explores how changes in particle size distribution during ball milling of slurries impacts slurry rheology, texture fraction after thermal processing, and piezoelectric coefficient (<i>d</i>₃₃) of the final, sintered ceramic. While ball milling (&gt;72 h) of slurries did have the positive effect of further reducing the median particle size, unfortunately the slurry was observed to change from shear-thinning to shear-thickening in the shear rate range that is produced in a tape casting environment. The slurry's shear-thickening behavior at extended mill times was found to be reversible by using additional dispersant in the slurry composition, which ultimately resulted in textured ceramics with Lotgering factors ranging from 0.94 to 0.97 and piezoelectric coefficient <i>d</i>₃₃ enhancements as high as 764–807 pC/N. This work highlights the importance of careful control over slurry composition and rheology to maximize template alignment during casting needed to produce high-quality textured piezoelectric ceramics.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.70013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196641","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":"Electrochemical reduction-induced phase transformation and lattice modification in cubic zirconia (8YSZ)","authors":"Christian Bechteler,&nbsp;Richard I. Todd","doi":"10.1111/ijac.70011","DOIUrl":"https://doi.org/10.1111/ijac.70011","url":null,"abstract":"<p>This study investigates the effects of electrical loading on cubic 8YSZ (8 mol% yttria-stabilized zirconia) under different atmospheric conditions with a focus on electrical and structural changes, lattice modifications, and the formation of new phases. Upon applying an electric field during various atmospheric transitions from oxygen to air to argon or nitrogen, an increase in oxygen extraction and enhanced electrical conductivity was linked to the formation of an atmosphere-dependent defective FCC rocksalt phase, ZrO in Ar, and Zr(O,N) in nitrogen, as confirmed by EDS, X-ray diffraction, and Raman spectroscopy, with lattice parameters consistent at approximately 0.458 nm. The microstructure of the electrically loaded material showed elongated precipitates of this new phase, particularly along grain boundaries, which were a few tens to hundreds of nanometers in size. Furthermore, dopant segregation and microstructural instability due to this lattice modification and phase transformation were observed. Comparison to the behavior of tetragonal 3YSZ revealed significant differences between the two compositions. These findings highlight the role of electrochemical reduction in altering material properties, with potential implications for flash sintering and energy applications like solid oxide fuel and electrolyzer cells.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.70011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196612","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":"Effect of nanosilica and nanoboehmite in the pyroplastic deformation of a porcelain tile paste","authors":"Vicente de Lorenzi,&nbsp;Nikelli da Rosa Rabelo,&nbsp;José Eduardo Tavares Cordioli,&nbsp;Alexandre Zaccaron,&nbsp;Alexandre Gonçalves Dal-Bó,&nbsp;Adriano Michael Bernardin,&nbsp;Michael Peterson","doi":"10.1111/ijac.70008","DOIUrl":"10.1111/ijac.70008","url":null,"abstract":"<p>Porcelain tiles are low-porosity ceramic coatings, formed by a mixture of clay minerals, quartz, and feldspars, and fired at temperatures close to 1200°C with formation of a liquid phase that can result in unwanted pyroplastic deformations. In addition, the rectangular formats, large dimensions, reduced thicknesses, and fast thermal cycles worsen the deformations. Therefore, in this study, silica and boehmite-based nanoparticles were used to reduce the incidence of pyroplastic deformation in porcelain tile. Ten compositions were studied using mixture design, where the raw materials, nano-silica and nano-boehmite were the factors, independent variables. The response, dependent variable, was the pyroplastic deformation. The chemical composition of the raw materials and the size and specific surface area of the nanoparticles were determined. The mixture design results were evaluated by ANOVA and response surfaces, showing the effect of nanoparticles on the pyroplastic deformation of porcelain tiles. The composition with the lowest pyroplasticity index compared to the standard was selected, simulating an industrial process. In sequence, the pyroplasticity index was determined and evaluated by Tukey's test. The phase composition was analyzed by XRD after firing and was quantified by the Rietveld method. In addition, rational analysis was performed to estimate the glassy phase and finally the activation energy. There was 23.8% reduction in pyroplastic deformation of the porcelain tiles at 1210°C when 5% nano-boehmite was added to the paste. The chemical composition of the glassy phase was a key role for the pyroplastic of the samples. The activation energy prior to the maximum densification of the samples increased by 43.8%, therefore forming a higher energy barrier against the deleterious effects of pyroplastic deformation.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.70008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144814969","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":"Advances in preparation techniques for high-purity silicon carbide ceramics","authors":"Wenlong Zhang,&nbsp;Yi Chen,&nbsp;Yiming Dong,&nbsp;Jiasen Yang,&nbsp;Yuhan Jian,&nbsp;Jingjing Wang,&nbsp;Yuhai Lu,&nbsp;Yang Li","doi":"10.1111/ijac.70012","DOIUrl":"https://doi.org/10.1111/ijac.70012","url":null,"abstract":"<p>High-purity silicon carbide (SiC) ceramics are critical materials for advanced applications in semiconductors, aerospace, and chemical industries due to their exceptional properties, such as high thermal conductivity, chemical stability, and mechanical strength. With increasing demands for high-performance and contamination-free components, the development of efficient and scalable preparation methods for high-purity SiC ceramics has become a global research focus. This paper summarizes the advancements in manufacturing techniques for high-purity SiC ceramics, including recrystallization sintering, pressureless sintering (PS), hot pressing (HP), spark plasma sintering (SPS), and additive manufacturing (AM). The fundamental sintering mechanisms, processing parameters, material characteristics and associated challenges of each method are discussed. Finally, this paper outlines the current limitations and provides forward-looking strategies to meet the growing demand for high-purity and high-performance SiC ceramics in cutting-edge technologies.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196333","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":"Synthesis of near-spherical α-Si3N4 powder via carbon-assisted crystallization of amorphous Si3N4 powder","authors":"Zunlan Hu,&nbsp;Binbin Fan,&nbsp;Tianci Wang,&nbsp;Zhipeng Xie","doi":"10.1111/ijac.70014","DOIUrl":"https://doi.org/10.1111/ijac.70014","url":null,"abstract":"<p>This study presents a scalable method for fabricating near-spherical silicon nitride (Si₃N₄) particles with a high α phase content. Amorphous Si₃N₄ powder was synthesized using the diimide synthesis method, mixed with graphite powder as a carbon source, and calcined at 1550°C to produce α-Si₃N₄ powder. The effects of varying carbon contents on the phase composition and microstructure of the resulting products were investigated. In the presence of carbon, the Si₃N₄ particles exhibit a near-spherical morphology, with a reduction in the fraction of whisker-like structures. The products show a complex, nonuniform structure with a broad particle size distribution and varying structural characteristics when excessive powder is added. Graphite powder not only provides nucleation sites but also plays a critical role in the phase transition from amorphous Si₃N₄ to the α phase. The nucleation and growth of α-Si₃N₄ are facilitated by the presence of SiO(g), which is reduced through interactions with C(s) or CO(g). It indicates that carbon accelerates the Si₃N₄ phase transition through the vapor-solid mechanism, which is the key to inhibiting the whisker growth and controlling the particle size of α-Si₃N₄ powder.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 6","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197228","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}