International Journal of Applied Ceramic Technology最新文献

{"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":"https://doi.org/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":"Corrosion behavior of novel Al2O3‒La2O3-based HVOF composite coatings","authors":"Khushneet Singh,&nbsp;Avi Gupta,&nbsp;Mir Irfan Ul Haq,&nbsp;Sanjay Mohan,&nbsp;Deepak Kumar,&nbsp;Mohd Farooq Wani","doi":"10.1111/ijac.70010","DOIUrl":"https://doi.org/10.1111/ijac.70010","url":null,"abstract":"<p>Corrosion failures in steel components presents a major challenge across various industries, resulting in high maintenance costs and reduced equipment lifespan, particularly in machine parts exposed to humid and saline environments. This study focuses on the development of protective coatings using Al₂O₃ as the base material and La₂O₃ as a reinforcement, with varying weight percentages (1.2%, 1.6%, and 1.8%), applied via high velocity oxy-fuel spraying on stainless steel (SS304) substrates. The corrosion resistance of these coatings was evaluated using a potentiostat in a 3.5% NaCl solution to simulate a harsh saline environment. Electrochemical behavior was analyzed through Tafel, Bode, and Nyquist plots, while electrochemical impedance spectroscopy data were further assessed using the equivalent electrical circuit model method. The experimentation revealed that the S3 coating (98.4% Al₂O₃‒1.6% La₂O₃) exhibited the lowest corrosion rate and highest charge transfer resistance, which depicts its superior corrosion protection. Scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction analyses confirmed the presence of α-Al₂O₃ in the La₂O₃-doped coatings, which plays a crucial role in reducing porosity and improving corrosion resistance. The results obtained in this work demonstrates that the Al₂O₃‒La₂O₃ composite coatings significantly enhances the corrosion resistance of steel.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144815159","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":"Synergistic effects in ground granulated blast furnace slag‒steel slag-based geopolymer","authors":"Suxi Wang,&nbsp;Jialong Lin,&nbsp;Shikun Chen,&nbsp;Wenxin Wang,&nbsp;Yajun Zhang,&nbsp;Dawei Chen,&nbsp;Shenhao Ye,&nbsp;Qiang Li,&nbsp;Yi Liu,&nbsp;Dongming Yan","doi":"10.1111/ijac.70009","DOIUrl":"https://doi.org/10.1111/ijac.70009","url":null,"abstract":"<p>To promote the efficient and high-quality use of steel slag (SS), a geopolymer was innovatively developed from ground granulated blast furnace slag (GGBFS) and SS using an optimized alkali equivalent method. As SS-based geopolymer content increases, trends in compressive strength and total admittance modulus of the GGBFS‒SS-based geopolymer reveal distinct synergistic effects. To investigate these effects, electrochemical impedance spectroscopy, a relatively novel technique, was employed alongside other analytical methods. From a physical perspective, the synergistic effects manifest through the encapsulation of C-S-H gels by C-A-S-H and N-A-S-H gels, the filling of microdefects by C-S-H gels, microdefects truncation, and reinforcement by SS microaggregates. Chemically, the effects include the microaggregation of inert components and competitive activation induced by hydrated Ca(OH)₂. However, these chemical effects have a dual nature, making it unclear whether they positively or negatively impact the binary geopolymer. Thus, the physical synergistic effects are considered predominant in the GGBFS‒SS-based geopolymer.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144815244","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":"Tailored mechanical properties of silicon nitride–hydroxyapatite composite scaffolds for biomedical applications","authors":"Guido de La Torre Olvera,&nbsp;Miroslav Hnatko,&nbsp;Magdaléna Precnerová,&nbsp;Ivo Dlouhý,&nbsp;Monika Tatarková","doi":"10.1111/ijac.70007","DOIUrl":"https://doi.org/10.1111/ijac.70007","url":null,"abstract":"<p>Silicon nitride (Si₃N₄)–hydroxyapatite (HA) composite scaffolds for bone replacement were developed via pressure infiltration of HA into a porous Si₃N₄ matrix. The effect of replication processing parameters (SiO₂ content, number of infiltrations, and calcination temperature) on the structure and mechanical properties of the porous Si₃N₄ matrix was investigated and compared to human trabecular bone. All fabricated Si₃N₄ matrices exhibited interconnected porosity comparable to trabecular bone. A matrix processed with double infiltration with 15 wt.% SiO₂ suspension, followed by calcination at 1100°C, demonstrated the highest compressive strength. Subsequent pressure infiltration with HA significantly enhanced both the compressive (∼ twofold) and tensile strength (&gt; quadruple) of this matrix, yielding a composite scaffold with a compressive strength similar to that of human trabecular bone, while maintaining comparable microporosity.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144815173","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":"Influence of Ca2Mg2Al28O46 on the lightweight and corrosion resistance of corundum–spinel–calcium aluminate refractory","authors":"Yuchi Liu,&nbsp;Jialu Ma,&nbsp;Chongqian Wang,&nbsp;Yue Hu,&nbsp;Yun Liu,&nbsp;Hongfeng Yin,&nbsp;Yun Tang,&nbsp;Xiaohu Ren,&nbsp;Yalou Xin,&nbsp;Hudie Yuan","doi":"10.1111/ijac.15195","DOIUrl":"https://doi.org/10.1111/ijac.15195","url":null,"abstract":"<p>Following the comminution of the in-house synthesized Ca₂Mg₂Al₂₈O₄₆ (C₂M₂A₁₄), it was utilized as an aggregate in the formulation of lightweight corundum–spinel–calcium aluminate refractories. The performance of the lightweight refractory, produced with varying particle sizes and proportions of C₂M₂A₁₄, was systematically evaluated through phase composition analysis, microstructural observations, and thermodynamic calculations. Furthermore, an investigation was conducted on the corrosion behavior of various phases within the in-house synthesized C₂M₂A₁₄ aggregate and cement materials to evaluate the influence of C₂M₂A₁₄ on the corrosion resistance of lightweight corundum–spinel–calcium aluminate refractories. The findings indicate that C₂M₂A₁₄ undergoes further decomposition during the firing process, resulting in a decrease in the bulk density of the refractory. Moreover, the presence of calcium aluminate phases within C₂M₂A₁₄ is identified as the primary factor contributing to its resistance to corrosion from cement materials.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144815080","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":"Synergistic effects of grain orientation and microstructure modification in PMN-PT electrocaloric ceramics","authors":"Li-Qian Cheng,&nbsp;Zhiping Wang,&nbsp;Zhenhua Ma,&nbsp;Xinrui Dong,&nbsp;Jiaoyang Yan,&nbsp;Weibin Cai,&nbsp;Kai Chen","doi":"10.1111/ijac.70005","DOIUrl":"https://doi.org/10.1111/ijac.70005","url":null,"abstract":"<p>Grain orientation engineering is an effective approach to tailor the electrical properties in ferroelectric ceramics. Although it was found that the electrocaloric (EC) performance can be affected due to grain orientation design in literatures, the grain microstructure modification in textured EC ceramics was rarely emphasized. Here, 0.90 Pb(Mg_1/3Nb_2/3)O₃‒0.10PbTiO₃ (PMN-10PT) ceramics with &lt;111&gt; orientation were fabricated. A combination approach of texturing and grain structure modification was designed. An optimization of two-step sintering process was utilized to obtain the &lt;111&gt;-textured ceramics with dense body and relatively uniform grain structures. Compared to normal (single-step) sintered ceramics, the dielectric breakdown strength of the &lt;111&gt;-textured PMN-10PT ones sintered by two steps enhanced from 53 to 69 kV cm⁻¹. Especially, the &lt;111&gt;-textured ceramics synthesized via 1230°C/1200°C sintering process exhibited an enhanced adiabatic temperature Δ<i>T</i> change of 0.88 K when the applied field was 35 kV cm⁻¹, which improved EC performance by 39.7% compared to randomly oriented ceramics, and was also 11.4% higher than that of the conventionally sintered textured samples. This work analyzed the synergistic effect of texture and grain microstructure on the EC performance of PMN-PT ceramics, and provides a facile sintering method to further enhance the EC property of ferroelectric ceramics.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144815081","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 K2O/Na2O addition on the microstructure and mechanical properties of CaO-MgO-Al2O3-SiO2 glass ceramic","authors":"Hong-Yang Wang,&nbsp;Shu-Qiang Jiao,&nbsp;Guo-Hua Zhang","doi":"10.1111/ijac.70006","DOIUrl":"https://doi.org/10.1111/ijac.70006","url":null,"abstract":"<p>This work studied the effects of types of flux (K₂O and Na₂O) and sintering temperature on the microstructure and mechanical properties of augite-based glass ceramics (GCs). Fine glass powder (<i>D</i>₅₀= 1.07 µm) was used as the starting material for preparing the GCs. The porosity of the samples decreased by increasing the sintering temperature from 850°C to 925°C, and a further increase in the sintering temperature to 950°C caused an increase in porosity from 0.2 to 1.8 vol%. The substitution of K₂O for Na₂O reduced the densification degree of GC. Nevertheless, K₂O refined the grain size of augite to 24–33 nm, which enhanced the hardness of GC. Both Na₂O-containing and K₂O-containing GC prepared at 925°C showed their highest bending strength (GC-Na: 225 MPa, GC-K: 215 MPa) and Vickers hardness (GC-Na: 8.39 GPa, GC-K: 8.41 GPa).</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144815079","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":"Achievement of high energy density and efficiency in Bi(Mg0.5Hf0.5)O3 modified Ba0.55Sr0.45TiO3 ceramics","authors":"Ihsan Ullah,&nbsp;Abdul Manan,&nbsp;Rajwali Khan,&nbsp;Maqbool Ur Rehman,&nbsp;Raz Muhammad,&nbsp;Gang Liu,&nbsp;Amjad A. Almunyif,&nbsp;Shabir Ali","doi":"10.1111/ijac.70004","DOIUrl":"https://doi.org/10.1111/ijac.70004","url":null,"abstract":"<p>(1 ‒ <i>x</i>)Ba_0.55Sr_0.45TiO₃‒<i>x</i>Bi(Mg_0.5Hf_0.5)O₃ [(1 ‒ <i>x</i>)BST‒<i>x</i>BMH] (<i>x</i> = 0, 0.05, 0.10, 0.15, and 0.20) ceramics were fabricated through the well-known low-cost solid-state mix oxide sintering method. The physical and electrical properties were investigated for all ceramics sintered at 1350°C/2 h. X-ray diffraction data analysis revealed single Perovskite phase with pseudocubic symmetry for all compositions. The microstructure examination revealed densely packed grains with lowest average grain size of 0.70 µm for <i>x</i> = 0.15. BMH doping lowered the electrical conductivity that has significant effect on the breakdown voltage with increased activation energy. High recoverable energy storage density ∼4.69 J/cm³ and high efficiency ∼91% at an electric field ∼450 kV/cm is achieved for 0.85BST−0.15BMH ceramic. Furthermore, 0.85BST−0.15BMH ceramic possess fast discharge time of ∼40 ns and a high power density of 122 MW/cm³ at 180 kV/cm. These properties reveal that 0.85BST−0.15BMH ceramic is a potential candidate for power electronic capacitor applications working in high-temperature condition.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.70004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144814713","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":"Wave-absorbing porous ceramics from lead–zinc tailings and its synergistic regulation of multiscale properties","authors":"Liping Cao,&nbsp;Yuejing Bin,&nbsp;Xiaofeng Cai,&nbsp;Tongming Su,&nbsp;Xingling Xie,&nbsp;Liuyun Chen,&nbsp;Zuzeng Qin","doi":"10.1111/ijac.70002","DOIUrl":"https://doi.org/10.1111/ijac.70002","url":null,"abstract":"<p>In this study, the structure‒property relationships of lead‒zinc tailing-based porous ceramics prepared via gel-casting were systematically investigated, with a focus on the influence of solid loading. Rheological characterization revealed a dual-stage transition from shear-thinning to shear-thickening within a shear rate range of 0–120 s⁻¹. Microstructural analysis revealed that increasing the solid loading significantly reduced the interparticle spacing, promoted sintering densification and homogenized the pore size distribution. At a solid loading of 50 vol%, the optimal pore topology (fractal dimension <i>D</i> = 1.382, pore shape factor <i>R</i> = 1.242) corresponds to a maximum Weibull modulus of 26.15, confirming a highly uniform defect distribution. Further analysis revealed enhanced dielectric responses: the real permittivity increased from 2.441 to 3.768, whereas the dielectric loss tangent increased from 0.06703 to 0.1692, which intensified the interfacial polarization and defect-induced conduction loss. In the X-band (8.2–12.4 GHz), the ceramics demonstrated exceptional electromagnetic wave attenuation performance. When the solid loading is 50–55 vol%, the minimum reflection loss (RL_min) reaches –29.39 dB (50 vol%) and –46.44 dB (55 vol%), with effective absorption bandwidths (RL ≤ –10 dB) of 4.2 and 4.0 GHz, respectively. This performance optimization stems from synergistic impedance matching and multimechanism energy dissipation.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144814710","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":"Development of a reaction bonding method for bonding silicon carbide using ceramic suspensions","authors":"Rodrigo Orta-Guerra,&nbsp;Olivia Brandt,&nbsp;Averyonna Kimery,&nbsp;Edwin S. Romero,&nbsp;Jeffrey P. Youngblood,&nbsp;Rodney W. Trice","doi":"10.1111/ijac.70003","DOIUrl":"https://doi.org/10.1111/ijac.70003","url":null,"abstract":"<p>Bonding ceramic-based components is desired to create more complex assemblies. In this work, a method for bonding sintered SiC components via reaction bonding based on SiC/carbon black (CB) ceramic suspensions was developed. Four-point flexural testing was used to evaluate the strength of the bond. The effect of bond thickness and temperature on strength was evaluated. The SiC/CB 37 vol% suspension, with a polyethyleneimine content of 1.7 wt% and a pH between 5 and 7, displayed suitable rheology for slurry casting on SiC. At room temperature, a bond thickness of 100 ± 6 µm displayed the highest flexural strength (242 ± 35 MPa). Ten specimens with a 60 ± 4 µm bond thickness were tested at room temperature and 1200°C, with strengths of 229 ± 50 MPa and 278 ± 45 MPa measured, respectively. The presence of SiC in the bond area was verified and quantified with X-ray diffraction, energy-dispersive X-ray spectroscopy, and image analysis.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 5","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144814709","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}