International Journal of Applied Ceramic Technology最新文献

{"title":"Fracture toughness reinforcement on α-cristobalite-precipitated 3/2-mullite","authors":"Ren Iwaya,&nbsp;Kenji Shinozaki,&nbsp;Yuhki Toku,&nbsp;Yang Ju,&nbsp;Yasuhiro Kimura","doi":"10.1111/ijac.15144","DOIUrl":"https://doi.org/10.1111/ijac.15144","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, it is attempted to improve the fracture toughness of 3/2-mullite (3Al₂O₃ 2SiO₂ or Al₆Si₂O₁₃) by precipitating α-cristobalite. All specimens were prepared from raw-alumina (Al₂O₃) and raw-silica (SiO₂) powders using spark plasma sintering. Excess raw-silica over the ideal composition of 3/2-mullite was added to the powders to produce α-cristobalite precipitated in the 3/2-mullite matrix. The fracture toughness increased to a maximum of 2.60 MPa m^0.5 with 31 vol% α-cristobalite. The precipitation reinforcement can be explained by an analogy to the residual stress effect based on the conventional crack-tip shielding model in particle-dispersed composite. This finding reinforces the fracture toughness based on the precipitated phase in the composite rather than using conventional additives.</p>\u0000 </div>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197085","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":"Tribological properties of HVOF sprayed WC composite coatings by simulating plastics-processing conditions","authors":"Wangping Wu,&nbsp;Sheng Lin,&nbsp;Qinqin Wang,&nbsp;Meng Wu,&nbsp;Zhizhi Wang","doi":"10.1111/ijac.15148","DOIUrl":"https://doi.org/10.1111/ijac.15148","url":null,"abstract":"<p>Glass fiber(GF)-reinforced polymers can cause vigorous wear for the screws and barrels in the plasticizing units of injection molding machines. The three types of WC composite coatings were selected to spray on 42CrMo steel by high-velocity oxygen fuel spraying process. The designed PPS-40%GF pins were used to simulate the tribological system. Against PPS-40%GF pins, the wear rates of WC-12Co, WC-20Cr₃C₂-7Ni, and WC-10Co-4Cr coatings were 0.014 × 10⁻⁹, 0.053× 10⁻⁹, and 0.097 × 10⁻⁹ mg/mm, respectively. The corresponding wear rates for PPS-40%GF tribo-pairs were 0.119 × 10⁻⁹, 0.102 × 10⁻⁹, and 0.079 × 10⁻⁹ mg/mm, respectively. The wear resistance of the coatings was ordered of WC-12Co &gt; WC-20Cr₃C₂-7Ni &gt; WC-10Co-4Cr coatings. The wear mechanisms of the coatings were studied and addressed.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197418","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":"Thermophysical properties and CMAS corrosion resistance of a novel high-entropy RE monosilicate as T/EBC materials","authors":"Qungong He,&nbsp;Qiongyuan Zhang,&nbsp;Chao Wang,&nbsp;Yu Huang,&nbsp;Bing He,&nbsp;Haiyang Wang,&nbsp;Yusheng Wu","doi":"10.1111/ijac.15147","DOIUrl":"https://doi.org/10.1111/ijac.15147","url":null,"abstract":"<p>High-entropy design is an attractive strategy to improve the comprehensive performances of RE₂SiO₅ as next-generation thermal/environmental barrier coating (T/EBC) materials for protecting SiC-based ceramic composites (SiC-CMCs) in the hot section of gas turbine engines. Herein, we designed a novel high-entropy RE monosilicate ((6RE_1/6)₂SiO₅) by co-doping the Sc, Yb, Tm, Er, Y, and Dy elements to synergistically improve thermophysical properties and molten calcium–magnesium–alumina–silicate (CMAS) corrosion resistance. The results revealed that as-prepared (6RE_1/6)₂SiO₅ had an ultra-low thermal conductivity (1.22–1.74 W·m⁻¹·K⁻¹), and a matched coefficient of thermal expansion ((4.57–5.05) × 10⁻⁶ K⁻¹) with SiC-CMCs in the testing temperature range. Moreover, it showed an excellent ability against CMAS corrosion at 1300°C and 1500°C. The thicknesses of reaction product layer were about 44 and 102 µm after CMAS corrosion at 1300°C for 48 h and 1500°C for 24 h, respectively. All of the above results identify that as-prepared (6RE_1/6)₂SiO₅ will be a suitable candidate as next-generation T/EBC for protecting SiC-CMCs.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197420","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 insulation performance of Ce-Y co-doped ZrO2 solid solutions under HPHT conditions","authors":"Xiong Xiao,&nbsp;Shilin Shui,&nbsp;Peng Yang,&nbsp;Duanwei He,&nbsp;Xiuyan Wei,&nbsp;Zuguang Hu,&nbsp;Jianyun Yang,&nbsp;Guodong (David) Zhan","doi":"10.1111/ijac.15128","DOIUrl":"https://doi.org/10.1111/ijac.15128","url":null,"abstract":"<p>This study investigates the thermal insulation performance of CeO₂ and Y₂O₃ co-doped ZrO₂ solid solutions cerium-yttria co-doped stabilized zirconia (CYZ), prepared via the solid-state reaction method. A comparative assessment was conducted between CYZ and Y₂O₃-ZrO₂ solid solutions yttria-stabilized zirconia (YSZ) under 10 GPa pressure conditions. The results reveal that the temperature change efficiency of CYZ is significantly enhanced, compared to YSZ. Under equivalent heating power conditions, the maximum temperature differential within the cavity for CYZ (with 25 wt.% CeO₂ doping) reached 300°C, marking a 20% improvement over YSZ. This implies that employing CYZ as an insulation material could reduce heating energy consumption by approximately 20%. The notable lattice distortion induced by CeO₂ incorporation enhances phonon scattering under high-pressure high-temperature conditions, effectively reducing heat transfer. Furthermore, the Debye temperature of CYZ was determined to be approximately 800°C under 10 GPa compression. Above this temperature, CYZ exhibits a characteristic 1/T dependence, with its thermal insulation performance improving as temperature increases, whereas YSZ demonstrates minimal variation in its insulation characteristics. And leveraging the excellent high-temperature thermal insulation properties of CYZ, it is expected to achieve cavity temperatures exceeding 2500°C under 10 GPa pressure.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197419","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":"A comparative study on microstructure evolution and mechanical properties of two ceramic fiber fabrics: Effects of thermal treatment","authors":"Le Fu,&nbsp;Zihua Lei,&nbsp;Mingxi Deng,&nbsp;Wenjun Yu","doi":"10.1111/ijac.15142","DOIUrl":"https://doi.org/10.1111/ijac.15142","url":null,"abstract":"<p>Owing to their superior mechanical properties and low thermal conductivity, oxide ceramic fabrics (OCFs) containing an amorphous phase exhibit significant potential as thermal insulation material. However, the amorphous component is metastable, necessitating an investigation into the thermal stability of OCFs. Here, we comparatively investigated the microstructure and mechanical properties of two OCFs after thermal treatments. One OCF was composed of a ternary Al₂O₃-SiO₂-B₂O₃ glass, while the other binary OCF comprised Al₂O₃ nanocrystallites embedded within a SiO₂ glass matrix. Results demonstrated that the crystallization of Al₄B₂O₉ occurred during the thermal treatment of the ternary OCFs, subsequently transforming into Al₁₈B₄O₃₃. The SiO₂ persisted as a glass matrix up to 1300°C. In contrast, the binary OCF retained its microstructure up to 1100°C. After being treated at 1300°C, the binary OCF predominantly consisted of mullite micrograins, without the presence of amorphous phase. The flexural strength of the two OCFs decreased as the treatment temperature increased, and they lost their bendability due to the formation of a substantial number of crystallites. This study underscores the significant impacts of thermal treatment on the microstructure and mechanical properties of OCFs with amorphous component.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197343","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 adsorptive mesoporous MFI membrane using an ionic complex: Long-term performance in water purification","authors":"Reza Yaghoubi,&nbsp;Mohammad Javad Vaezi,&nbsp;Gholamali Ashurizadeh","doi":"10.1111/ijac.15126","DOIUrl":"https://doi.org/10.1111/ijac.15126","url":null,"abstract":"<p>An ionic nickel complex was utilized to synthesize an adsorptive mesoporous MFI zeolite membrane for the removal of heavy metal ions from water. The synthesis conditions (synthesis temperature = 185°C, synthesis duration = 96 h, and molar ratio of NaOH to silica was set to 1) resulted in the highest nickel content (3.5 wt%) within the zeolite structure. The incorporation of nickel into the zeolite structure requires high energy and sufficient time. The template used simultaneously incorporates nickel into the structure and creates a mesoporous structure. Water permeation tests conducted on the membrane demonstrated that a 20-h heat treatment yielded the highest water flux. The presence of nickel ions in the feed solution reduced the membrane blocking (water flux declined from 40 to 15 L m⁻² h⁻¹ over 1 week) by forming stable nickel complexes with some of the anions in water and hydrophilic surface modification effect, while water flux reduction occurred within 6 h in the absence of nickel ions. Analysis of nickel ion concentrations indicated that the membrane functions effectively as an adsorptive zeolite membrane.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197548","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":"Experimental, analytical, and numerical investigation of the ballistic performance of three-layer composite targets","authors":"S. Jafari,&nbsp;A. Alavi Nia","doi":"10.1111/ijac.15135","DOIUrl":"https://doi.org/10.1111/ijac.15135","url":null,"abstract":"<p>In this research, the ballistic performance of three-layer composite targets has been investigated using experimental, analytical, and numerical methods. In another research, an analytical equation was presented to estimate the value of the ballistic limit velocity of these targets. In this research, by using the experimental results, the amount of energy absorption of targets and their ballistic limit velocity were extracted. Then, the effect of each layer on ballistic resistance as well as the half angle of the conical crack in the ceramic layer was determined using a numerical method. Based on the experimental and numerical results, approximately 56.3% of the initial velocity of the projectile is reduced by the ceramic, and this velocity reduction is 25.9% and 17.8% for aluminum and polyurea, respectively. Based on the optimization results, the ceramic with 64.37% has the greatest effect in increasing the energy absorption, whereas the portion of polyurea and aluminum layers is 13.03% and 22.54%, respectively. In the analytical section, due to the large difference between the results of the Florence's equation and the experimental results, the Florence's equation was modified. Then, this modified equation was developed for the three-layer ceramic–polyurea–aluminum target and a new equation was derived to predict ballistic limit velocity.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197504","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":"Enhanced thermal shock resistance of low-carbon MgO–C refractories with SiC/MgAl2O4 nanocomposite powder","authors":"Xiaochuan Chong,&nbsp;Peiyun Yan,&nbsp;Donghai Ding,&nbsp;Guoqing Xiao,&nbsp;Endong Jin,&nbsp;Changkun Lei,&nbsp;Chunzhuo Feng,&nbsp;Xing Hou","doi":"10.1111/ijac.15139","DOIUrl":"https://doi.org/10.1111/ijac.15139","url":null,"abstract":"<p>To enhance the thermal shock resistance of low-carbon MgO–C refractories, SiC nanowires incorporated SiC/MgAl₂O₄ composite reinforcer were introduced. The effect of SiC/MgAl₂O₄ on the mechanical properties, thermal shock resistance, oxidation resistance and slag resistance of low-carbon MgO–C refractories was explored. The results showed that the low-carbon MgO–C sample incorporated with 9 wt.% SiC/MgAl₂O₄ (M9) displayed optimal overall properties, with 28% higher residual strength ratio, 59% lower oxidation index, and 18% reduced corrosion area compared to the reference sample M0. The increased residual strength ratio is mainly attributed to the synergistic effect of SiC nanowires and rod-shaped MgAl₂O₄, which facilitate crack deflection and branching, and energy dissipation through bridging and pull-out mechanisms, collectively contributing to matrix toughening. Besides, M9 (3 wt.% graphite) demonstrates better mechanical strength, oxidation resistance, and slag resistance compared to high-graphite samples (10 wt.% graphite), highlighting the significant potential of SiC/MgAl₂O₄ composite reinforcer in developing sustainable low-carbon refractories.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197505","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":"Investigating the mechanical properties, durability, microstructure, and embodied CO2 emissions of silica fume-infused sustainable concrete","authors":"Ansam Ali Hashim,&nbsp;Ali I. Al-Mosawi,&nbsp;Shaymaa Abbas Abdulsada","doi":"10.1111/ijac.15136","DOIUrl":"https://doi.org/10.1111/ijac.15136","url":null,"abstract":"<p>Silica fumes are investigated as a strengthening agent for grade 30 concrete in this study. Silica fume was added in weight proportions of 4, 8, and 12 wt.%. The slump test, ultrasonic pulse velocity, total water absorption, compressive strength, and embodied CO₂ emissions of the newly developed concrete mix were determined. The results of this study indicate that silica fumes positively affect concrete's mechanical characteristics, durability, and microstructure, as well as its embodied CO₂ emissions. In addition, silica fume concentrations have been shown to enhance concrete's compressive strength. The major compressive strength increment was 37% with a mixture containing 8 wt.% silica fume. This was compared with a silica fume-free mixture under the same conditions. Additionally, the SEM images of a newly developed concrete mix revealed positive interaction, resulting in a significant reduction in cracks and pores compared to a silica fume-free sample. Moreover, the results showed a significant decrease in absorption and an increase in ultrasonic pulse velocity as a result of an increase in the proportion of silica fumes. Compared to the mixture without silica, there was a maximum improvement of 6% with an addition of 8 wt.% silica. The optimum reduction in embodied carbon emissions was 37% at 12 wt.% silica addition. On the other hand, silica fume addition negatively affects workability, where workability decreases inversely with this additive.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197542","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":"Investigation of nano-SiO2 and nano-Al2O3 additions in glaze formulation for Brazilian polished glazed porcelain stoneware tile","authors":"José Eduardo Tavares Cordioli,&nbsp;Vicente de Lorenzi,&nbsp;Alexandre Zaccaron,&nbsp;Oscar Rubem Klegues Montedo,&nbsp;Sabrina Arcaro,&nbsp;João Batista Rodrigues Neto","doi":"10.1111/ijac.15125","DOIUrl":"https://doi.org/10.1111/ijac.15125","url":null,"abstract":"<p>The ceramic-glaze for polished glazed porcelain stoneware tile is directly linked in determining the quality of the final product, as its characteristics significantly influence surface properties after polishing, including stain resistance, abrasion resistance, and chemical resistance. In this study, the effect of incorporating nanomaterials of alumina and silica into a glaze formulation for polished glazed porcelain stoneware tile was evaluated, with the goal of enhancing stain resistance by reducing surface porosity. Initially, the nanomaterials and the standard glaze formulation (STD) were characterized to assess the individual behavior of each material. Later, ten glaze formulations were developed—in a simplex centroid system—each subjected to postpolishing analysis, with the primary selection criterion being improved stain resistance. Optical microscopy analysis of surface porosity revealed that the addition of nanosilica (nano-SiO₂) reduced glaze surface porosity by up to 67%, thereby significantly improving the stain resistance of the final product. Conversely, the addition of nanoalumina (nano-Al₂O₃) increased surface porosity, negatively affecting stain resistance. The reduction in porosity observed with nano-SiO₂ is attributed to enhanced particle packing and an increase in relative density within the glaze matrix. Finally, formulations with the lowest surface porosity were selected for further testing for comparison to STD. These tests included X-ray diffraction, differential scanning calorimetry, thermogravimetric and differential analysis, dilatometry, and scanning electron microscopy. Thermal expansion and hemispherical temperature tests allowed the theoretical viscosity to be calculated using the Vogel–Fulcher–Tammann equation, revealing that formulations containing nano-SiO₂ exhibited lower temperatures for dilatometric softening, Littleton softening, and flow point. SEM analysis confirmed a reduction in porosity and a decrease in pore diameter in the nano-SiO₂ formulations.</p>","PeriodicalId":13903,"journal":{"name":"International Journal of Applied Ceramic Technology","volume":"22 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ijac.15125","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144197544","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}