Open Ceramics最新文献_第7页

Machine learning for the optimization of porosity-hygroscopy correlations of porous geopolymers in indoor thermal comfort: A hybrid feature selection approach 机器学习优化多孔地聚合物在室内热舒适性中的孔隙率-吸湿相关性：一种混合特征选择方法

IF 2.8 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics

Pub Date : 2025-10-02 DOI: 10.1016/j.oceram.2025.100857

Lauraine Tiogning-Djiogue , Herman Tcheneghon Motcheyo , Elie Kamseu , Sylvie Rossignol , Cristina Leonelli

Geopolymers are recognized as sustainable and environmentally friendly materials with a notable hygroscopic capacity that provides several advantages, particularly concerning thermal comfort. Optimizing the selection of variables with the most significant impact is essential for enhanced performance. However, conducting experimental tests to establish porosity hygroscopy correlations is costly regarding labor, time, and material resources. This study aims to employ a hybrid feature selection technique based on a multi-objective algorithm incorporating RReliefF and NSGA-II to streamline the geopolymer matrices by automatically selecting the most impactful and significant variables for their hygroscopic properties. Upon evaluating this feature selection method with laboratory-collected data, the Root Mean Squared Error (RMSE), Mean Squared Error (MSE), and Mean Absolute Error (MAE) results are significantly superior to those of other existing methods. These results underscore the importance of intrinsic parameters such as porosity, tortuosity, and pore diameter, along with external parameters like temperature and humidity, which directly affect hygroscopy. Consequently, this approach is expected to reduce experimental efforts and expedite the development of new geopolymer materials.

地聚合物是公认的可持续和环保材料，具有显着的吸湿能力，提供了几个优势，特别是在热舒适方面。优化具有最显著影响的变量的选择对于增强性能至关重要。然而，进行实验测试来建立孔隙率和吸湿相关性在人工、时间和材料资源方面都是昂贵的。本研究旨在采用基于RReliefF和NSGA-II多目标算法的混合特征选择技术，通过自动选择对其吸湿性影响最大和最显著的变量来简化地聚合物矩阵。用实验室采集的数据对该特征选择方法进行评价，结果表明，均方根误差（RMSE）、均方误差（MSE）和平均绝对误差（MAE）明显优于其他现有方法。这些结果强调了孔隙度、弯曲度和孔径等内部参数以及温度和湿度等外部参数的重要性，这些参数直接影响吸湿性。因此，这种方法有望减少实验努力，加快开发新的地聚合物材料。

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引用次数: 0

Thermal behavior of geopolymer under a flame troch exceeding 1600 °C: thermal transfer, structural and microstructural evolutions 地聚合物在超过1600°C的火焰火炬下的热行为：热传递、结构和微观结构演变

IF 2.8 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics

Pub Date : 2025-09-30 DOI: 10.1016/j.oceram.2025.100855

Ouamara Lila, Gharzouni Ameni, Rivaud Geoffroy, Boisserie Baptiste, Duport Patrice, Denoirjean Alain, Rossignol Sylvie

Geopolymers are eco-friendly materials with significant potential for applications requiring high resistance to extreme temperatures. This study focuses on the thermal performance and reduction of heat transfer time in geopolymers during torch flame thermal treatment. The innovation lies in developing a formulation and design of geopolymers capable of withstanding temperatures up to 1600 °C. This constitutes a highly original contribution, as very few studies have investigated geopolymer materials at such high temperatures. In addition, the study integrates the valorization of excavated clays as precursors in the synthesis of these geopolymers. Indeed, the geopolymers are formulated using metakaolin, Callovo–Oxfordian argillite, additives and alkaline silicate solutions. Torch flame (oxygen/acetylene) tests are conducted on samples subjected to direct fire exposure at temperatures exceeding 1600 °C, while a thermometer on the non-exposed surface monitors temperature variations. The study reveals that a minimum thickness of 30 mm, combined with barium-based additives, is required to enhance thermal resistance. This behavior is attributed to the mineralogy changes occurring with heating process including the formation of high-temperature crystalline phases, including leucite, cristobalite, and hexacelsian. These findings highlight the strong potential of geopolymers for high-temperature protection.

地聚合物是一种环保材料，在极端温度下具有很高的耐受性。本文主要研究了地聚合物在火炬火焰热处理过程中的热性能和传热时间的缩短。创新在于开发一种能够承受高达1600°C温度的地聚合物的配方和设计。这是一个高度原创的贡献，因为很少有研究在如此高的温度下研究地聚合物材料。此外，该研究还将挖掘出的粘土的增值作为这些地聚合物合成的前体。事实上，地聚合物是由偏高岭土、卡罗沃-牛津泥质岩、添加剂和碱性硅酸盐溶液配制而成的。火炬火焰（氧/乙炔）测试在温度超过1600°C的情况下对直接暴露在火中的样品进行，而非暴露表面上的温度计监测温度变化。研究表明，最小厚度为30 mm，并结合钡基添加剂，以增强耐热性。这种行为归因于在加热过程中发生的矿物学变化，包括高温晶相的形成，包括白晶石、方英石和六角石。这些发现突出了地聚合物在高温防护方面的巨大潜力。

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引用次数: 0

High-resolution tomographic analysis of microstructure and porosity in mock-ups of ancient-inspired mosaics 古代镶嵌画模型中微观结构和孔隙度的高分辨率层析分析

IF 2.8 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics

Pub Date : 2025-09-30 DOI: 10.1016/j.oceram.2025.100859

Neva M.E. Stucchi , Gianluca Iori , Philipp Hans , Andrea Vavasori , Giulia Franceschin , Arianna Traviglia

This research investigates the use of Synchrotron X-ray Computed Tomography (SXCT) to study Roman mosaic mock-ups, focusing on the three-dimensional distribution of material density, cracks, and stress-strain interactions across layers. Three samples were analysed: one of stone tesserae and two of glass tesserae. High-resolution SXCT scans, using polychromatic radiation at X-ray energies above 70 keV, enabled non-invasive, microscale examination of cracks and assessment of how composition influences crack development at interfaces. Digital reconstruction and phase contrast analysis distinguished cracks from pores, revealing microstructural features and enabling quantification of pore volumes and porosity variations within strata. The results showed that stone tesserae induced more extensive cracking in the Supra Nucleus stratum than glass tesserae. These findings enhance understanding of internal microstructure and stress behaviour in mosaics, providing a basis for developing appropriate conservation strategies. Quantifying fracture dimensions enables conservators to determine the optimal viscosity and formulation of consolidants for effective penetration and stabilization, while insights on compaction and tesserae surface quality inform the design of re-adhesion and cleaning protocols that enhance cohesion and minimize future detachment. Together, these results show how microscale analysis can guide material selection and treatment strategies, ultimately supporting more durable repairs and the long-term preservation of mosaics.

本研究利用同步加速器x射线计算机断层扫描（SXCT）研究罗马马赛克模型，重点研究材料密度、裂缝和应力-应变相互作用的三维分布。对三个样品进行了分析：一个是石镶嵌，两个是玻璃镶嵌。高分辨率SXCT扫描，使用70 keV以上的x射线能量的多色辐射，可以对裂缝进行非侵入性的微尺度检查，并评估成分如何影响界面处的裂缝发展。数字重建和相对比分析区分了裂缝和孔隙，揭示了微观结构特征，并实现了地层孔隙体积和孔隙度变化的量化。结果表明，石镶嵌比玻璃镶嵌在上核层中引起更广泛的开裂。这些发现增强了对马赛克内部微观结构和应力行为的理解，为制定适当的保护策略提供了基础。通过对裂缝尺寸的量化，保护人员可以确定最佳的黏度和固结剂配方，从而实现有效的渗透和稳定，同时，对压实和tesserae表面质量的了解，可以为重新粘接和清洁方案的设计提供信息，从而增强粘聚力，最大限度地减少未来的脱落。总之，这些结果显示了微尺度分析如何指导材料选择和处理策略，最终支持更持久的修复和马赛克的长期保存。

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引用次数: 0

Strength limiting defects in additively manufactured ceramics 增材制造陶瓷的强度限制缺陷

IF 2.8 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics

Pub Date : 2025-09-30 DOI: 10.1016/j.oceram.2025.100858

Maximilian Staudacher , Tanja Lube , Eric Schwarzer-Fischer , Johannes Abel , Maria Reichel , Nadine Lorenz , Lisa Gottlieb , Samuel Long , Florian Fehleisen , Uwe Scheithauer

To optimize part design and the fabrication process of additively manufactured ceramics, it is of importance to accurately determine the functional and mechanical properties of a part. Regarding the mechanical properties, the strength of ceramics is governed by failure inducing defects. Therefore, understanding such defects is fundamental to ensure a high quality, reliability, and performance of any ceramic part.

However, for manufacturing methods such as material extrusion, fabrication of a part is realized through a vastly different approach compared to vat-photopolymerization or other methods. Thus, every method introduces unique, process-related defects. While some of these defects occur in multiple manufacturing methods, they are often described and named differently. Thus far, no unified nomenclature and classification is available, which hinders comparison and increases misunderstanding.

Therefore, the goal of this work is to assess and categorise the process-related defects in ceramic additive manufacturing, demonstrated for vat photopolymerization, material extrusion and material jetting.

为了优化增材制造陶瓷的零件设计和制造工艺，准确确定增材制造陶瓷零件的功能性能和力学性能至关重要。在力学性能方面，陶瓷的强度受诱导失效缺陷的影响。因此，了解这些缺陷是确保任何陶瓷部件的高质量，可靠性和性能的基础。然而，对于制造方法，如材料挤压，零件的制造是通过一种与光聚合或其他方法截然不同的方法来实现的。因此，每种方法都会引入独特的、与过程相关的缺陷。虽然这些缺陷中的一些出现在多种制造方法中，但它们通常被不同地描述和命名。到目前为止，还没有统一的命名和分类，这阻碍了比较，增加了误解。因此，这项工作的目标是评估和分类陶瓷增材制造中与工艺相关的缺陷，例如还原光聚合、材料挤压和材料喷射。

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引用次数: 0

Effects of different NaOH concentrations to synthesize CuO NPs for the tuning of properties 不同NaOH浓度对合成CuO NPs性能的影响

IF 2.8 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics

Pub Date : 2025-09-28 DOI: 10.1016/j.oceram.2025.100856

Sumaiya Akter , Md․Saiful Alam , Sumaya Tabassum , Dipa Islam , Md․Najem Uddin , Sanjida Khan , Samina Ahmed , Md. Sahadat Hossain

CuO NPs are a remarkable transitional metal oxide species that are a potential photocatalytic and antimicrobial agent for wastewater treatment, though they exhibit considerable limitations that restrict their practical applications. The current study aims to alter the structural properties of CuO by implementing different reducing agent concentrations and to enhance its functional properties as well. The characteristic evaluation of the prepared specimens was executed by implementing X-ray powder diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and energy dispersive X-ray analysis (EDAX). The data obtained from XRD peaks were utilized to determine intrinsic specifications, including crystallite size, texture coefficient, preference growth, etc., to track the change in microstructural characteristics, which proclaimed a significant shift in these parameters was achieved with different reducing agent concentrations. Morphological probing by SEM delineated the alteration in the average size and shape of the specimens from spherical towards cylindrical shape. The specimens showed comparatively enhanced photocatalytic dye degradation percentage and biocidal activity as synthesized at higher reducing agent concentration under the examined conditions.

CuO NPs是一种重要的过渡金属氧化物，是废水处理中潜在的光催化和抗菌剂，尽管它们具有相当大的局限性，限制了它们的实际应用。本研究旨在通过施加不同的还原剂浓度来改变氧化铜的结构性质，并增强其功能性质。采用x射线粉末衍射（XRD）、热重分析（TGA）、傅里叶变换红外（FTIR）、扫描电子显微镜（SEM）和能量色散x射线分析（EDAX）对制备的样品进行了特征评价。利用x射线衍射峰的数据，确定了晶体尺寸、织构系数、偏好生长等内在指标，跟踪了微观结构特征的变化，发现不同还原剂浓度下，这些参数发生了显著变化。扫描电镜形态学探测表明，样品的平均尺寸和形状由球形向圆柱形转变。在所考察的条件下，在较高的还原剂浓度下合成的样品具有较强的光催化染料降解率和生物杀灭活性。

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引用次数: 0

Simultaneous effects of firing temperatures and porogenic agent type on properties of low-cost ceramic membranes: Application in the treatment of pretreated and non-pretreated wastewater by brewery WWTP 烧制温度和致气孔剂类型对低成本陶瓷膜性能的同时影响：在啤酒污水处理厂预处理和未预处理废水处理中的应用

IF 2.8 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics

Pub Date : 2025-09-25 DOI: 10.1016/j.oceram.2025.100854

Kouotou Mfomboum Yacouba , NJindam Oumar Ramadan , Pountouenchi Amdou , Mountapbeme Ibrahim Cherif , Njoya André , Gisèle Laure Lecomte–Nana , Njoya Dayirou

This work focuses on the study of membrane properties with increasing temperature and their efficiency in wastewater treatment pretreated and non- pretreated by the Brewery Wastewater Treatment Plant (WWTP) in Yaounde. The raw materials and ceramic membranes were characterized. The M3, M8 and M13 formulations were sintered at 1050, 1100 and 1150 °C. The M8 membrane containing MSS pore-forming agents obtained at 1100 °C was more satisfactory in terms of its high porosity of 53.64 %, its hydraulic permeability of 298.59 L.h^-1m^-2bar^-1 and its pore diameter of 0.096 µm. It has produced impressive results with 97.88 % and 98 % of COD; 96.96 % and 97.60 % of BOD₅; 89.71 % and 88.16 % of suspended solids; 90.21 % and 90.65 % of turbidity values respectively for the non-pretreated and pretreated samples. This research has developed new ceramic membranes, offering potential solutions to the challenges of organic waste management and industrial wastewater treatment.

本文主要研究了雅温得啤酒废水处理厂（WWTP）预处理和非预处理后膜的温度变化及其处理效率。对原料和陶瓷膜进行了表征。M3、M8和M13配方分别在1050、1100和1150℃下烧结。1100℃条件下制备的含MSS成孔剂的M8膜孔隙率为53.64%，水力渗透率为298.59 l - h-1m-2bar-1，孔径为0.096µm。COD去除率分别为97.88%和98%，效果显著；BOD5分别为96.96%和97.60%；悬浮物含量分别为89.71%和88.16%；未预处理和预处理样品的浊度值分别为90.21%和90.65%。该研究开发了新型陶瓷膜，为有机废物管理和工业废水处理的挑战提供了潜在的解决方案。

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引用次数: 0

Incorporation of Zn/Sr-Ga based LDH particles into Si-HAp coatings to control the corrosion of Nitinol alloys 在Si-HAp涂层中加入Zn/Sr-Ga基LDH颗粒控制镍钛诺合金的腐蚀

IF 2.8 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics

Pub Date : 2025-09-24 DOI: 10.1016/j.oceram.2025.100852

Reza Samiee , Alicia Duran , Yolanda Castro , Dusan Galusek , A.R. Boccaccini , Amirhossein Pakseresht

Metallic implants, especially Nitinol, have numerous biomedical applications; however, they have inherent drawbacks, such as poor corrosion and wear resistance and suffer from nickel ion leaching. To address these challenges, this paper explores the use of silicon-substituted hydroxyapatite (Si-HAp) coatings with incorporated Zn/Sr-Ga based Layered Double Hydroxide (LDH) particles deposited by electrophoretic deposition (EPD). The synthesized Zn/Sr-Ga based LDH particles were investigated as both passive and active fillers in Si-HAp coatings. An anodization pre-treatment of the Nitinol substrates was performed to improve adhesion between the substrate and the coating. The EPD parameters were also optimized to prepare homogeneous and stable Si-HAp coatings loaded with Zn/Sr-Ga LDH particles. The morphology, composition, and electrochemical properties of the Si-HAp composite coatings were characterized using different techniques. Electrochemical impedance spectroscopy (EIS) and polarization studies demonstrated a significant improvement of the corrosion resistance properties of Si-HAp coatings with Zn/Sr-Ga LDH particles, compared to pure Si-HAp coatings and Nitinol substrate. The LDH@Si-HAp-coated sample showed the lowest nickel release, indicating the potential of LDH to reduce toxicity and enhance the strength of Nitinol implants.

金属植入物，特别是镍钛诺，有许多生物医学应用；然而，它们有固有的缺点，如耐腐蚀性和耐磨性差，并遭受镍离子浸出。为了解决这些挑战，本文探索了硅取代羟基磷灰石（Si-HAp）涂层的使用，该涂层采用电泳沉积（EPD）沉积Zn/Sr-Ga基层状双氢氧化物（LDH）颗粒。研究了合成的Zn/Sr-Ga基LDH颗粒作为Si-HAp涂层的被动填料和主动填料。对镍钛诺基板进行了阳极氧化预处理，以改善基板与涂层之间的附着力。优化了EPD参数，制备了均匀稳定的负载Zn/Sr-Ga LDH颗粒的Si-HAp涂层。采用不同的技术对Si-HAp复合涂层的形貌、组成和电化学性能进行了表征。电化学阻抗谱（EIS）和极化研究表明，与纯Si-HAp涂层和镍钛诺基体相比，添加Zn/Sr-Ga LDH颗粒的Si-HAp涂层的耐腐蚀性能有显著提高。LDH@Si-HAp-coated样品的镍释放量最低，表明LDH具有降低镍钛诺植入物毒性和增强其强度的潜力。

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引用次数: 0

Bio-inspired synthesis and characterization of sodium-doped ZnO nanoparticles and their cytotoxicity assay 钠掺杂ZnO纳米颗粒的仿生合成、表征及其细胞毒性测定

IF 2.8 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics

Pub Date : 2025-09-24 DOI: 10.1016/j.oceram.2025.100853

Ali Hussein Lafta , Geroen Corneliccen , Mehran Golestanian , Mansour Kha

The novel and particular features of nanoparticles have attracted scientists towards medical, optic, computer, and pharmacy applications. Nanoparticles (1–100 nm) made from various elements. The doping elements together can enhance or reduce their particular features. Biosynthesis of ZnO and Na-doped ZnO nanoparticles was done using Zingiber officinale. The resulting ZnO and Na-doped ZnO NPs were characterized by FESEM-EDAX and XRD. The size of ZnO spherical NPs is randomly in the range of 40 to 80 nm. Na-doped ZnO NPs have spherical shapes. The size of spherical NPs and the accumulation areas of Na-doped ZnO are randomly in the range of 40 to 199 nm. This increase in size and state of agglomerate is due to the large rNa compared to rZn. The photoluminescence spectrum showed that doped ZnO NPs have a significant emission band at wavelengths of 327 nm and 332 nm. The doping causes a shift from 324 nm to 327 nm. The MTT test was used to investigate the cytotoxicity of ZnO and Na-doped ZnO NPs. The ZnO and Na-doped ZnO NPs showed cytotoxicity effect on MCF7 cell lines as determined by the IC₅₀ values 60 and 67 µg/mL, respectively, on MCF7.

纳米粒子的新奇和独特的特性吸引了科学家们在医学、光学、计算机和制药方面的应用。由各种元素制成的纳米颗粒（1-100纳米）。掺杂元素在一起可以增强或降低它们的特定特征。以生姜为原料合成了氧化锌和掺钠氧化锌纳米粒子。用FESEM-EDAX和XRD对ZnO和na掺杂的ZnO NPs进行了表征。ZnO球形纳米粒子的尺寸随机分布在40 ~ 80 nm之间。na掺杂ZnO NPs具有球形。球形NPs的尺寸和na掺杂ZnO的堆积面积随机分布在40 ~ 199 nm范围内。这种大小和凝聚状态的增加是由于rNa比rZn大。光致发光光谱显示，掺杂ZnO NPs在327 nm和332 nm波长处有明显的发射带。掺杂引起了从324 nm到327 nm的位移。采用MTT法研究了ZnO和na掺杂ZnO纳米粒子的细胞毒性。ZnO和na掺杂ZnO NPs对MCF7的IC50分别为60µg/mL和67µg/mL，显示出对MCF7的细胞毒性作用。

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引用次数: 0

CaO/SiC(O) nanocomposites for CO2 capture at higher temperatures: Synthesis, characterization, and initial performance studies 用于高温CO2捕获的CaO/SiC(O)纳米复合材料：合成、表征和初始性能研究

IF 2.8 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics

Pub Date : 2025-09-18 DOI: 10.1016/j.oceram.2025.100851

Sarabjeet Kaur , Kurosch Rezwan , Michaela Wilhelm

This study presents the synthesis and characterization of CaO/SiC(O) nanocomposites via chemical modification of allylhydridopolycarbosilane (SMP) using two calcium precursors: calcium acetylacetonate (CaAcac) and calcium hydroxide (CaOH). ATR-FTIR analysis showed that CaAcac chemically interacts with SMP, promoting hydrosilylation and extensive cross-linking, while CaOH showed no interaction. Thermogravimetric analysis revealed higher than expected ceramic yields for CaAcac-modified SMP samples, whereas CaOH-modified SMP samples matched theoretical values. XRD and TEM results showed that CaAcac leads to mostly amorphous ceramics, while CaOH facilitated CaO crystallization at 600 °C. The nanocomposites captured 2–5 wt% CO₂ at 500 °C, which is comparable to the uptake of pure CaO derived from CaCO₃ due to their low CaO content (11–15 %). However, only the amorphous CaAcac modified nanocomposite can release the absorbed CO₂ at 500 °C in larger amounts of 66 wt%. CaAcac-modified SMP nanocomposites thus show a higher potential for CO₂ capture and release applications at moderate temperatures of 500 °C compared to CaOH-modified nanocomposites.

采用乙酰丙酮钙（CaAcac）和氢氧化钙（CaOH）两种钙前驱体对烯丙基多聚碳硅烷（SMP）进行化学改性，制备了CaO/SiC(O)纳米复合材料。ATR-FTIR分析表明，CaAcac与SMP发生化学相互作用，促进硅氢化和广泛交联，而CaOH则没有相互作用。热重分析表明，caacac修饰的SMP样品的陶瓷产率高于预期，而caoh修饰的SMP样品符合理论值。XRD和TEM结果表明，在600℃下，CaAcac主要生成非晶陶瓷，而CaOH则促进了CaO的结晶。纳米复合材料在500°C下捕获2-5 wt%的CO2，由于其低CaO含量（11 - 15%），这与CaCO3衍生的纯CaO的吸收率相当。然而，只有无定形的CaAcac修饰的纳米复合材料才能在500℃下释放吸收的CO2，释放量为66 wt%。因此，与caoh修饰的纳米复合材料相比，caacac修饰的SMP纳米复合材料在500°C的中等温度下具有更高的二氧化碳捕获和释放应用潜力。

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引用次数: 0

Rheological characterization of clay–refractory waste composites for direct ink writing of ceramic structures 陶瓷结构直接油墨书写用粘土-耐火废料复合材料的流变学表征

IF 2.8 Q1 MATERIALS SCIENCE, CERAMICS

Open Ceramics

Pub Date : 2025-09-14 DOI: 10.1016/j.oceram.2025.100850

Jiří Rozbroj , David Žurovec , Jakub Hlosta , Michaela Topinková , Hana Ovčačíková , Jan Diviš , Kamila Pokorná , Jan Nečas , Jiří Zegzulka

In the context of the circular economy and raw material sustainability, it is essential to explore alternative raw materials for the development of formulations with optimized physical and mechanical properties. This study focused on the rheological characterization of refractory ceramic waste blended with clay, aiming to optimize compositions for 3D printing. A mixture exhibiting the highest strength and resistance to shear stress was identified, making it a promising candidate for use in complex structural components. Mixtures with lower strength proved suitable for less demanding applications with simpler geometries. The presence of finer particles and lower bulk density of the filler led to increased viscosity and critical shear stress, contributing to higher mechanical stability. In contrast, mixtures with higher bulk density exhibited lower viscosity and reduced resistance to mechanical loading, despite demonstrating higher elasticity within the linear viscoelastic region. These findings represent a significant contribution to the effective selection and design of refractory ceramic formulations for additive manufacturing, tailored to the specific functional requirements of targeted applications. The research also demonstrated the feasibility of using waste-derived materials as feedstock for Direct Ink Writing (DIW) 3D printing of refractory ceramics, supporting both material circularity and sustainable manufacturing practices.

在循环经济和原材料可持续性的背景下，探索具有优化物理和机械性能的配方的替代原材料至关重要。本研究的重点是耐火陶瓷废料与粘土混合的流变特性，旨在优化3D打印的成分。确定了一种具有最高强度和抗剪切应力的混合物，使其成为复杂结构部件中有希望使用的候选者。较低强度的混合物被证明适用于要求较低、几何形状较简单的应用。更细的颗粒和更低的堆积密度导致填料粘度和临界剪切应力的增加，有助于提高机械稳定性。相比之下，体积密度较高的混合物表现出较低的粘度和较低的机械载荷阻力，尽管在线性粘弹性区域内表现出较高的弹性。这些发现对增材制造耐火陶瓷配方的有效选择和设计做出了重大贡献，可以根据目标应用的特定功能要求进行定制。该研究还证明了使用废物衍生材料作为耐火陶瓷直接墨水书写（DIW） 3D打印原料的可行性，支持材料循环和可持续制造实践。

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引用次数: 0