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Parametric study of the correlation between location and size of superficial cracks in the deflection of traditional tiles based on finite element analysis 基于有限元分析的传统瓦挠曲中表面裂纹位置与尺寸相关性参数化研究
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-07-01 DOI: 10.1016/j.bsecv.2022.12.003
Beatriz Defez, María Moncho-Santonja, Silvia Aparisi-Navarro, Guillermo Peris-Fajarnés

Superficial cracks are one of the common defects in the manufacturing of traditional ceramic tiles. Such defects do not only damage the appearance of the product, but also affect their mechanical behavior. Understanding the correlation between superficial cracks and deflection is key for the traditional ceramic tile industry. However, the related bibliography is very rare, and its importance is systematically ignored during design and manufacturing. In this work, we investigate the impact of the location and size of superficial cracks over the deflection of traditional ceramic tiles. A technique based on FEA (finite element analysis) is validated through experimental data and used to undertake a statistical, parametric research. The study shows that location and depth of the defect have an exponential cross-correlation over deflection and could be characterized together through a single surface. On the contrary, the width and sharpening of the defect barely interfere.

表面裂纹是传统瓷砖生产中常见的缺陷之一。这样的缺陷不仅会损坏产品的外观,还会影响其机械性能。了解表面裂纹与挠度之间的关系是传统瓷砖行业的关键。然而,相关文献很少,其重要性在设计和制造过程中被系统地忽视。在这项工作中,我们研究了表面裂缝的位置和大小对传统瓷砖挠度的影响。通过实验数据验证了基于FEA(有限元分析)的技术,并用于进行统计、参数研究。研究表明,缺陷的位置和深度与挠度呈指数相互关系,可以通过单个表面来表征。相反,缺陷的宽度和锐化程度几乎不受干扰。
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引用次数: 0
Down conversion and efficient NIR to visible up-conversion emission analysis in Ho3+/Yb3+ co-doped tellurite glasses Ho3+/Yb3+共掺碲酸盐玻璃的下转换和高效近红外到可见上转换发射分析
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-07-01 DOI: 10.1016/j.bsecv.2023.01.002
Sharafudeen Kaniyarakkal , Kesavulu Culala Rajasekharaudayar , Rajesh Dagupati , Yang Li , Zhi Chen , Vijayakumar Sadasivan Nair , Shiju Edappadikkunnummal

A series of glasses with chemical composition (50−xy) TeO2–30ZnO–10YF3–10NaF–xHo2O3yYb2O3 (x = 0.5 and y = 0.5, 1.0, 3.0, 5.0 mol%) were prepared by melt-quenching procedure. The absorption spectra, excitation, down conversion emission spectra, up-conversion (UC) emission spectra and decay time measurements were analyzed. In down conversion, the visible emission transition intensity associated with 5F4  5I8 (547 nm), 5F5  5I8 (657 nm), and 5F4  5I7 (755 nm) of Ho3+ ions decreased with Yb3+ concentration due to the energy transfer (ET) process from Ho3+ to Yb3+ ions. In up-conversion, on exciting with 980 nm diode laser beam, we observed a strong green (543 nm) and red (657 nm) UC emissions, that refers to the energy level transitions; 5F4 (5S2)  5I8 and 5F5  5I8 of Ho3+. The influence of excitation power on UC intensities studies revealed that the population at 5F4 (5S2) and 5F5 levels of Ho3+ ion occurs due to two-photon absorption process associated energy transfer from Yb3+ to Ho3+. The influence of Yb3+ doped concentration on UC was studied, and it is observed that both the green and red UC intensities improved significantly on increasing Yb3+ ions concentration.

采用熔体淬火法制备了化学成分为(50−x−y) TeO2-30ZnO-10YF3-10NaF-xHo2O3-yYb2O3 (x = 0.5, y = 0.5, 1.0, 3.0, 5.0 mol%)的玻璃。分析了吸收光谱、激发光谱、下转换发射光谱、上转换发射光谱和衰减时间的测量结果。下转换过程中,Ho3+离子的5F4→5I8 (547 nm)、5F5→5I8 (657nm)和5F4→5I7 (755 nm)的可见发射跃迁强度随Yb3+浓度的增加而减小,这是由于Ho3+离子向Yb3+离子的能量转移(ET)过程所致。在上转换中,在980 nm二极管激光束激发下,我们观察到强烈的绿色(543 nm)和红色(6557 nm) UC发射,这是指能级跃迁;Ho3+的5F4 (5S2)→5I8和5F5→5I8激发功率对UC强度的影响研究表明,在5F4 (5S2)和5F5能级上Ho3+离子的居群是由于双光子吸收过程中与能量从Yb3+转移到Ho3+有关。研究了Yb3+掺杂浓度对UC的影响,发现随着Yb3+掺杂浓度的增加,绿色和红色UC的强度都有显著提高。
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引用次数: 2
Calcium phosphate cements improved by addition of carbonated Hydroxyapatite type B 添加碳酸化羟基磷灰石B型改良磷酸钙水泥
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-07-01 DOI: 10.1016/j.bsecv.2022.05.002
Jeisson Ruiz , Daniel Moreno , Hamilton Copete , Fabio Vargas , María Esperanza López

The need for biodegradable bone graft biomaterials in orthopedic surgeries is more often each day due to the promotion of natural tissue regeneration. One option is calcium phosphate cements (CPC), that are also osseconductors. However, their low mechanical properties restrict their application to low mechanical requirement areas of the body. The CPC mechanical resistance depends on the entanglement grade of the calcium deficient hydroxyapatite (CDHA), one option to improve it is trough incorporation of nucleating agents (e.g., stoichiometrically hydroxyapatite). This work proposes the use of a biodegradable nucleating agent, as it is Type B carbonated Hydroxyapatite (CHA-B), to improve the CPC performance. It was formulated compositions of alpha tricalcium phosphate (α-TCP) with variations on the amount of CHA-B (0–5–10–15 wt.%). The compression resistance was evaluated and results indicated that 5% CHA-B increases the strength (7.8%) and the elastic modulus (6.16%), while the other additions diminished such values. Besides, the effect on the setting time, the in vitro degradation and in the physicochemical properties was determined through scanning electron microscopy, X-ray diffraction and infrared spectroscopy.

由于促进了自然组织再生,骨科手术中对可生物降解的骨移植物生物材料的需求每天都在增加。一种选择是磷酸钙水泥(CPC),它也是骨二聚体。然而,它们的低机械性能限制了它们在身体的低机械要求区域的应用。CPC的机械阻力取决于缺钙羟基磷灰石(CDHA)的缠结等级,改善它的一种选择是通过掺入成核剂(例如,化学计量羟基磷灰石)。这项工作提出使用一种可生物降解的成核剂,如B型碳酸羟基磷灰石(CHA-B),以提高CPC的性能。它由α-磷酸三钙(α-TCP)组成,随CHA-B含量的变化而变化(0–5–10–15 wt.%)。对抗压性能进行了评估,结果表明,5%的CHA-B可提高强度(7.8%)和弹性模量(6.16%),而其他添加剂可降低这些值。此外,通过扫描电子显微镜、X射线衍射和红外光谱测定了其对凝固时间、体外降解和理化性质的影响。
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引用次数: 2
Sol–gel/hydrothermal synthesis of well-aligned ZnO nanorods 溶胶-凝胶/水热合成排列良好的ZnO纳米棒
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-07-01 DOI: 10.1016/j.bsecv.2022.05.004
Fabiola del Carmen Gómez Torres , José Luis Cervantes López , Angélica Silvestre López Rodríguez , Pio Sifuentes Gallardo , Erik Ramírez Morales , Germán Pérez Hernández , Juan Carlos Díaz Guillen , Laura Lorena Díaz Flores

The nucleation and growth of ZnO nanorods by hydrothermal method onto seed layer deposited onto an ITO/PET substrate. Concentrations of 10 and 15 mM were used for the synthesis of the seed layer solution, as well as 10 and 15 mM for the hydrothermal treatment, it is noted that the entire process was carried out at low temperature (<100 °C). The synthesis of ZnO nanorods was carried out in two stages: (i) A nucleation process, using the sol–gel method to obtain a seed layer; and (ii) a growth process, using the hydrothermal process to promote the perpendicular growth of ZnO nanostructures. The X-ray diffraction (XRD) ZnO results revealed a preferential orientation along the (002) axis, with a wurtzite hexagonal structure. The crystallite size (27 nm) and Gibbs free energy of the films were calculated, which exhibited a minimum diameter for the nucleation of ZnO nanorods (22 and 30 nm of the core diameter). The thickness layer is between 200 and 500 nm. These results indicate that ZnO nanorods with an average diameter between 50 and 195 nm are obtained, oriented perpendicularly to the ITO/PET substrate, synthesized by a low temperature process. Their potential applications are in power generators and sensors.

通过水热法在ITO/PET衬底上沉积的种子层上成核和生长ZnO纳米棒。10和15mM的浓度用于种子层溶液的合成,以及10和15mm的浓度用于水热处理,注意到整个过程是在低温(<;100°C)下进行的。ZnO纳米棒的合成分两个阶段进行:(i)成核过程,使用溶胶-凝胶法获得种子层;和(ii)生长工艺,使用水热工艺促进ZnO纳米结构的垂直生长。X射线衍射(XRD)ZnO结果显示沿(002)轴的择优取向,具有纤锌矿六方结构。计算了薄膜的晶粒尺寸(27nm)和吉布斯自由能,其表现出ZnO纳米棒成核的最小直径(核直径的22和30nm)。该厚度层在200和500纳米之间。这些结果表明,通过低温工艺合成了垂直于ITO/PET衬底取向的平均直径在50至195nm之间的ZnO纳米棒。它们的潜在应用是在发电机和传感器中。
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引用次数: 6
Actualización de los indicadores bibliométricos del Boletín 更新公报的书目指标
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-07-01 DOI: 10.1016/j.bsecv.2023.07.002
Amador C. Caballero (Editor Jefe)
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引用次数: 0
Characterization of a barium–calcium–aluminosilicate glass/fiber glass composite seal for intermediate temperature solid oxide fuel cells 中温固体氧化物燃料电池用钡钙铝硅酸盐玻璃/玻璃纤维复合密封件的表征
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-07-01 DOI: 10.1016/j.bsecv.2022.05.001
Peyman Safarzadeh Kermani , Mojtaba Ghatee , John Thomas Sirr Irvine

The properties of BaO–CaO–Al2O3–SiO2 (BCAS) glass seal materials reinforced with 5–30 wt.% glass fiber are investigated. The seals are prepared by solid mixing process. The microstructure and phase content of the samples are studied. Mechanical properties are investigated by Vickers micro-hardness, nano-indentation and compression tests. The thermal properties of the samples are evaluated by conducting a dilatometry analysis. The electrical conductivity and leak resistance of the seal materials are measured at high temperatures. Increasing the amount of glass fiber in the composite samples decreases the magnitude of the thermal expansion coefficient. It is found the addition of just 5 wt.% of glass fiber (GF5sample) increases the indentation fracture toughness of the seals by ∼280% without impairing other properties. It is also found that the GF5 sample has high electrical resistivity with the activation energy of 63.7 kJ/mol and very low leak rate of 1.7 × 10−4 sccm/cm at 750 °C.

研究了5-30 wt.%玻璃纤维增强宝草al2o3 - sio2 (BCAS)玻璃密封材料的性能。密封件采用固体混合工艺制备。研究了试样的显微组织和相含量。通过维氏显微硬度、纳米压痕和压缩试验研究了材料的力学性能。通过进行膨胀分析来评价样品的热性能。在高温下测量密封材料的电导率和防泄漏性能。复合材料中玻璃纤维含量的增加使热膨胀系数的大小减小。研究发现,仅添加5wt .%的玻璃纤维(gf5样品),可使密封件的压痕断裂韧性提高约280%,而不会损害其他性能。在750℃下,GF5样品具有较高的电阻率,活化能为63.7 kJ/mol,漏率为1.7 × 10−4 sccm/cm。
{"title":"Characterization of a barium–calcium–aluminosilicate glass/fiber glass composite seal for intermediate temperature solid oxide fuel cells","authors":"Peyman Safarzadeh Kermani ,&nbsp;Mojtaba Ghatee ,&nbsp;John Thomas Sirr Irvine","doi":"10.1016/j.bsecv.2022.05.001","DOIUrl":"https://doi.org/10.1016/j.bsecv.2022.05.001","url":null,"abstract":"<div><p>The properties of BaO–CaO–Al<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub> (BCAS) glass seal materials reinforced with 5–30<!--> <!-->wt.% glass fiber are investigated. The seals are prepared by solid mixing process. The microstructure and phase content of the samples are studied. Mechanical properties are investigated by Vickers micro-hardness, nano-indentation and compression tests. The thermal properties of the samples are evaluated by conducting a dilatometry analysis. The electrical conductivity and leak resistance of the seal materials are measured at high temperatures. Increasing the amount of glass fiber in the composite samples decreases the magnitude of the thermal expansion coefficient. It is found the addition of just 5<!--> <!-->wt.% of glass fiber (GF5sample) increases the indentation fracture toughness of the seals by ∼280% without impairing other properties. It is also found that the GF5 sample has high electrical resistivity with the activation energy of 63.7<!--> <!-->kJ/mol and very low leak rate of 1.7<!--> <!-->×<!--> <!-->10<sup>−4</sup> <!-->sccm/cm at 750<!--> <!-->°C.</p></div>","PeriodicalId":56330,"journal":{"name":"Boletin de la Sociedad Espanola de Ceramica y Vidrio","volume":"62 4","pages":"Pages 304-314"},"PeriodicalIF":3.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49896041","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}
引用次数: 1
Synthesis of aluminum-mesoporous MCM-41 humidity control material from thin-film transistor liquid crystal display waste glass and sandblasting waste and its application 用薄膜晶体管液晶显示器废玻璃和喷砂废料合成介孔铝MCM-41调湿材料及其应用
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-07-01 DOI: 10.1016/j.bsecv.2022.06.003
Ya-Wen Lin , Wei-Hao Lee , Chiao-Ying Chen , Yan-Jun Liu , Wei-Qing Zhang , Mei-Yu Lin , Kae-Long Lin

The preparation of an aluminum-mesoporous A1-MCM-41 humidity control material (Al-MHCM) by hydrothermally synthesizing a mixture of thin-film transistor liquid crystal display (TFT-LCD) waste glass and sandblasting (SB) waste was studied. The product has a typical mesoporous structure, with a specific surface area of up to 1013 m2/g, the pore size distribution calculated is 3–4 nm, and the pore volume of 0.97 cm3/g. All the aluminum atoms of the product are in the form of tetrahedral aluminum in the framework, which confirms the successful synthesis of Al-MHCM. Results show that when the hydrothermal synthesis temperature is 105 °C, the product synthesized from a mixture with a Si/Al molar ratio of 41.8 exhibits excellent performance (91.45 m3/m3) in terms of the equilibrium moisture content and moisture adsorption capacity. The results confirm that the equilibrium moisture content of Al-MHCM is better than the rape straw concrete and hemp concrete (9.8–17.8 m3/m3), and that of a diatomite/ground calcium carbonate composite aterial (11.7 m3/m3). The research results are expected to provide a new technology for synthesizing TFT-LCD waste glass and SB waste into novel high value-added humidity control materials.

采用水热合成薄膜晶体管液晶显示器(TFT-LCD)废玻璃和喷砂(SB)废玻璃的混合物,制备了铝介孔Al-MCM-41湿度控制材料(Al-MHCM)。该产品具有典型的中孔结构,比表面积高达1013 m2/g,计算的孔径分布为3–4 nm,孔体积为0.97 cm3/g。该产品的所有铝原子在骨架中都是四面体铝的形式,这证实了Al-MHCM的成功合成。结果表明,当水热合成温度为105°C时,由Si/Al摩尔比为41.8的混合物合成的产物在平衡含水量和吸湿能力方面表现出优异的性能(91.45m3/m3)。研究结果证实,Al-MHCM的平衡含水量优于油菜秸秆混凝土和大麻混凝土(9.8–17.8 m3/m3),以及硅藻土/研磨碳酸钙复合材料(11.7 m3/m3。
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引用次数: 1
Gamma-ray shielding features of lithium borate glass doped with Ag, Cd and Zn using Phy-X program 用Phy-X程序研究Ag、Cd、Zn掺杂硼酸锂玻璃的伽马射线屏蔽特性
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-07-01 DOI: 10.1016/j.bsecv.2022.06.002
Mario César Pérez Chávez , Janet Alejandra Elías Ángel , Christian Gómez-Solís , Ramón Castañeda-Priego , Héctor René Vega Carrillo , Modesto Antonio Sosa Aquino , Miguel Ángel Vallejo Hernández

Lithium borate glasses doped with three transition metals: Ag, Cd and Zn were prepared with the melt-quenching method. Dopants concentrations were (Li2B4O7)(100−x) (Zn[NO3]2, CdN2O6, AgNO3) (x = 0%, 1%, 5%). Doped glasses were analyzed and their shielding features were determined. The XRD measurements show the amorphous state of the glasses. Fluorescence analysis shows the characteristic emission of Ag, Cd and Zn and their enhancement is explained. UV–vis spectra were recorded in the interval 200–900 nm, and show the peaks belonging to the plasmon of the three transition metals. The optical energy band gaps were calculated using the Tauc's plot model; also, the refractive index was calculated. Additionally, density (ρ) and molar volume (Vm) were calculated as part of the characterization of the samples. In order to determine the shielding features against gamma-rays the mass attenuation coefficient (μ/ρ)(E), the half value layer (HVL(E)) and the Effective Atomic Number (Zeff(E)) for photons from 0.015 to 15 MeV using the Phy-X program.

采用熔融淬火法制备了掺有Ag、Cd和Zn三种过渡金属的硼酸锂玻璃。掺杂剂浓度为(Li2B4O7)(100−x)(Zn[NO3]2,CdN2O6,AgNO3)(x=0%,1%,5%)。对掺杂玻璃进行了分析,确定了掺杂玻璃的屏蔽特性。XRD测量显示了玻璃的非晶态。荧光分析显示了Ag、Cd和Zn的特征发射及其增强作用。在200–900 nm的间隔内记录了紫外-可见光谱,并显示了属于三种过渡金属的等离子体激元的峰。使用Tauc的图模型计算光能带隙;并计算了折射率。此外,作为样品表征的一部分,还计算了密度(ρ)和摩尔体积(Vm)。为了确定伽马射线的屏蔽特性,使用Phy-X程序确定0.015至15MeV光子的质量衰减系数(μ/ρ)(E)、半值层(HVL(E))和有效原子序数(Zeff(E)。
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引用次数: 0
Applicability of near-field electrospinning for the development of TCP-based thin fibres and scaffold 3D printing 近场静电纺丝在开发TCP基薄纤维和支架3D打印中的适用性
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-07-01 DOI: 10.1016/j.bsecv.2022.05.003
M. García-Galán, F.J. Martínez-Vázquez , N. Rebollo-Muñoz, J.M. Montanero, P. Miranda

A novel method for obtaining ceramic (tricalcium phosphate, TCP) fibres with a small diameter (below 0.1 mm) is proposed and its potential use in the 3D printing of scaffolds for biomedical applications is explored. An ink consisting of a high solid content (40 vol%) ceramic slurry in a photocurable resin was prepared and extruded using near-field electrospinning. The influence of the electric potential, flow rate, and distance between tip and collector on the fabrication process in static mode were studied and the role played by unidirectional motion of the collector was also analyzed. A one order of magnitude reduction in the diameter of the jet to around 30 μm is demonstrated under static conditions, which increased to around 100 μm when collector was displaced. Continuous fibres were deposited but the slurry spread over the collector. The method was implemented on a DIW system, using in-flight UV light curing to prevent the spreading of the ink upon deposition. The feasibility of the strategy was demonstrated, although challenges remain for the optimization and control of the fabrication process. Nevertheless, these preliminary results suggest this could be a promising alternative to produce 3D ceramic scaffolds for biomedical applications with improved spatial resolution.

提出了一种获得小直径(小于0.1mm)陶瓷(磷酸三钙,TCP)纤维的新方法,并探索了其在生物医学支架3D打印中的潜在用途。制备由光固化树脂中的高固体含量(40vol%)陶瓷浆料组成的油墨,并使用近场静电纺丝挤出。研究了电势、流速和尖端与集电极之间的距离对静态模式下制造过程的影响,并分析了集电极单向运动所起的作用。在静态条件下,射流直径减少了一个数量级,降至约30μm,当收集器移位时,直径增加到约100μm。沉积了连续的纤维,但浆料在收集器上扩散。该方法在DIW系统上实施,使用飞行中的紫外线固化来防止沉积时油墨的扩散。尽管制造过程的优化和控制仍面临挑战,但该策略的可行性已得到证明。尽管如此,这些初步结果表明,这可能是一种很有前途的替代品,可以生产用于生物医学应用的3D陶瓷支架,并提高空间分辨率。
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引用次数: 0
Controlling the hardness and wear resistance of opaque white glaze by addition of halloysite clay in the composition 在不透明白釉配方中添加硅灰石粘土控制其硬度和耐磨性
IF 3.4 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-05-01 DOI: 10.1016/j.bsecv.2022.01.002
Neslihan Tamsu Selli, Neslihan Basaran

The effect of adding 0.1, 0.3, 0.6, 1.0, and 2.0 wt.% halloysite clay, which calcined and uncalcined form, was studied on the glossy opaque glaze hardness and mechanical properties. Since the most significant disadvantage of opaque glazes is low hardness, halloysite particles with higher toughness were added to glazes to increase this property. Since more stable halloysite tubes were obtained after the calcination process, both calcined and uncalcined halloysite additions were made to see the effect of calcination, and the obtained results were examined. Detailed technological, mechanical and microstructural characterization studies were done on glazed samples. In addition, the change in the melting behavior of the glaze and the glassy phase viscosity of the addition of halloysite was also examined and interpreted considering hot stage microscope analyses. Compared to standard glossy opaque glaze, almost all the halloysite added samples displayed similar optical properties but higher hardness, surface wear resistance, and fracture toughness values. Among the case studies, the 2% halloysite addition by weight (uncalcined and calcined form) showed the highest mechanical properties.

研究了添加0.1、0.3、0.6、1.0和2.0 wt.%煅烧和未煅烧高岭土对釉面不透明釉硬度和力学性能的影响。由于不透明釉的最大缺点是硬度低,因此在釉中加入具有较高韧性的高岭土颗粒来提高这种性能。由于煅烧过程后得到了更稳定的高岭土管,因此对煅烧和未煅烧的高岭土进行了添加,以观察煅烧效果,并对所得结果进行了检验。对釉面样品进行了详细的工艺、力学和微观结构表征研究。此外,还利用热段显微镜分析分析了高岭土的加入对釉料熔化行为和玻璃相粘度的影响。与标准有光泽的不透明釉相比,几乎所有添加的高岭土样品都具有相似的光学性能,但硬度、表面耐磨性和断裂韧性值更高。在案例研究中,以重量计添加2%的高岭土(未煅烧和煅烧形式)表现出最高的力学性能。
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引用次数: 3
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