International Journal of Ceramic Engineering & Science最新文献_第10页

Effect of particle size of calcite on the stacking order of kaolinite during mechanical grinding 机械研磨过程中方解石粒度对高岭石堆积顺序的影响

International Journal of Ceramic Engineering & Science Pub Date : 2022-11-17 DOI: 10.1002/ces2.10165

Shingo Machida, Kenichi Katsumata, Atsuo Yasumori

{"title":"Effect of particle size of calcite on the stacking order of kaolinite during mechanical grinding","authors":"Shingo Machida, Kenichi Katsumata, Atsuo Yasumori","doi":"10.1002/ces2.10165","DOIUrl":"https://doi.org/10.1002/ces2.10165","url":null,"abstract":"The effect of calcium carbonate (CaCO3) particles on the stacking order of kaolinite, a layered clay mineral, during the mechanical grinding process was demonstrated by grinding of expanded kaolinite without impurities (Ex-Kaol), a methoxy-modified kaolinite, in the presence and absence of calcite with different particle sizes. The X-ray diffraction patterns of the ground raw materials revealed that the relative intensity of the reflection corresponding to stacking direction of kaolinite decreased in the absence of calcite particles. The presence of calcite particles suppressed the disruption of the stacking order of kaolinite due to the breaking of calcite particles. In addition, this suppression was weakened using calcite particles of smaller size. Meanwhile, the raw ground material containing smaller calcite particles converted into the targeted product faster than the raw ground material containing larger calcite particles. These results indicated that the particle sizes of raw materials are important for solid-state reactions including kaolinite.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10165","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50151844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Mathematical modeling and simulation of porosity on thermomechanical properties of UHTCs under hypersonic conditions 高超音速条件下孔隙率对UHTC热机械性能的数学建模与模拟

International Journal of Ceramic Engineering & Science Pub Date : 2022-11-12 DOI: 10.1002/ces2.10168

Carmine Zuccarini, Karthikeyan Ramachandran, Stefano Russo, Yasith C. Jayakody, Doni Daniel Jayaseelan

{"title":"Mathematical modeling and simulation of porosity on thermomechanical properties of UHTCs under hypersonic conditions","authors":"Carmine Zuccarini, Karthikeyan Ramachandran, Stefano Russo, Yasith C. Jayakody, Doni Daniel Jayaseelan","doi":"10.1002/ces2.10168","DOIUrl":"https://doi.org/10.1002/ces2.10168","url":null,"abstract":"Ultrahigh temperature ceramics (UHTCs) were analyzed for their suitability in hypersonic flight conditions using balanced heat equations, transport equation, and finite element modeling technique. Mathematical model was derived on the assumption that the induced porosity follows linear and parabolic solutions of Laplace equation and applied external load mimicking hypersonic conditions with critical heat flux ranging between 7 and 44 MW/m2. Simulations were carried out with four different UHTCs combinations and the results outlined a temperature rise exceeding 4700°C with deformation observed on the fixed area and where the heat flux was generated. The influence of porosity had a greater impact on the performance of the material as it led to a reduction in deformation compared to dense samples. Porous UHTCs exhibited a good thermal shock resistance owing to the release of thermal stresses through pores, which also enhanced the thermal insulation of the structure.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10168","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50150039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effect of the B4C particles on the brazed joints of SiC ceramics and 2219 aluminum alloy B4C颗粒对SiC陶瓷与2219铝合金钎焊接头的影响

International Journal of Ceramic Engineering & Science Pub Date : 2022-11-10 DOI: 10.1002/ces2.10166

Xianfen Li, Kai Cai, Peng Teng, Peng Hua, Huimin Cheng, Wei Zhou

{"title":"Effect of the B4C particles on the brazed joints of SiC ceramics and 2219 aluminum alloy","authors":"Xianfen Li, Kai Cai, Peng Teng, Peng Hua, Huimin Cheng, Wei Zhou","doi":"10.1002/ces2.10166","DOIUrl":"https://doi.org/10.1002/ces2.10166","url":null,"abstract":"A two-step process, including the premetallization of the SiC ceramic by Ag-26.7Cu-4Ti+B4C and the followed brazing with the Al-based filler alloy, was developed to join 2219 aluminum alloy and the metallized SiC. The influence of metallization temperature and the B4C addition on the microstructure and mechanical properties of the joint was analyzed. The reaction products of Ti and B4C were detected in the brazing seam, such as Ti2B, TiC and graphite. With increasing of metallization temperature and B4C addition content, the shear strength of joint first increased and then decreased. The joint shear strength reached 14.0 MPa when SiC metallized with Ag-26.7Cu-4Ti+1%B4C at 930°C for 10 min, which showed that appropriate addition of B4C in Ag-26.7Cu-4Ti metallization layer could regulate the coefficient of thermal expansion difference between 2219 aluminum alloy and SiC to relieve the residual stress and improve the shear strength of their brazed joint.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10166","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50128050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of methods to prevent pin-holing defect in tableware ceramic industry 餐具陶瓷工业中防止针孔缺陷的方法探讨

International Journal of Ceramic Engineering & Science Pub Date : 2022-10-09 DOI: 10.1002/ces2.10164

Muhammad Hasanuzzaman, Faridul Islam, ARMH Rashid

{"title":"Investigation of methods to prevent pin-holing defect in tableware ceramic industry","authors":"Muhammad Hasanuzzaman, Faridul Islam, ARMH Rashid","doi":"10.1002/ces2.10164","DOIUrl":"10.1002/ces2.10164","url":null,"abstract":"Pin-holing is one of the major glazing defects that the tableware ceramic industry is experiencing. It is evident from this research work that the pin-holing defect can be prevented or at least reduced by optimizing composition and sintering profile, which in turn yields pin-hole-free tableware ceramics. Differential scanning calorimeter/thermo gravimetric analysis and dilatometer are found to be effective to understand the thermal behavior of specific ceramic tableware bodies and glaze. Dilatometry was employed to investigate the densification behavior and it was found that densification of the ceramic body reached completion by 1300°C. The final optimum firing temperature and soaking time, which are believed to influence the microstructure and mechanical properties of the ceramicware, were found to be 1300°C and 90 min, respectively. The microstructural change of the ceramic body and glaze sintered at different temperatures and times is observed under field emission scanning electron microscopy. It was found that the existence of pin-holing defect largely depends on the feldspar and quartz content in glaze raw material as well as the applied firing profile, and the result was found satisfactory when the ratio (quartz/feldspar) was ∼2.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"4 6","pages":"416-425"},"PeriodicalIF":0.0,"publicationDate":"2022-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10164","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124283467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Enhancement of bioactivity of collagen–hydroxyapatite nanocomposite on He+ ion implantation 胶原-羟基磷灰石纳米复合材料在He+离子注入下生物活性的增强

International Journal of Ceramic Engineering & Science Pub Date : 2022-09-13 DOI: 10.1002/ces2.10163

Bhoomika V. Jogiya, Kashmira P. Tank, Mihir J. Joshi

{"title":"Enhancement of bioactivity of collagen–hydroxyapatite nanocomposite on He+ ion implantation","authors":"Bhoomika V. Jogiya, Kashmira P. Tank, Mihir J. Joshi","doi":"10.1002/ces2.10163","DOIUrl":"10.1002/ces2.10163","url":null,"abstract":"This study focuses on the effect of He+ ion implantation on the structural, microstructural, and bioactivity of the collagen–hydroxyapatite (Cg/HAP) nanocomposite for orthopedics as well as vascular stent applications. The material is successfully synthesized by a surfactant-mediated approach and has been investigated using X-ray diffraction (XRD), energy-dispersive spectroscopy, scanning electron microscope, and bioactivity analysis techniques. The presence of the characteristic peaks of collagen in the Fourier transform infrared spectrum confirms the successful synthesis of Cg/HAP nanocomposite. Observation of a blueshift reduction in the intensity and broadening of the peaks corresponding to the asymmetric stretching mode of PO4−3 (1034–1083 cm−1) on the HAP addition indicates a strong interaction between the HAP nanoparticles and collagen. Energy-dispersive spectroscopy analysis confirmed the phase of protein content within the sample. On ion implantation, a reduction in the crystalline size is observed from the XRD analysis. The enhancement in the bioactivity of implanted Cg/HAP composite is based on electronic loss. The electronic interaction through various processes makes the surface of the composites charged leading to more surface deposition activity from simulated body fluid studies, which is further confirmed by the higher surface roughness of the implanted samples.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"4 6","pages":"408-415"},"PeriodicalIF":0.0,"publicationDate":"2022-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10163","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131682705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of novel green phosphate pigments with phosphophyllite composition 新型磷石绿色磷酸盐颜料的合成

International Journal of Ceramic Engineering & Science Pub Date : 2022-09-07 DOI: 10.1002/ces2.10162

Hiroaki Onoda, Rina Kanemoto

引用次数: 1

Processing and properties of PSZT 95/5 ceramics with varying Ti and Nb substitution 不同Ti和Nb取代的pszt95 /5陶瓷的加工与性能

International Journal of Ceramic Engineering & Science Pub Date : 2022-09-05 DOI: 10.1002/ces2.10160

Eric W. Neuman, Nicholas Anselmo, Amber Meyer, Sophie Grier, Christopher B. Diantonio, Mark A. Rodriguez, Rose Torres, Brian Brane, James G. Griego

{"title":"Processing and properties of PSZT 95/5 ceramics with varying Ti and Nb substitution","authors":"Eric W. Neuman, Nicholas Anselmo, Amber Meyer, Sophie Grier, Christopher B. Diantonio, Mark A. Rodriguez, Rose Torres, Brian Brane, James G. Griego","doi":"10.1002/ces2.10160","DOIUrl":"10.1002/ces2.10160","url":null,"abstract":"Niobium doped lead-tin-zirconate-titanate ceramics near the PZT 95/5 orthorhombic AFE – rhombohedral FE morphotropic phase boundary Pb1-0.5y(Zr0.865-xTixSn0.135)1-yNbyO3 were prepared according to a 22+1 factorial design with x = 0.05, 0.07 and y = 0.0155, 0.0195. The ceramics were prepared by a traditional solid-state synthesis route and sintered to near full density at 1250°C for 6 h. All compositions were ∼98% dense with no detectable secondary phases by X-ray diffraction. The ceramics exhibited equiaxed grains with intergranular porosity, and grain size was ∼5 µm, decreasing with niobium substitution. Compositions exhibited remnant polarization values of ∼32 µC/cm2, increasing with Ti substitution. Depolarization by the hydrostatic pressure induced FE-AFE phase transition was drastically affected by variation of the Ti and Nb substitution, increasing at a rate of 113 MPa /1% Ti and 21 MPa/1% Nb. Total depolarization output was insensitive to the change in Ti and Nb substitution, ∼32.8 µC/cm2 for the PSZT ceramics. The R3c-R3m and R3m-Pm3m phase transition temperatures on heating ranged from 90 to 105°C and 183 to 191°C, respectively. Ti substitution stabilized the R3c and R3m phases to higher temperatures, while Nb substitution stabilized the Pm3m phase to lower temperatures. Thermal hysteresis of the phase transitions was also observed in the ceramics, with transition temperature on cooling being as much as 10°C lower.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"4 6","pages":"391-401"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10160","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123787928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Organic pollutants removal by Quartz crystals 石英晶体去除有机污染物

International Journal of Ceramic Engineering & Science Pub Date : 2022-08-29 DOI: 10.1002/ces2.10161

Sahil Verma, Rahul Vaish

{"title":"Organic pollutants removal by Quartz crystals","authors":"Sahil Verma, Rahul Vaish","doi":"10.1002/ces2.10161","DOIUrl":"10.1002/ces2.10161","url":null,"abstract":"Quartz crystals are found in nature. It is believed that these crystals are eco-friendly and known for healing, decoration, and gem therapy. However, there is no scientific evidence of such effects, except it is a piezoelectric material. The piezocatalytic effect is viewed as having significant potential for tackling environmental challenges such as water cleaning. The piezocatalytic performance of Quartz crystals was examined and reported for a few dyes degradation. The purity of these crystals was confirmed via X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy analysis before experimentation. Degradation of organic dyes methylene blue, methylene violet, and Rhodamine b (RB) dyes from aqueous solutions was observed using these crystals. Naturally occurred Quartz was exposed to ultrasonic vibrations for dyes and its piezocatalytic property was studied. Furthermore, using the germination index of Cicer arientium the treated water was utilized as a growth parameter. The signature of dye degradation indicates their eco-friendly behavior. It can be assumed that these crystals can actively participate to clean organic pollutants under the application of mechanical vibrations.","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"4 6","pages":"354-360"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10161","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116163072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Photoactivity of nanostructured porous Nb2O5: Effect of Pt, Ta, Cu, and Ti impregnation 纳米结构多孔Nb2O5的光活性:Pt、Ta、Cu和Ti浸渍的影响

International Journal of Ceramic Engineering & Science Pub Date : 2022-08-20 DOI: 10.1002/ces2.10159

Leonardo Marasca Antonini, Janice Adamski, Fabiano Bernardi, Cesar Aguzzoli, Roberto Hübler, Célia de Fraga Malfatti

引用次数: 0

Research, standards, and data needs for industrialization of ceramic direct ink writing 陶瓷直墨书写产业化的研究、标准和数据需求

International Journal of Ceramic Engineering & Science Pub Date : 2022-08-04 DOI: 10.1002/ces2.10158

Andrew J. Allen, Igor Levin, Russell A. Maier

引用次数: 1