International Journal of Ceramic Engineering & Science最新文献

{"title":"Feasibility of production fired bricks based lateritic soil at very low temperature","authors":"Jordan Valdès Sontia Metekong,&nbsp;Cyriaque Rodrigue Kaze,&nbsp;Elie Kamseu,&nbsp;Florence Uphie Chinje,&nbsp;Thomas Tamo Tatietse","doi":"10.1002/ces2.10225","DOIUrl":"10.1002/ces2.10225","url":null,"abstract":"<p>The present project deals with the production of lateritic soil based bricks under different curing temperatures (28°C–150°C). A fraction of 10–30 wt% amount alkaline solution was added to improve the reactive phase content. The raw materials and hardened products were characterized using X-ray diffraction (XRD), fourrier transform infrared spectroscopy (FTIR), mechanical properties and scanning electron microscope analysis. The results show that the addition of alkaline solution (30%) and the curing temperature (150°C) have a beneficial influence on physical properties (bulk density: 1.77 g/cm³, water absorption: 16.98%, and porosity: 30.13%) and mechanical performances (flexural: 6.61 MPa and compressive: 13.57 MPa). Compared with the code requirements for stabilized earth blocks, the compressive strength was higher than the minimum required. Microstructural investigations were also carried out to confirm the macrostructural properties. The above-mentioned process appears to be a suitable candidate for engineering applications such as the stabilization of earth roads.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10225","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141372360","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}

{"title":"Porous alumina-based ceramics with very low thermal conductivity prepared by the starch consolidation route","authors":"Julian Alzukaimi,&nbsp;Rafi Jabrah","doi":"10.1002/ces2.10226","DOIUrl":"10.1002/ces2.10226","url":null,"abstract":"<p>Alumina-based porous ceramics were fabricated via the starch consolidation casting route, using titanium oxide as a sintering additive. Alumina-titania-starch slurries with starch contents of 2.5, 5, 7.5, and 10 wt% relative to the alumina-titania system were prepared. Titania was added to the slurries in proportions of 0, 1, 3, and 5 wt%, relative to alumina. The effects of starch and titania contents in the green bodies on the linear and volumetric shrinkage, as well as the total and open porosities of the sintered alumina product, were investigated. The effect of titania addition on mechanical, electrical, and thermal properties of the obtained porous alumina ceramics was studied. Microstructure and pores morphology were characterized by SEM. The alumina-based ceramics obtained had external porosities that varied between 54 and 76 vol%. Thermal conductivities as low as 0.06–0.1 W/m.K were achieved and the volume electrical resistivity ranged from 3.6 to 600 GΩ·m, while compressive strengths up to 2.8 MPa for a titania ratio of 1 wt% were attained.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10226","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141270144","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}

{"title":"An overview of dental glass–ceramics: From material design to the manufacturing process","authors":"Yongfang Jiang,&nbsp;Changbo Zhang,&nbsp;Jie Xu,&nbsp;Jiamin Xu,&nbsp;Xue-Qing Zhan,&nbsp;Ning Ma,&nbsp;Fang-Chang Tsai","doi":"10.1002/ces2.10224","DOIUrl":"10.1002/ces2.10224","url":null,"abstract":"<p>As a subserie of the dental ceramic material family, glass–ceramics are favored for their excellent aesthetic properties. The feasibility of current commercially available dental glass–ceramics applications has been proven, while the assurance and development of more functional properties for them are still being explored. Effective utilization of various modification mechanisms by adjusting the chemical composition and microstructure is essential to improve the mechanical properties, aesthetic properties, and other properties such as biocompatibility of dental restorative materials. Among them, the mechanical properties of restorations should take into account the mechanical properties of glass ceramics and the final restoration (restoration and tooth set) in the mechanical behavior. This paper provides an overview of the chemical composition design, classification of microstructure, property requirements, and strengthening methods applied to dental glass–ceramics, including ion exchange, chain effects, heat treatment modulation, and strengthening mechanisms. In addition, research on traditional hot pressing, subtractive manufacturing, and newly developed additive manufacturing in glass–ceramics are systematically presented. Finally, the tendency of dental glass–ceramics was forecasted by analyzing the relationship between glass–ceramic composition, process, and mechanical properties.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10224","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141730074","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}

{"title":"Exploration of an atomic-scale boron additive in SiAlON ceramics","authors":"Kade A. McGarrity,&nbsp;Priyatham Tumurugoti,&nbsp;Kaijie Ning,&nbsp;Christy George,&nbsp;Yonggang Yan,&nbsp;Kun Wang,&nbsp;Holly Shulman","doi":"10.1002/ces2.10213","DOIUrl":"10.1002/ces2.10213","url":null,"abstract":"<p>SiAlON ceramics are of interest for high-risk applications such as biomedical implants and combustion engine turbines. This work is part of a larger study aimed at leveraging atomic- or molecular-scale additives to control the densification, microstructures, and ultimate structural properties of SiAlONs. Here, we investigate the effects of boron in silicon nitride-based ceramics. The present work demonstrates a possible chemical method for controlling the microstructural development of SiAlONs by incorporating boric acid (H₃BO₃) into the starting powder blend. Raman spectroscopy and ¹¹B solid-state magic angle spinning nuclear magnetic resonance cooperatively indicate that after sintering, boron exists in threefold coordination with nitrogen in the turbostratic boron nitride (t-BN) structure. The results of this work indicate that the incorporation of boron and generation of t-BN bonding in the SiAlON system result in a narrower grain size distribution, a suppression of second phases such as yttrium aluminosilicates, and ultimately, increased flexure strength. A separate fractographic study showed that SiAlONs fabricated with 3 wt% boric acid exhibited fracture origins such as subtle surface flaws or cracks, while lower dopant levels and undoped SiAlONs typically failed from flaws such as inclusions or large grains. It is argued that the modification of the intergranular glass chemistry and resulting generation of t-BN reduces atomic diffusion through the grain boundary phase and inhibits the crystallization of second phases as well as exaggerated grain growth that often characterizes the development of β′-SiAlON.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10213","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140949326","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}

{"title":"Characterization of soda–lime silicate glass bottles to support recycling efforts","authors":"Katy S. Gerace,&nbsp;John C. Mauro","doi":"10.1002/ces2.10217","DOIUrl":"10.1002/ces2.10217","url":null,"abstract":"<p>In 2022, 150 million tons of glass was produced globally, and approximately 47% of that amount was glass hollowware for tableware and food, beverage, and cosmetics packaging. Glass is considered one of the most recyclable materials as its properties and performance do not degrade upon reheating and reforming; yet only 21% of global production is recycled. The most recycled type of glass is soda–lime silicate bottle glass based on its widespread availability and its ability to accommodate higher levels of contamination compared to flat glass and specialty glass. Bottle glass manufacturers melt glass batch that is 10%–60% recycled glass cullet, limited only by the availability of pristine glass cullet that is free of contaminants such as plastic, metal, and organic material. Increasing rates of recycled content in glass manufacturing is stymied by the lack of a supply chain to deliver high quality glass cullet to manufacturers, as well as risk of material incompatibility and contamination. In this work, post-consumer glass bottles of different colors, shapes, and brands were analyzed for chemical composition and thermal properties to quantify variation across five major color families: clear, blue, amber, forest green, and emerald green. This work shows that post-consumer bottles of different colors and brands can be remelted without risk of material incompatibility and presents various processing methods to control color homogeneity in glass produced exclusively from mixed color cullet from recycled glass bottles.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10217","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140663099","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}

{"title":"Development of calcium sulfoaluminate cements from rich-alumina bauxite and marble wastes: Physicochemical and microstructural characterization","authors":"Gaëlle Annick Nyonda Yanze,&nbsp;Achile Nana,&nbsp;Patrick Ninla Lemougna,&nbsp;Rodrigue Cyriaque Kaze,&nbsp;Sylvain Tome,&nbsp;Hubert Rahier,&nbsp;Elie Kamseu,&nbsp;Florence Uphie Chinje","doi":"10.1002/ces2.10216","DOIUrl":"10.1002/ces2.10216","url":null,"abstract":"<p>This work discusses the effect of rich alumina bauxite on the mineralogical composition of calcium sulfoaluminate (CSA) clinker cement on their performances. After preparation of different local raw materials (rich alumina bauxite and marble), they were mixed with 15 wt% of commercial gypsum and pressed at 2 MPa. The obtained pellets were thermally treated at 1200°C to produce clinker, which is use to synthesize the CSA cements. The raw materials as well as products were characterized by many analyses, such as FT-IR, X-ray fluorescence, X-ray diffraction, differential scanning calorimetry (DSC)/thermogravimetry analysis (TGA), isothermal calorimetry (ICC), scanning electron microscope, and physico-mechanical tests. ICC analysis of the powder of clinker cement showed that the reactions are strongly affected by gypsum content. XRD results revealed that clinker and cement present a strong intensity of ye'elimite as main mineral phase. Moreover, the hydrated cement exhibited ettringite and monosulfate as the new phases formed. The compressive strength of hydrated cement reached ∼21 and 28 MPa after 1 and 28 days of curing, respectively. From the aforementioned results, this local rich alumina bauxite can be used to produce high-strength cement for self-leveling materials, which allow their use in engineering and building applications.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10216","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140730394","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}

{"title":"Effect of alkali metal salt addition on disintegration of titania particles precipitated from tetraethyl orthotitanate in ethanol","authors":"Sebastian Zimmermann,&nbsp;Aaron Justin Koenig,&nbsp;Oliver Reich,&nbsp;Lena Bressel","doi":"10.1002/ces2.10215","DOIUrl":"10.1002/ces2.10215","url":null,"abstract":"<p>Inline (or in situ) photon density wave spectroscopy was used to monitor the disintegration of secondary titania particles into their primary particles. Photon density wave spectroscopy can be applied to determine the reduced scattering coefficient <span></span><math>\u0000 <semantics>\u0000 <msubsup>\u0000 <mi>μ</mi>\u0000 <mi>s</mi>\u0000 <mo>′</mo>\u0000 </msubsup>\u0000 <annotation>$mu _{mathrm{s}}^{prime}$</annotation>\u0000 </semantics></math> of a dispersion without dilution or calibration, and thus enables process analysis in materials that are usually unsuitable for established particle characterization techniques. In this work, amorphous titania particles were precipitated from tetraethyl orthotitanate in ethanol by addition of water in presence of different alkali metal salts (NaCl, KCl, CsCl, K₂SO₄) with concentrations between 0 and 1.6 mM. The present results suggest that the synthesized titania secondary particles disintegrate into their primary particles if the electrostatic repulsion between the primary particles is promoted. This can be achieved by an increased alkali chloride concentration in the synthesis or by addition of larger alkali metal ions. In contrast, the particles are only weakly charged upon addition of sulfate ions, and the disintegration stops. The conclusions drawn from photon density wave spectroscopy results are supported by gravimetric determination of the particle yield, dynamic light scattering measurements, zeta-potential measurements, and electron micrographs. Additionally, the disintegration was driven to completion by addition of hydrochloric acid to create a transparent suspension of titania primary particles as small as 4.7 nm.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10215","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140385776","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}

{"title":"Influence of electrical polarization on thrombogenicity of titania nanotubes","authors":"Jyorthana Rajappa Muralidhar,&nbsp;Kabilan Sakthivel,&nbsp;Madanagurusamy Sridharan,&nbsp;Masanori Kikuchi","doi":"10.1002/ces2.10214","DOIUrl":"10.1002/ces2.10214","url":null,"abstract":"<p>The development of hemocompatible biomaterials with antithrombogenic surface coatings remains a challenge in cardiovascular applications. There is interest in negatively charged surfaces that inhibit thrombus formation through electrostatic repulsion between the biomaterial surface and negatively charged platelets. Hence, the present study investigated the influence of electrical polarization on the thrombogenicity of titania nanotubes (TNT), which are promising candidates for inhibiting thrombogenicity via surface modification. TNTs were formed on commercially pure titanium plate by the electrochemical anodization technique using platinum as a counter electrode at 60 V for 24 h with two kinds of electrolytes (hydrofluoric acid diluted with dimethyl sulfoxide [D-TNT] or ethylene glycol [E-TNT]) followed by an annealing at 540°C for 3 h in air. Both TNTs were mixture of anatase and rutile, and the D-TNT had a diameter of 108.76 ± 2.55 nm and the E-TNT, 53.833 ± 2.42 nm. The TNTs were electrically polarized at 100 V of DC field and 400°C for 1 h. Water contact angle measurements showed that the non-polarized (0-) TNT surface was hydrophilic whereas the positively (P-) or negatively (N-) polarized TNT surfaces showed high-hydrophilicity. Antithrombogenicity was evaluated using the thrombus coverage area ratio (TCAR) after soaking the TNTs in bovine whole blood. The TCARs for 0-polarized E- and D-TNTs were 5.30 ± 4.34% and 36.3 ± 5.8% and for P-polarized E-TNT and D-TNT were 1.50 ± 0.77% and 2.76 ± 1.07%, whereas no thrombus formation (0 ± 0%) for N-polarized E-TNT and very few thrombus formation (0.12 ± 0.22%) for N-polarized D-TNT. The electrostatic repulsion between the N-polarized E-TNTs and platelets completely inhibits thrombus formation, which cannot be achieved by the nanomorphology and high-hydrophilicity of other TNTs. Hence, N-TNTs formed by electrical polarization are potential candidates for cardiovascular devices, such as artificial heart valves with long-term hemocompatibility.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10214","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140233821","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}

{"title":"Fabrication of biomimetic scaffold through hybrid forming technique","authors":"Dilek Celik,&nbsp;Cem Bulent Ustundag","doi":"10.1002/ces2.10210","DOIUrl":"10.1002/ces2.10210","url":null,"abstract":"<p>Bone tissue engineering procedures require the use of a scaffold with a sufficiently porous structure, which serves as a three-dimensional template for cell attachment, followed by tissue regeneration and vascularization both in vitro and in vivo. This study aimed to create scaffold material with a unique hybrid forming that met these parameters. Slip casting and freeze-drying processes were used with a hybrid forming approach to create a bone scaffold based on hydroxyapatite (HA) mimicking the structure of cortical and cancellous bones, respectively. HA was synthesized by the wet chemical precipitation method. Fourier-transform infrared spectroscopy, dynamic light scattering, X-ray diffraction, thermogravimetric analysis-differential thermal analysis, Brunauer-Emmett-Teller, He Pycnometer, and scanning electron microscope analyses were performed to characterize the scaffold. According to analysis results, HA particle size was found at 137.8 nm. The optimum sintering temperature was determined to be 1300°C. The specific surface area of the HA powder was measured as 55.11 m²/g. The total open porosity of the hybrid scaffold was calculated as 70%. Scaffold successfully substituted both cancellous and cortical layers of bone regarding structural characteristics, porosity, and mechanical strength. Considering morphological characteristics, a hybrid scaffold might facilitate vascularization, osteoinduction, and osteoconduction. Research findings suggest that the hybrid design strongly resembled natural bone and is suitable for both load-bearing and non-bearing bones.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10210","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140240824","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}

{"title":"Effect of cation addition on silica scale on glass surfaces","authors":"Shogo Hayashi,&nbsp;Shota Hatano,&nbsp;Tomoki Kobayashi,&nbsp;Noritaka Saito,&nbsp;Kunihiko Nakashima","doi":"10.1002/ces2.10203","DOIUrl":"10.1002/ces2.10203","url":null,"abstract":"<p>Mineral components in tap water generally contaminate sanitary ware. In this study, various cations (Mg, Ca, and Al) were added to an aqueous solution containing silica to prevent water stains on sanitary ware. The particle size in the aqueous solution was measured and observed to increase for all cations. To create artificial water stains, a solution containing the cations and silica was dropped onto glass and allowed to dry. When these water stains were removed by sliding, the removal rate was higher for the water stains that contained the cations. This trend was attributed to the formation of precipitates owing to the reaction of silica with the added cations in the aqueous solution. The formation of these precipitates possibly increased the particle size and brittleness of water stains owing to their sparse structure. These findings provide insights into silica-scale removal, which can improve the cleanliness of sanitary ware and reduce the frequency of maintenance.</p>","PeriodicalId":13948,"journal":{"name":"International Journal of Ceramic Engineering & Science","volume":"6 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ces2.10203","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140164252","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}