Open Ceramics最新文献_第2页

Multi-material functionally graded additive manufacturing of zirconia ceramic: A systematic review

IF 2.9

Open Ceramics Pub Date : 2025-01-16 DOI: 10.1016/j.oceram.2025.100741

Sinan A. Shwailiya , Mahammed Rashid Hameed

{"title":"Multi-material functionally graded additive manufacturing of zirconia ceramic: A systematic review","authors":"Sinan A. Shwailiya , Mahammed Rashid Hameed","doi":"10.1016/j.oceram.2025.100741","DOIUrl":"10.1016/j.oceram.2025.100741","url":null,"abstract":"<div><div>The objective of this review was to investigate dental literature for attempts including graded, layered or multi-material Additive Manufacturing of dental ceramics, with a goal to improve zirconia dental restorations, limitations related to decreased translucency and weak adhesion to tooth structure of zirconia materials may be noticed in routine dental practice. Additive Manufacturing (AM) is gaining interest as a manufacturing method that may replace Subtractive Manufacturing (SM). Functionally Graded Additive Manufacturing (FGAM) can produce a functionally graded material in 3D printing techniques; it allows for adjusting the material chemical structure and phase across its section, innovation of new composite materials and modifications of the design using a single construction step. The need for veneering and lamination of zirconia restorations inspired the authors to investigate FGAM technologies for a solution. An extensive search was conducted on experiments regarding AM to construct multi-material or graded designs, main findings were listed in a try to achieve a favorable material manufacturing technique for application in restorative dentistry.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"21 ","pages":"Article 100741"},"PeriodicalIF":2.9,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160275","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

Thermal conductivity of silica refractories and its temperature dependence during thermal cycling, compared to silicite and sandstone

IF 2.9

Open Ceramics Pub Date : 2025-01-10 DOI: 10.1016/j.oceram.2025.100735

Lucie Kotrbová , Tereza Uhlířová , Willi Pabst , Jana Hubálková , Miroslav Kotouček

{"title":"Thermal conductivity of silica refractories and its temperature dependence during thermal cycling, compared to silicite and sandstone","authors":"Lucie Kotrbová , Tereza Uhlířová , Willi Pabst , Jana Hubálková , Miroslav Kotouček","doi":"10.1016/j.oceram.2025.100735","DOIUrl":"10.1016/j.oceram.2025.100735","url":null,"abstract":"<div><div>The thermophysical properties of silica refractories are important for their potential application as high-temperature thermal energy storage (HT-TES) media. In this paper, we report new measurements of thermal conductivity and thermal diffusivity by plane-source techniques and the laser-flash technique, respectively. The latter is also used to determine the temperature dependence of the thermal conductivity from room temperature to 800 °C during heating and cooling. It is shown that for a silica refractory with porosity 21 % the experimentally measured thermal conductivity (1.3–1.6 W/mK) is significantly lower than the analytical and numerical predictions for spherical, polyhedral and concave pores (3.1–4.7 W/mK), which indicates the influence of microcracks. The anomaly in the temperature dependence below ∼200 °C can be attributed to the phase transitions of cristobalite and tridymite, but above this temperature the thermal conductivity increases, whereas that of silicite and sandstone decreases. Thermal cycling leads to microcrack-induced damage.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"21 ","pages":"Article 100735"},"PeriodicalIF":2.9,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160358","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

Aqueous tape casting of titanium-doped lithium metazirconate (Ti-Li2ZrO3) sheets for solid-state electrolyte applications

IF 2.9

Open Ceramics Pub Date : 2025-01-09 DOI: 10.1016/j.oceram.2025.100737

Nicolás Gabriel Orsetti , Domingo Pérez-Coll , Gabriel Lorenzo , Rodrigo Moreno , Gustavo Suárez

{"title":"Aqueous tape casting of titanium-doped lithium metazirconate (Ti-Li2ZrO3) sheets for solid-state electrolyte applications","authors":"Nicolás Gabriel Orsetti , Domingo Pérez-Coll , Gabriel Lorenzo , Rodrigo Moreno , Gustavo Suárez","doi":"10.1016/j.oceram.2025.100737","DOIUrl":"10.1016/j.oceram.2025.100737","url":null,"abstract":"<div><div>Ti-doped lithium zirconate (LZTO) sheets were successfully made by aqueous tape casting, by starting from an innovative colloidal synthesis route and optimizing the colloidal processing parameters. Zeta potential and particles size measurements, together with rheological characterization, were performed to adjust the slip composition. Then, the suspension with 1.0 wt% of ammonium polyacrylate dispersant (APA) and solid loading of 31 vol.% resulted in flat and flexible sheets, thinner than 450 µm, by adding 20 wt% of acrylic binder emulsion. After annealing at 1150 °C/15 h, LZTO sheets densified up to 85.5 %, presented a microstructure with grains of 6.4 µm in diameter, and exhibited electrical conductivity values in the order of 10<sup>−7</sup>, 10<sup>−6</sup> and 10<sup>−5</sup> S·cm<sup>−1</sup> at 350, 450 and 600 °C, respectively. Besides, XRD phase analysis revealed monoclinic Li<sub>2</sub>ZrO<sub>3</sub> and minor ZrO<sub>2</sub> impurities originated from Li<sub>2</sub>O volatilization during sintering, but no sign of TiO<sub>2</sub> segregation, indicating the formation of Li<sub>2</sub>Zr<sub>1-X</sub>Ti<sub>X</sub>O<sub>3</sub> solid solution.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"21 ","pages":"Article 100737"},"PeriodicalIF":2.9,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160263","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

Boosting the optical, physical, and gamma-ray attenuation capabilities of barium borate glasses through the addition of Y2O3 and PbO2

IF 2.9

Open Ceramics Pub Date : 2025-01-08 DOI: 10.1016/j.oceram.2025.100736

K.A. Mahmoud , M.I. Sayyed , Shrikant Biradar , Yasser Maghrbi

{"title":"Boosting the optical, physical, and gamma-ray attenuation capabilities of barium borate glasses through the addition of Y2O3 and PbO2","authors":"K.A. Mahmoud , M.I. Sayyed , Shrikant Biradar , Yasser Maghrbi","doi":"10.1016/j.oceram.2025.100736","DOIUrl":"10.1016/j.oceram.2025.100736","url":null,"abstract":"<div><div>The objective of the current study is to develop a new glass series for hybrid uses in optical and γ-ray protective applications. The mentioned glass series is composed of high-purity oxides according to the chemical formula of (10+<em>x</em>)PbO<sub>2</sub>+23BaO+10CaO+(55-x)B<sub>2</sub>O<sub>3</sub>+2Y<sub>2</sub>O<sub>3</sub>; <em>x</em> = 0, 3, 6, and 9 mol% under a melting temperature of 1100 °C. The impact of PbO<sub>2</sub> on the optical properties of the prepared glasses was examined using the T-7200 UV–Vis spectrophotometer. The increase in PbO<sub>2</sub> concentration throughout 10–19 mol% decreases the band gap within the glasses over the ranges of 2.945–2.684 eV (for direct transition) and 2.546–1.975 eV (for indirect transition). Additionally, the refractive index of the prepared glasses increased from 2.531 to 2.747 when the PbO<sub>2</sub> concentration raised within the prepared glasses throughout 10–19 mol%. The radiation shielding ability for prepared glasses was evaluated over the energy interval of 0.015–15 MeV using the Monte Carlo simulation. An increase in PbO<sub>2</sub> concentration throughout 10–19 mol% raises the linear attenuation coefficient (LAC) of prepared glasses over the ranges of 178.961–255.807 cm<sup>–1</sup> (0.015 MeV), 0.304–0.354 cm<sup>–1</sup> (0.8 MeV), and 0.137–0.168 cm<sup>–1</sup> (10 MeV), respectively. The LAC enhancement reduced the thickness equivalent lead, the transmission factor of the prepared glass samples.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"21 ","pages":"Article 100736"},"PeriodicalIF":2.9,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160264","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

Analysis of the structure and magnetic behaviour of cobalt phase in polycrystalline diamond compacts

IF 2.9

Open Ceramics Pub Date : 2025-01-07 DOI: 10.1016/j.oceram.2025.100734

T.T. Ngwekhulu , D.J. Whitefield , I. Sigalas , H.S.L. Sithebe , S.R. Naidoo

{"title":"Analysis of the structure and magnetic behaviour of cobalt phase in polycrystalline diamond compacts","authors":"T.T. Ngwekhulu , D.J. Whitefield , I. Sigalas , H.S.L. Sithebe , S.R. Naidoo","doi":"10.1016/j.oceram.2025.100734","DOIUrl":"10.1016/j.oceram.2025.100734","url":null,"abstract":"<div><div>Three variants of Polycrystalline Diamond (PCD) cutters were manufactured by High Pressure and High Temperature (HPHT) with varying diamond grain sizes ranging from 4 to 25 μm with a Tungsten Carbide (WC<img>Co) substrate base. The structure and magnetic profiles of the PCD tables were analysed using KOERZIMAT 1.097 MS, Scanning Electron Microscopy (SEM), Image Analysis (IA), and Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). The study revealed that the size of the PCD table specimen does not impact the magnetic saturation. A relationship was observed between the amount of metal phase and the magnetic saturation level and the cobalt mean-free path and coercivity were found to be correlated. The PCD layers separated from the substrates revealed that larger diamond compact grain sizes decrease metallic cobalt phase magnetic domains. However, this also leads to a decrease in coercivity due to a decrease in cobalt content. In addition, it is worth noting that the dissolved tungsten (W) remained constant in all three variants. This indicates that the diamond grain size and the presence of the cobalt phase did not impact the amount of dissolved W during the synthesis process. The starting fine grain size (average of 4 μm) led to a magnetic saturation value of 15.56 % after sintering, medium grain size (average of 13 μm) with a saturation value of 13.88 %) while the coarse grain size (average of 25 μm) resulted in a magnetic saturation value of 11.86 %. The observed phenomena can be explained by the increased size of the diamond grains, which leads to a decrease in the cobalt concentration.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"21 ","pages":"Article 100734"},"PeriodicalIF":2.9,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160262","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

Zinc oxides by thermal decomposition synthesis and parameters affecting electrocatalyst activity for CO2 reduction reaction

IF 2.9

Open Ceramics Pub Date : 2024-12-28 DOI: 10.1016/j.oceram.2024.100733

Elías Rodríguez-Jara , Margherita Cavallo , Ryosuke Nakazato , Matthias Quintelier , Keeko Matsumoto , Joke Hadermann , Jadra Mosa , Francesca Bonino , Kiyoharu Tadanaga , Mario Aparicio , Nataly Carolina Rosero-Navarro

{"title":"Zinc oxides by thermal decomposition synthesis and parameters affecting electrocatalyst activity for CO2 reduction reaction","authors":"Elías Rodríguez-Jara , Margherita Cavallo , Ryosuke Nakazato , Matthias Quintelier , Keeko Matsumoto , Joke Hadermann , Jadra Mosa , Francesca Bonino , Kiyoharu Tadanaga , Mario Aparicio , Nataly Carolina Rosero-Navarro","doi":"10.1016/j.oceram.2024.100733","DOIUrl":"10.1016/j.oceram.2024.100733","url":null,"abstract":"<div><div>Electroreduction of CO<sub>2</sub> to obtain fossil fuel-free energy products is a promising avenue reducing anthropogenic greenhouse gas emissions. Catalysts based on Au, Ag and Cu are frequently used. Others based on abundant and low-cost elements such as Zn also report catalytic activity. This work presents a scalable and simple synthesis method of catalysts based on ZnO structures by a controlled thermal decomposition process of Zinc acetate dehydrate. An in-depth study of how modifications of synthesis parameters may affect the final performance of the material as electrocatalyst in CO<sub>2</sub>RR is studied. It has been found that higher values of faradaic efficiency to CO evolution were found for samples synthesised at higher temperatures and higher heating ramp, reaching 69 % at -0.8 V vs RHE. It is of great importance to control over the parameters of the thermal decomposition process as they can greatly affect the final catalytic behaviour of the sample.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"21 ","pages":"Article 100733"},"PeriodicalIF":2.9,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160265","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

PSZB glass as a shielding material: Evaluating physical, mechanical, and gamma ray shielding performance

IF 2.9

Open Ceramics Pub Date : 2024-12-20 DOI: 10.1016/j.oceram.2024.100729

M.I. Sayyed , Chaitali V. More , Ashok Kumar , Yasser Maghrbi

{"title":"PSZB glass as a shielding material: Evaluating physical, mechanical, and gamma ray shielding performance","authors":"M.I. Sayyed , Chaitali V. More , Ashok Kumar , Yasser Maghrbi","doi":"10.1016/j.oceram.2024.100729","DOIUrl":"10.1016/j.oceram.2024.100729","url":null,"abstract":"<div><div>The PbO-SrO-ZnO-B<sub>2</sub>O<sub>3</sub> (PSZB) glasses were synthesized through the melt-quenching. The introduction of larger-sized PbO into the glass matrix led to structural alterations, elucidated by a marginal elevation in density and molar volume values from 4.292 g/cm<sup>3</sup> to 4.922 g/cm<sup>3</sup> and 29.812 cm<sup>3</sup> mol<sup>−1</sup> to 30.676 cm<sup>3</sup> mol<sup>−1</sup> respectively. The expansion of the network was found to contribute to the rise in oxygen molar volume (V<sub>o</sub>) from 15.691 to 19.173 cm<sup>3</sup> mol<sup>−1</sup>. Phy-X software was used to compute the shielding characteristics theoretically in the energy range of 0.015–15 MeV. The mass attenuation coefficients (MAC), half value layer (HVL) and mean free path (MFP) have been tested against photon energy. The radiation shielding capabilities increased with increasing PbO content. The present glasses' HVL are compared to that of different tellurite glasses at 0.1 and 0.15 MeV. PSZB4 glass with greater PbO content (50 mol%) has shown outstanding gamma radiation shielding properties than its counterparts.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"21 ","pages":"Article 100729"},"PeriodicalIF":2.9,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160266","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

The latest research progress on MnZn ferrite and their applications

IF 2.9

Open Ceramics Pub Date : 2024-12-19 DOI: 10.1016/j.oceram.2024.100732

Zhexue Chen , Teng Li , Anping Wang , Minxia Shi , Bangcheng Han

引用次数: 0

Functionalization of LCD glass for the manufacturing of advanced 3D-printed translucent photocatalytic scaffolds

IF 2.9

Open Ceramics Pub Date : 2024-12-16 DOI: 10.1016/j.oceram.2024.100731

Elena Colusso , Hamada Elsayed , Paulina Ożóg , Jozef Kraxner , Dusan Galusek , Enrico Bernardo

引用次数: 0

Tailoring optical properties of (Ce,Pr)O2-δ·(La,Sm,Y)2O3 high entropy oxides by substituting Pr with Gd or Dy for multi-wavelength emission applications

IF 2.9

Open Ceramics Pub Date : 2024-12-14 DOI: 10.1016/j.oceram.2024.100730

Avnee Chauhan , Enrico Bernardo , Dušan Galusek

{"title":"Tailoring optical properties of (Ce,Pr)O2-δ·(La,Sm,Y)2O3 high entropy oxides by substituting Pr with Gd or Dy for multi-wavelength emission applications","authors":"Avnee Chauhan , Enrico Bernardo , Dušan Galusek","doi":"10.1016/j.oceram.2024.100730","DOIUrl":"10.1016/j.oceram.2024.100730","url":null,"abstract":"<div><div>High-entropy oxides (HEOs) has generated considerable research interest because of their novel inherent properties and tuneable functionality. In this study, reactive sintering method was used to synthesize HEOs with three different compositions (Ce,RE)O<sub>2-δ</sub><strong>·</strong>(La,Sm,Y)<sub>2</sub>O<sub>3</sub> [RE=Pr], and CeO<sub>2-δ</sub><strong>·</strong>(RE,La,Sm,Y)<sub>2</sub>O<sub>3</sub> [RE=Gd,Dy]. Replacement of Pr cation with Gd or Dy in the synthesized compositions significantly increased the band gap value from 1.8 eV to 3.13 eV and 3.18 eV respectively. The broader band gap improved luminescent properties of bulk ceramic samples. Strong emissions originating from Ce<sup>3+</sup>, Dy<sup>3+</sup>and Sm<sup>3+</sup> in Dy-containing HEO and from Ce<sup>3+</sup>, Gd<sup>3+</sup> and Sm<sup>3+</sup>in Gd- containing HEO were observed at multiple wavelengths through entire visible region. Under multi-wavelength excitation, effective regulation of the emission colour was achieved, resulting in enhanced photoluminescence performance. The prepared HEOs, CeO<sub>2-δ</sub><strong>·</strong>(RE,La,Sm,Y)<sub>2</sub>O<sub>3</sub> [RE=Gd,Dy] can be considered as a novel materials for white light application (WLED) with excitation at multiple wavelengths and tuneable emission.</div></div>","PeriodicalId":34140,"journal":{"name":"Open Ceramics","volume":"21 ","pages":"Article 100730"},"PeriodicalIF":2.9,"publicationDate":"2024-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159385","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