Article
Materials Science, Ceramics
Ming Feng, Guorong Ji, Yaqiao Wu, Guomin Li, Kaiyue Wang, Yuming Tian
Summary: Adding MnO2 is effective in enhancing the flexural strength of ceramics, and the content of H3BO3 and sintering temperature are also key factors in manufacturing optimal ceramics.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Chemistry, Physical
Saleh Zidan, Nikolaos Silikas, Suhad Al-Nasrawi, Julfikar Haider, Abdulrahman Alshabib, Alshame Alshame, Julian Yates
Summary: The study demonstrates that silane-treated zirconia nanoparticles significantly improve the surface hardness and flexural strength of high-impact heat-cured acrylic resin-zirconia nanocomposites.
Article
Polymer Science
Francesco De Angelis, Mirco Vadini, Matteo Buonvivere, Antonio Valerio, Michele Di Cosola, Adriano Piattelli, Virginia Biferi, Camillo D'Arcangelo
Summary: Recent studies show that graphene incorporation in dental materials improves their mechanical properties but may not be superior to traditional materials in terms of hardness and mechanical response to compressive stress. In this study, the flexural strength, compressive strength, and hardness of a graphene-reinforced resin, a conventional resin, and a bis-acryl composite resin were compared. Flexural strength did not differ significantly among the materials. However, the conventional resin had a higher flexural modulus and stiffness compared to the graphene-reinforced resin. The hardness of the conventional resin was significantly higher than that of the graphene-reinforced resin and the traditional resin.
Article
Chemistry, Physical
Abdulaziz Alhotan, Julian Yates, Saleh Zidan, Julfikar Haider, Nikolaos Silikas
Summary: The flexural strength and surface hardness of heat-cured PMMA were significantly improved by adding ZrO2 nanoparticles, TiO2 nanoparticles, and E-glass fibre. The optimal filler concentrations for enhancing flexural strength were found to be between 3-5% ZrO2, 1.5% TiO2, and 3-7% E-glass fibre. Fillers at a concentration of 3 wt.% and above significantly improved hardness for all composites.
Article
Materials Science, Ceramics
Seema Patil, Deepak Rajaram Patil, In Chul Jung, Jungho Ryu
Summary: This study systematically investigated the effect of cooling rates on the microstructural evolution and residual stress of ATZ composites after sintering. The results showed that the ATZ composite with a cooling rate of -1 degrees C/min exhibited the highest fracture toughness and the lowest tensile residual stress.
CERAMICS INTERNATIONAL
(2022)
Article
Construction & Building Technology
Kerstin Elert, Pedro Bel-Anzue, Miguel Burgos-Ruiz
Summary: The composition, structure, and reactivity of gypsum are closely related to its calcination temperature. However, there is a lack of systematic studies relating these characteristics to the mechanical properties and weathering resistance of plasters. In this study, the hydration behavior of gypsum calcined at different temperatures was examined, and the underlying mechanisms affecting plaster performance were identified. These findings enhance the understanding of traditional gypsum plaster performance and offer opportunities for developing sustainable building materials.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Physical
Mohit Kheur, Tabrez Lakha, Saleha Shaikh, Supriya Kheur, Batul Qamri, Lee Wan Zhen, Nadin Al-Haj Husain, Mutlu Oezcan
Summary: This study evaluated the effects of different simulated chairside grinding and polishing protocols on the physical and mechanical properties of monolithic zirconia. The results showed that grinding with diamond burs increased surface roughness, while grinding with tungsten carbide burs significantly reduced flexural strength. Compared to the control group, grinding with diamond burs did not weaken zirconia, but further polishing was required.
Article
Materials Science, Ceramics
Karolina Kminikowska, Daniela Herman, Adam Pander
Summary: This paper investigates the influence of in situ crystallization of aluminum borate whiskers on the microstructure and mechanical properties of electrocorundum and microcrystalline alumina glass-ceramic porous composites. The results show that the crystallization process varies in both composites, affecting their microstructure and mechanical properties. An increase in mechanical tensile strength of 36% was observed for both composites, with the highest tensile strength depending on the type of abrasive grain and the amount of whisker precursor added. Furthermore, a significant increase in Young's modulus values was observed for composites containing 40 wt% precursor: by 45% for electrocorundum and by 52% for microcrystalline alumina.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Siqi Ma, Peigang He, Shengjian Zhao, Hualong Yang, Qikun Wang, Wenjiu Duan, Song Chen, Xiaoming Duan, Dechang Jia, Yu Zhou
Summary: SiC whiskers have a significant impact on the flexural strength of SCWS/KGP composites, and the flexural strength can be further enhanced with increasing heat treatment temperatures.
CERAMICS INTERNATIONAL
(2021)
Article
Dentistry, Oral Surgery & Medicine
Alper Ozdogan, Hatice Ozdemir
Summary: Repeated firing can have a negative impact on the mechanical properties of lithium disilicate glass-ceramics, particularly on surface hardness and fracture toughness.
JOURNAL OF PROSTHETIC DENTISTRY
(2021)
Article
Materials Science, Ceramics
Betul Kafkaslioglu Yildiz, Yahya Kemal Tur
Summary: High flexural strength is crucial for a ceramic armor component to withstand high tensile stresses and multiple hits, as it helps protect the structural integrity. The study examined the effect of different ZrO2 content on the flexural strength of Al2O3-ZrO2 composites, and found that the composite with 20% ZrO2 had the highest strength.
CERAMICS INTERNATIONAL
(2021)
Article
Construction & Building Technology
Zonghua Xu, Liting Yu, Bao Lu, Jinfeng Sun, Zhenshan Liu, Hamdy M. Naguib, Guihua Hou
Summary: In this study, triethylene glycol was used as a modifier for rankinite cement carbonation to induce the formation of aragonite whiskers and prepare high-flexural-strength cement. The research focused on the effects of different admixture amounts of TEG on aragonite formation and mechanical strength enhancement. The results demonstrated significant improvements in flexural and compressive strengths of the carbonated cement mortar specimens compared to the reference sample, attributed to the growth of aragonite whiskers in the cement paste.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Polymer Science
Gulsum Ceylan, Serkan Emik, Tuncer Yalcinyuva, Emin Sunbuloglu, Ergun Bozdag, Fatma Unalan
Summary: This study investigated the effects of different cross-linking agents with varying chain lengths and flexibilities on the mechanical properties of PMMA. The results showed that there was no significant increase in flexural strength, elastic modulus, or impact strength with the addition of cross-linking agents. However, the surface hardness of PMMA notably decreased with the addition of PEGDMA in concentrations ranging from 5% to 20%. The incorporation of cross-linking agents in concentrations ranging from 5% to 15% led to an improvement in the mechanical properties of PMMA.
Article
Materials Science, Multidisciplinary
M. Kannan, Satyendra Singh, Raja Ram Prasad
Summary: Three compositions of calcia-stabilised zirconia (CSZ) with varying percentages were prepared using cryo-milling. The effects of sintering conditions and mechanical properties of CSZ were studied. It was found that increasing the calcia content improved hardness, flexural strength, and compressive strength until full stabilisation of zirconia occurred. Higher sintering temperature and shorter holding time also had a positive impact on the mechanical properties. CSZ obtained through cryo-milling and sintered at high temperature was suitable for dental applications.
Article
Engineering, Biomedical
Yong Chen, Gulsah Caneli, Rashed Almousa, Dong Xie
Summary: A non-leaching antibacterial bone cement has been developed with enhanced antibacterial function against both gram-positive and gram-negative bacteria. It also showed comparable flexural strength and slightly higher flexural modulus compared to commercial bone cement. Increasing the content of antibacterial agent and filler loading improved antibacterial activity significantly.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
