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Letteratura scientifica selezionata sul tema "Zirconia"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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Articoli di riviste sul tema "Zirconia"

Norsham, Nur Fatinhanani Fatimah, and Istikamah Subuki. "Synthetization and Characterization of Yttria Stabilized Zirconia Powder from Amang Zircon Sand." Journal of Advanced Research in Micro and Nano Engineering 28, no. 1 (2024): 105–17. https://doi.org/10.37934/armne.28.1.105117.

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Zirconia is widely used in industry as it exhibits high strength and amazing properties. However, pure zirconia powder is often unstable to be used in high temperature applications due to phase transformation that will lead to fracture and crack. Hence, zirconia is doped with yttrium oxide in order to enhance zirconium content and stability as it helps to hinder the phase transformation of zirconia. Locally available Amang zircon sand from tin tailing industry in Malaysia can be an economical alternative to synthesize zirconia due to the high zirconium content. Sadly, the study on utilizing Am

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Karlina, Elin, Nina Djustiana, I. Made Joni, Renny Febrida, Camellia Panatarani, and Akhyar Dyni Zakyah. "Analisis Mikrostruktur Partikel Zirkoniakalsia-silika (ZrO 2 -CaO-SiO ) Dari Pasir Zirkon Alam Indonesia Menggunakan Metode Spray Pyrolysis." Jurnal Material Kedokteran Gigi 6, no. 1 (2017): 23. http://dx.doi.org/10.32793/jmkg.v6i1.261.

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Indonesian Natural Sand, Zircon, is an Indonesia’s natural resource that contains zirconia, silica, titania and alumina. In Dentistry, zirconia as one of the content in natural zircon sand, have the potential to be the material for filler composites. The purpose of this research was to analyze the Zirconia-Calcium-Silicate Particle (ZrO2CaO-SiO2) synthesized from Indonesia natural sand, zircon, in microstructural way. Methods: By synthesizing ZirconiaCalcium-Silicate particle (ZrO2-CaO-SiO2) from Indonesia natural zircon sand, using spray pyrolysis method. A precursor solution that is used con

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Li, Bing Qiang, Yao Shu, Wen Bin Dai, and Jing Kun Yu. "Effect of Zirconia, Zirconite and Zircon Mullite Additives on the Properties of Alumina Castable." Applied Mechanics and Materials 151 (January 2012): 346–49. http://dx.doi.org/10.4028/www.scientific.net/amm.151.346.

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The effect of the zirconia, zirconite, and zircon mullite additives on the properties of alumina-spinel castable has been investigated in present work. Results showed that the density of castables calcined at 110oC with the addition of zirconia and zirconite was higher than that of zircon mullite. With the increasing amount of additives, the densities of castables added with zirconia and zirconite were increased and that added with zircon mullite had not obviously difference. The apparent porosities of castables heated at 1600oC for 1h were about twice of those calcined at 110oC. The bulk dens

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Stankovic, Jovan, Slobodan Milonjic, and Slavica Zec. "The influence of chemical and thermal treatment on the point of zero charge of hydrous zirconium oxide." Journal of the Serbian Chemical Society 78, no. 7 (2013): 987–95. http://dx.doi.org/10.2298/jsc121010149s.

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Two zirconia samples were prepared by precipitation from aqueous zirconium oxychloride and zirconil sulphate solutions with potassium hydroxide. The prepared zirconia samples were amorphous. The pHpzc values of zirconia samples, determined from NaCl and NaNO3 solutions, were 6.6 ? 0.1 and 6.9 ? 0.1, respectively. After prolonged hydration of zirconia in doubly distilled water, pHpzc decreased to 4.7 ? 0.3. Crystallization into tetragonal (metastable) + monoclinic zirconia appeared at 691 K. Above 873 K, tetragonal metastable phase changes to monoclinic one. It was shown that crystallite sizes

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Meor Sulaiman, Meor Yusoff, Khaironie Mohamed Takip, and Ahmad Khairulikram Zahari. "In Situ XRD Study of Zirconia Phase Transformation Produced from Chemical and Mineral Processes." Materials Science Forum 840 (January 2016): 375–80. http://dx.doi.org/10.4028/www.scientific.net/msf.840.375.

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The high temperature phase transition of zirconia produced from commercial zirconyl chloride chemical was compared with that produced from a Malaysian zircon mineral. Zirconyl chloride was produced from zircon by using the hydrothermal fusion method. Initial XRD diffractogram of these samples at room temperature show that they are of amorphous structure. High temperature XRD studies was then performed on these samples; heated up to 1500°C. The XRD diffractograms shows that the crystalline structure of tetragonal zirconia was first observed and the monoclinic zirconia becomes more visible at hi

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Nur Fatinhanani Fatimah Norsham and Istikamah Subuki. "Effect of Temperature on Zirconia Powder Synthesized from Amang Zirconium Oxychloride Precursor." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 118, no. 1 (2024): 185–95. http://dx.doi.org/10.37934/arfmts.118.1.185195.

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Polymorphic zirconia is economically attractive in various applications due to its low reactivity, high strength, and stability. Zirconia can be synthesized from locally available Amang zircon sand as an inexpensive green alternative as it has a high zirconium content as reported by previous report. Unfortunately, the study was only focused on the formation of zirconium oxychloride despite of high zirconium content from the improved alkali fusion method proposed. Therefore, a further study on zirconia powder calcined in varied temperatures from Amang zirconium oxychloride precursor was done. A

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Yashima, Masatomo, Taka-aki Kato, Masato Kakihana, Mehmet Ali Gulgun, Yohtaro Matsuo, and Masahiro Yoshimura. "Crystallization of hafnia and zirconia during the pyrolysis of acetate gels." Journal of Materials Research 12, no. 10 (1997): 2575–83. http://dx.doi.org/10.1557/jmr.1997.0342.

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Hafnia and zirconia gels were prepared by drying hafnyl or zirconyl acetate solutions. Hafnia and zirconia gels contain both hydroxyl group and bidentate acetates which are directly bonded to the metal ions. Thermal decomposition and crystallization behavior of the gels were investigated through XRD, FT-IR, and TEM. Hafnium-containing gels crystallized directly into stable monoclinic hafnia around 500–540 °C, while zirconium-containing gels first formed metastable tetragonal zirconia around 450 °C. The dissimilar crystallization behavior of the gels into metastable, tetragonal zirconia or into

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Subuki, Istikamah. "Influence on Ratio of NaOH/ZrSiO4 in Alkali Fusion for Amang Zircon Sand." ASM Science Journal 17 (November 25, 2022): 1–10. http://dx.doi.org/10.32802/asmscj.2022.1093.

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Amang Zircon Sand from Amang Onn Sdn. Bhd. mineral company has a high composition of zirconium at 61.63 wt% and low silicon composition at 4.90 wt%. The high composition of zirconium in Amang zircon sand indicates the possibility to synthesise it into a zirconia. Zirconium was synthesised using alkali fusion method with different ratio of NaOH/ZrSiO4 to determine the optimum ratio based on the zirconium yield. Alkali fusion method is coupled with thermal treatment as it will produce a higher yield of zirconium with lower impurities. Then it will be leached with deionised water and hydrochloric

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Djustiana, Nina, Renny Febrida, Camellia Panatarani, Yuliafanny Imarundha, Elin Karlina, and I. Made Joni. "Microstructure Analysis of Zirconia-Alumina-Silica Particles Made from Indonesia Natural Sand Synthesized Using Spray Pyrolysis Method." Key Engineering Materials 720 (November 2016): 285–89. http://dx.doi.org/10.4028/www.scientific.net/kem.720.285.

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Zircon sand is one of Indonesian natural resource that is potential to be used as composite filler. Natural zircon sand can be found in several places in Indonesia, i.e. Riau Islands, Bangka-Belitung, and the Borneo. Zircon sand contains zirconia compound; while ZrO2 is the oxide crystal of zirconia compound. The mechanical and esthetical supremacy of zirconia is the reason why the usage of zirconia as nanocomposite filler mixed with alumina and silica increases. Spray pyrolysis method was used to synthesized natural zircon sand of Indonesia with temperature variety of 400°C, 500°C and 600°C.

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He, Yong Wu, Rui Sheng Wang, Jing Long Bu, Jun Xing Chen, and Zhi Fa Wang. "A Study on Crystallization of Fused Silica/Zirconia Ceramic Composites." Advanced Materials Research 652-654 (January 2013): 286–89. http://dx.doi.org/10.4028/www.scientific.net/amr.652-654.286.

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Fused silica particles and zirconyl chloride were used as main raw material. Meanwhile, ammonia was used as precipitator and polyethylene glycol as dispersant. Firstly, the composite powders were prepared by wet chemical synthesis. Then, fused silica/zirconia ceramic composites containing zirconia with different contents (5%, 15%, 25%, 35% and 45%) were fabricated in reduction atmosphere at 1300°C, 1350°C and 1400°C for 1 h. The thermal expansion ratios and XRD of samples were examined. The analysis of XRD indicated that the cristobalite peaks intensity of sample with more zirconia is lower at

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Più fonti

Tesi sul tema "Zirconia"

REIS, SIGNO T. dos. "Caracterizacao eletrica dos compositos zirconia-niobio e zirconia-titanio." reponame:Repositório Institucional do IPEN, 1993. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10349.

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Made available in DSpace on 2014-10-09T12:37:38Z (GMT). No. of bitstreams: 0 Made available in DSpace on 2014-10-09T14:00:18Z (GMT). No. of bitstreams: 1 05330.pdf: 1385235 bytes, checksum: 83cf2a9d722cc0781168d05ce0005ce0 (MD5) Dissertacao (Mestrado) IPEN/D Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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Khazeni, Nasser. "Synthesis And Characterization Of Zirconium Tungstate-zirconia Core-shell Composite Particles." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615316/index.pdf.

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Thermal mismatch between different components of a system could cause of problems like residual stress induced cracking, thermal fatigue or even optical misalignment in certain high technology applications. Use of materials with customized thermal expansion coefficient is a counter-measure to resolve such problems. Zirconium tungstate (ZrW2O8) with negative thermal expansion coefficient is capable of being used in synthesis of composites with tailored coefficient of thermal expansion (CTE). In this work, the sol-gel method which had been already set up in our group was characterized and the so

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Cain, Markys G. "Zirconia toughened ceramics." Thesis, University of Warwick, 1990. http://wrap.warwick.ac.uk/35750/.

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The objectives for the thesis were to generate tough ceramics utiising the toughening mechanisms inherent to zirconia materials. The aims have been realised with the successful fabrication of hot pressed silicon nitride / zirconia composite ceramics. The zirconia was prestabilised with two different types of dopant additives, yttria and ceria, with the intention of understanding the chemical compatibility with the silicon nitride matrix and the overall effect on the subsequent mechanical properties. The volume fraction of added zirconia was also varied. The increased toughness over silicon nit

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Monaco, Carlo <1967&gt. "Zirconia in dentistry." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5956/1/TESI_MONACO_COMPLETA.pdf.

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The above factors emphasize the scope of this thesis for further investigations on zirconia, the improvement of all-ceramic zirconia restorations, and especially the interaction of zirconia and veneering and its influence on the performance of the whole restoration. The introduction, chapter 1, gave a literature overview on zirconia ceramics. In chapter 2, the objective of the study was to evaluate the effect of abrading before and after sintering using alumina-based abrasives on the surface of yttria-tetragonal zirconia polycrystals. Particular attention was paid to the amount of surf

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Monaco, Carlo <1967&gt. "Zirconia in dentistry." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5956/.

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RICCI, DOLORES R. "Otimizacao do processo de obtencao de zirconia via precipitacao do sulfato basico de zirconio." reponame:Repositório Institucional do IPEN, 1989. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10393.

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Made available in DSpace on 2014-10-09T12:38:11Z (GMT). No. of bitstreams: 0 Made available in DSpace on 2014-10-09T14:04:43Z (GMT). No. of bitstreams: 1 01779.pdf: 1867284 bytes, checksum: 561bc30f019f8009c1ab308bcee6e3ca (MD5) Dissertacao (Mestrado) IPEN/D Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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Leghuel, Hatim A. "Radiation Backscatter of Zirconia." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1377012297.

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Tye, Andrew. "The preparation and characterisation of magnesia-stabilised zirconia and alumina/magnesia-stabilised zirconia composites." Thesis, University of Leeds, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305440.

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Grohmann, Philipp Alfred Charles. "Effect of zirconia surface treatments on the shear strength of zirconia/veneering ceramic composites /." [S.l.] : [s.n.], 2008. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000279108.

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Saran, Mohinder. "High temperature strengthening of zirconia." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504522.

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Più fonti

Libri sul tema "Zirconia"

Arnold, Bożena. Zircon, Zirconium, Zirconia - Similar Names, Different Materials. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64269-6.

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R, Stevens. Zirconia and zirconia ceramics. 2nd ed. Magnesium Elektron Ltd, 1986.

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Minnis, Chelsey. Zirconia. Fence Books, 2001.

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E, Fletcher Andrew, and Mitchell Market Records, eds. Zirconia. 3rd ed. Elsevier Advanced Technology, 1993.

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M, Ondik Helen, McMurdie Howard F. 1905-, American Ceramic Society, and Phase Equilibria Diagrams Data Center (U.S.), eds. Phase diagrams for zirconium and zirconia systems. American Ceramic Society, 1998.

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Meriani, S., and C. Palmonari, eds. Zirconia’88. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1139-0.

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Zirconia, '88 (Conference) (Bologna Italy). Zirconia '88: Advances in zirconia science and technology. Elsevier Applied Science, 1989.

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R, Stevens. Zirconia and zirconia ceramics: Written for Magnesium Elektron. 2nd ed. Magnesium Elektron Ltd., 1986.

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Meriani, S. Zirconia'88: Advances in Zirconia Science and Technology. Springer Netherlands, 1989.

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Cain, Markys G. Zirconia toughened ceramics. typescript, 1990.

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Più fonti

Capitoli di libri sul tema "Zirconia"

Arnold, Bożena. "Zirconia: A Synthetic Gemstone." In Zircon, Zirconium, Zirconia - Similar Names, Different Materials. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64269-6_21.

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Graeve, Olivia A. "Zirconia." In Ceramic and Glass Materials. Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-73362-3_10.

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Nakajima, Yasushi. "Zirconia." In Encyclopedia of Polymeric Nanomaterials. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-36199-9_378-1.

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Nakajima, Yasushi. "Zirconia." In Encyclopedia of Polymeric Nanomaterials. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29648-2_378.

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Gooch, Jan W. "Zirconia." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13014.

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Arnold, Bożena. "Zirconium: A Hardly Known Metal." In Zircon, Zirconium, Zirconia - Similar Names, Different Materials. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64269-6_6.

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Arnold, Bożena. "The Constant Confusion: An Introduction." In Zircon, Zirconium, Zirconia - Similar Names, Different Materials. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64269-6_1.

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Arnold, Bożena. "The Crystal World of Zirconium Oxide." In Zircon, Zirconium, Zirconia - Similar Names, Different Materials. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64269-6_13.

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Arnold, Bożena. "Zirconium Oxide and the Lambda Sensor." In Zircon, Zirconium, Zirconia - Similar Names, Different Materials. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64269-6_19.

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Arnold, Bożena. "Zirconium Oxide in Technology." In Zircon, Zirconium, Zirconia - Similar Names, Different Materials. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-64269-6_17.

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Atti di convegni sul tema "Zirconia"

Hindman, D. L., H. L. Wishkoff, and D. J. Landini. "Corrosion of Ceramic Composite Heat Exchanger Materials in a Hazardous Waste Incinerator*." In CORROSION 1993. NACE International, 1993. https://doi.org/10.5006/c1993-93199.

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Abstract A ceramic composite based heat exchanger has been designed for use in high temperature, highly corrosive environments. A prototype unit is scheduled to be field tested in a hazardous waste incinerator. Prior to the field test, candidate composite materials were exposed to the incinerator flue gases for up to six months to determine their performance. Three of the composite material types tested were filament wound tubes containing alumina-zirconia fiber in an alumina matrix, a zirconia matrix, or an alumina matrix coated with zirconia. A fourth type consisted of particulate silicon ca

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Xu, Jinyang, Pengjie Gao, and Min Ji. "Recent developments in fabrication of dental zirconia ceramics." In International Conference on New Materials, Machinery, and Vehicle Engineering 2024, edited by Jinyang Xu and J. Paulo Davim. SPIE, 2024. http://dx.doi.org/10.1117/12.3054941.

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Suzuki, M., S. Sodeoka, and T. Inoue. "Study on Zircon-Based Ceramic Coating for High Temperature Oxidation Resistant Application." In ITSC2001, edited by Christopher C. Berndt, Khiam A. Khor, and Erich F. Lugscheider. ASM International, 2001. http://dx.doi.org/10.31399/asm.cp.itsc2001p0049.

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Abstract Zircon is widely used as a refractory material, because of its excellent mechanical and chemical properties. Several studies on plasma sprayed zircon were reported since 70's, and it is known that zircon dissociate into silica and zirconia during the plasma spray process. Authors have been studied on plasma sprayed zircon for a protective coating application, and successfully obtained very dense coating with excellent adhesive strength by optimizing the spray parameter. However, it was also revealed that the coating had poor stability above 1500K. In this study, the effects of two dif

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Sun, Guocheng, Shi Lin, Xu Wang, and Liutao Chen. "Study of Pre-Oxidization Law and Fretting Wear Resistance of CZ2 Alloy Cladding." In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-93804.

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Abstract In the core of pressurized water nuclear reactor, coolant flow-induced vibration of Grid to rod fretting (GTRF) is the dominant factor leading to fuel rod damage. pre-oxidization treatment of zirconium cladding forming a ceramic layer on its surface is the main way to reduce the GTRF wear. In this paper, the growth law of CZ2 alloy cladding pre-oxidization zirconia ceramic layer formed in air was studied. The micro-hardness and elastic modulus of CZ2 alloy cladding and zirconia ceramic layer were measured by in-situ nano-mechanical testing system., while the morphology of these pre-ox

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Suzuki, M., S. Sodeoka, and T. Inoue. "Zircon-Based Ceramics Composite Coating for Environmental Barrier Coating." In ITSC2007, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. ASM International, 2007. http://dx.doi.org/10.31399/asm.cp.itsc2007p0523.

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Abstract Studies on plasma spraying of zircon (ZrSiO4) have been carried out by the authors as one of the candidates for an environmental barrier coating (EBC) application, and had reported that substrate temperature is one of the most important factors to obtain crack-free and highly-adhesive coating. In this study, several amount of yttria were added to zircon powder, and the effect of the yttria addition on the structure and properties of the coatings were evaluated in order to improve the stability of the zircon coating structure at elevated temperature. The coatings obtained were composed

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Lima, R. S., U. Senturk, C. C. Berndt, and C. R. C. Lima. "Spraying Characteristics of Nanostructured Zirconia Particles." In ITSC 1999, edited by E. Lugscheider and P. A. Kammer. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 1999. http://dx.doi.org/10.31399/asm.cp.itsc1999p0190.

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Abstract In this paper, the processes as well as the first results regarding the economic efficiency and plasma fuel properties of nanostructured zirconium oxide powder particles are explained. The paper evaluates values for porosity, hardness, roughness, and crystallite size. In addition, both the morphology of the powder particles and the spatter are analyzed by SEM, and cross sections of the coatings are observed using optical microscopy. These results are compared to coatings made from a commercially available yttria stabilized zirconia powder. Paper includes a German-language abstract.

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Wang, Dazhi, Xiangqian Xiu, Chunlin Song, Weng Huimin, Wang Zheng, and Honggao Tang. "Structure of Zirconia Precursor." In Proceedings of the 7th Asian Conference. WORLD SCIENTIFIC, 2000. http://dx.doi.org/10.1142/9789812791979_0101.

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Stöver, D., G. Pracht, H. Lehmann, M. Dietrich, J. E. Döring, and R. Vaßen. "New Material Concepts for the Next Generation of Plasma-Sprayed Thermal Barrier Coatings." In ITSC2003, edited by Basil R. Marple and Christian Moreau. ASM International, 2003. http://dx.doi.org/10.31399/asm.cp.itsc2003p1455.

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Abstract For the application as a thermal barrier coating (TBC) the partially stabilized zirconia approaches some limits of performance, which hardly can be overcome in the near future. To further enhance the efficiency of gas turbines, higher temperature and a longer lifetime of the coating are needed for the next generation of TBC´s. This paper presents the development of new materials and concepts for application as TBC. Materials such as compositions with pyrochlore structure or doped zirconias are compared with new concepts like nanolayer between top- and bondcoat, metal-glass composites

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Khor, K. A., and Y. Li. "Novel ZrO2-Mullite Composites Produced by Plasma Spraying." In ITSC 1998, edited by Christian Coddet. ASM International, 1998. http://dx.doi.org/10.31399/asm.cp.itsc1998p1233.

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Abstract Zirconia can induce enhanced fracture toughness to a number of ceramics when introduced as a reinforcement either in the form of particulates, dispersed phase or whiskers because of its unique tetragonal-monoclinic transformation. This paper presents the preparation of ZrO2 reinforced mullite by plasma spraying a mixture of zircon and alumina. The dissociation of zircon into zirconia and silica in a plasma flame is well-known. Pre-mixed powders of zircon and alumina are injected into a dc plasma jet. The plasma sprayed particles are collected in distilled water and analyzed. The resul

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Toplan, N., F. Ustel, H. O. Toplan, and G. Erdogan. "Mullite-Zircon Thermal Barrier Coating Production by Plasma Spraying Process." In ITSC2008, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2008. http://dx.doi.org/10.31399/asm.cp.itsc2008p1001.

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Abstract Zircon (ZrSiO4) is a technologically important oxide ceramic material known for its high refractoriness and chemical stability. It shows excellent thermal shock resistance as a result of its very low thermal expansion coefficient and a low heat conductivity coefficient. Plasma spraying is a convenient method to produce large area coatings with high growth rates, necessary for many applications. ZrSiO4 is among the least expensive spraying materials for refractory applications. In this study, a single-step process was used to prepare mullite/zirconia ceramic composites by plasma sprayi

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Rapporti di organizzazioni sul tema "Zirconia"

Assabumrungrat, Suttichai, and Bunjerd Jongsomjit. Direct synthesis of isobutene from CO hydrogenation with zirconium dioxide catalysts. Chulalongkorn University, 2008. https://doi.org/10.58837/chula.res.2008.68.

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This report summarizes the second year research output of the project “Direct Synthesis of Isobutene from CO Hydrogenation with Zirconium dioxide Catalysts”. In the first year work, the catalytic performance on isosynthesis and characterization of different micron- and nanoscale zirconia catalysts were carried out and compared with those of ceria. In addition, the effect of temperature ramp during calcination of zirconia on characteristics of nanoscale zirconia catalysts and their catalytic performance for isosynthesis was investigated. In this second year work, the catalytic performance of zi

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Jansen, H. J. F. Theoretical studies of zirconia and defects in zirconia. Final report. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/132732.

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Traczinski, Adriana, Felipe Carvalho de Macêdo, Ivete Aparecida de Mattias Sartori, and José Mauro Granjeiro. Advantages and limitations related to the rehabilitation of edentulous jaw with implant supported prostheses made of monolithic zirconia: systematic review. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.1.0111.

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Review question / Objective: P: edentulous maxillary arch; I: Full arch rehabilitation with monolithic zirconia or veneered prosthesis retained by implants; C: none; O: Biomechanical complications (framework fracture, chipping, complications, advantages, limitations); S: RCT, nor randomized clinical trials. Condition being studied: Biomechanical complications resulting from the oral rehabilitation of edentulous maxillary arch through the use of implant-supported full arc prostheses made of monolithic zirconia. Eligibility criteria: Total edentulous maxillary arch patients; rehabilitated with i

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Assabumrungrat, Suttichai, and Bunjerd Jongsomjit. Direct synthesis of Isobutene from CO Hydrogenation with ZrO [subscript 2] catalysts. Chulalongkorn University, 2007. https://doi.org/10.58837/chula.res.2007.76.

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The focus of this research was to investigate the catalytic performances of various zirconia catalysts on isosynthesis. The characteristics of the catalysts were determined by means of various techniques including BET surface area, XRD, NH[[subscript 3][superscript -]] and CO[[subscript 2][superscript -]] TPD, TEM and SEM/EDX. In the first portion, different micron- and nanoscale zirconia catalysts were employed for the isosynthesis and compared with those of ceria. It was found that the nanoscale catalysts showed higher activity and selectivity of isobutene in hydrocarbons than the micronscal

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Raman, S. V., R. Bopp, T. A. Batcheller, and Q. Yan. Zirconia solubility in boroaluminosilicate glass. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/188530.

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Shetty, D. Alumina reinforced tetragonal zirconia (TZP) composites. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6903642.

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Chui, Chi On. Zirconia-germanium interface photoemission spectroscopy using synchrotron radiation. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/839877.

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Worrell, W. L. Zirconia-based electrodes for solid oxide fuel cells. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/7022625.

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Evans, N. D., P. H. Imamura, M. L. Mecartney, and J. Bentley. Grain boundary studies of doped yttria-stabilized zirconia. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/654194.

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Boldt, Christopher. Directional solidification of the alumina-zirconia ceramic eutectic system. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10190639.

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