Investigations of phase composition and grain size distribution in Pr doped ZrO2

Agnieszka Opalińska 1,  Roman Pielaszek 1,  Cristina Leonelli 2,  Witold Łojkowski 1,  Tomasz Wejrzanowski 3,  Hubert Matysiak 3

1. Polish Academy of Sciences, Institute of High Pressure Physics (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland
2. University of Modena and Reggio Emilia, Via Campi 183, Modena 41100, Italy
3. Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland

Abstract

A high pressure microwave reactor, i.e., a reactor where microwave energy is used to heat the fluids inside the high pressure cell was used to study the hydrothermal synthesis of zirconia doped with praseodymium (Pr content 1 mol%) in temperature range was from 210 to 305oC. Nanopowders with average grain size in the range of 10 nm were obtained.

A mixture of nanoparticles with tetragonal and monoclinic phase structure was obtained. A new method to determine the grain size distribution, which is based on analysis of the fine structure of the X-ray diffraction line profiles, was applied. It was found that the content of the monoclinic phase decreased with increasing synthesis pressure up to 8 MPa due to dissolution or transformation of grains of smaller diameter than about 12 nm.

Keywords: Hydrothermal synthesis; Microwave; High Pressure; Zirconia; Praseodymium; Grain Size Distribution

Related papers
  1. Hydrothermal Synthesis of ZnAl2O4 Spinel
  2. Modelling of plastic deformation of nano-polycrystalline materials
  3. Localization of rare-earth dopants in the lattice of nanocrystalline ZrO2 - EXAFS study
  4. Molecular statics simulation of nanoindentation on nanocrystalline copper
  5. Advanced nanoporous yttria-stabilized zirconia ceramics for luminescent oxygen sensors
  6. Excitation transfer in zirconia nanocrystals and ceramics
  7. Eu Luminescence in zirconia nanocrystals
  8. ZnO ceramic sintering and luminescence properties
  9. Stochastic Approach To The Changes In The Mechanical Properties Of Nano-Crystalline Materials Induced By Grain Growth
  10. Surface effect on atomic ordering in nano-layered L10 AB binaries: multiscale Monte Carlo Simulation
  11. X-ray and electron microscopy techniques studies on nanocrystalline MgO powder materials prepared by sol-gel method
  12. Oferta zaawansowanych materiałów w perspektywie 5 - 20 lat
  13. Strategia rozwoju badań nanoproszków
  14. Statystyczna analiza deklarowanych kierunków rozwoju nowoczesnych materiałów w projekcie FOREMAT w powiązaniu z tematami polskich prac doktorskich, habilitacyjnych i grantów KBN
  15. Error bars in powder diffraction
  16. Polacy odkryli drugą Ziemię
  17. Synthesis of doped ZnO nanopowders in microwave hydrothermal reactors
  18. Characterization of nanopowders
  19. Synthesis of Al doped ZnO nanopowders and their enhanced luminescence
  20. Synthesis of nanopowders in supercritical water in a continuous flow reactor
  21. A summary of results obtained in Working Group 002 "Synthesis and Processing of Nanopowders"
  22. Summary of activities of Working Group D30/003 "Synthesis and Processing of Nanopowders"
  23. Doped zirconia nanopowders made in microwave – pressure reactor
  24. Combining microwave and pressure techniques for hydrothermal synthesis of ZnO and ZrO2 nanopowders doped with a range of metal ions
  25. Luminescence properties of zinc oxide nanopowders doped with Al ions obtained by the hydrothermal and vapour condensation methods.
  26. The effect of grain size distribution on mechanical properties of nanometals
  27. Surface chemistry of Pr-doped nanocrystalline zirconia
  28. Mechanical property of nano-TiO2 dispersed Al65Cu20Ti15 amorphous/nanocrystalline matrix bulk composite prepared by mechanical alloying and high pressure sintering
  29. Structure of nanocrystalline powders of MgO prepared by sol-gel method
  30. Microwave technique applied on the hydrothermal synthesis and sintering of calcia stabilized zirconia nanoparticles
  31. Luminescence properties of cerium doped Y3Al5O12 nanopowders and nanoceramic
  32. Yttrium-Aluminum Garnet Synthesized in the Medium of Supercritical Fluids
  33. Advanced nanostructural zirconia ceramics for optical oxygen sensors
  34. Study of undoped and doped zirconia nanocrystals luminescence
  35. Doping of ZnO nanopowders with Mn, Ni and Cr In an ultrasound and microwave driver hydrothermal reaction
  36. Statistical model of grain growth in polycrystalline nanomaterials
  37. Localization of rare-earth dopants in the lattice of nanocrystalline ZrO2 - EXAFS study
  38. Zirconia-based nanomaterials for oxygen sensor - generation, characterisation and optical properties
  39. Production of doped and non doped ceramics nanoparticles for optical applications
  40. Synthesis, sintering and properties of doped nanocrystalline powders of zirconia, zinc oxide and yttrium aluminum garnet (YAG)
  41. Characterization of nanocrystalline ZrO2 doped with Rare-Earth elements synthesized via High Pressure Hydrothermal Method
  42. Particle Size Distribution of ZrO2:Pr3+- Influences of pH, High Power Ultrasound, Surfactant and Dopant Quantity
  43. Time-Resolved Luminescence Characteristics of Doped YAG and YAP Nanopowders
  44. Structure studies on nanocrystalline MgO powders prepared by sol-gel method dried under different conditions
  45. Cathodoluminescence of Al doped ZnO nanopowders
  46. Morphology of Al doped Zinc Oxide Obtained using Hydrothermal and Vapour Condensation Methods
  47. Luminescence and structural properties of rare-earth doped YAG nanoceramics
  48. Optimization of conditions of preparation of YAG nanopowders for sintering of translucent ceramics
  49. The influence of ZrO2 containing 10% Eu 3+ on the polyurethane hard domain structure of nano-composites with luminescence properties
  50. Growth and properties of ytterbium doped KY(WO4)2 nanocomposites
  51. Microwave asssited hydrothermal synthesis as a rapid route toward manganites preparation
  52. Investigations on the utilization of nano zinc oxides synthesized by hydrothermal method in rubber compounds
  53. Grain Boundary Migration in Nanocrystalline Iron
  54. A method for procedural standardisation for preparing and processing nanopowders using microwaves
  55. Conventional thermal process versus microwave hydrothermal accelerated synthesis route of lanthanum manganites perovskites used in methane combustion
  56. Ultrasonic and Microwave Assisted Synthesis of Nanometric Particles
  57. Doping of ZnO nanopowders with Mn and Cr in an ultrasound and microwave driven hydrothermal reaction
  58. Nasze wyniki, zdania i sposoby ich realizacji
  59. Modelling of Grain Growth in nano-polycrystalline materials
  60. Morphology of Al doped zinc oxide obtained by the vapour condensation method
  61. The comparison of the properties of YAG obtained by coprecipitation and SCR method
  62. Synthesis of nanopowders at elevated pressure and their characterisation - summary of work of the WG-002
  63. Accuracy of XRD size measurements of nanocrystals
  64. Morphology of Al-Doped Zinc Oxide Obtained by the Vapour Condensation Methods
  65. SWOT analysis of various reactors used for synthesis of nanopwoders in our Working Group
  66. Preliminary research on zirconia based optical oxygen sensor
  67. Preparation and electrical properties of the BaTiO3 nanoceramics
  68. Current trends in the development of metallic nanomaterials: results of a study carried out within the EC project Nanoroad SME
  69. Microstructural Evolution in Mechanical Alloying and Hot Pressing of Aluminium and 316 Stainless Steel Powder Blend
  70. Time-resolved luminescence of nanostructured ZnO
  71. Prediction of degree of localisation of misfit dislocation cores in intercrystalline interfaces based on interfacial adhesion
  72. Kinetic and thermodynamic factors leading to dissolution of cementite in pearlitic steel subjected to severe plastic deformation under pressure
  73. Yttria stabilized zirconia nanocrystals luminescence
  74. Application of XRD diffraction methods for determination of grain size distribution in nanoparticles
  75. Optical investigations of RE-doped YAG nanoceramics
  76. Fabrication and micro-structure characterization of Al2O3/Ni-P composites with interpenetrating phases
  77. Electrical properties of nanocrystalline ZrO2 at high-pressure
  78. High-pressure Induced Structural Decomposition of RE-doped YAG Nanoceramics
  79. Synthesis of Al-doped ZnO nanomaterials with controlled luminescence properties
  80. Combination of ECAP and Hydrostatic Extrusion for ultra-fine grain (UFG) microstructure generation in 99.98% nickel.
  81. Mechanical properties and deformation behaviour of ultra-fine grained nickel.
  82. Grain Size and Grain Size Distribution of Nanocrystalline Pr-doped Zirconia Powders Obtained in High Pressure Microwave Reactor
  83. Influence of synthesis conditions on the particles size and the morphology of zinc oxide nanopowders
  84. Measuring the Grain Size Distribution of Pr-doped Zirconia Nanopowders obtained by Microwave Driven Hydrothermal Synthesis
  85. Excellent mechanical properties of UFG metals and alloys, subjected to combination of severe plastic deformation methods.
  86. An FT-IR Spectroscopic Investigation of Hydroxide Groups in Nano-Crystals of ZrO2.
  87. Development of microstructure and mechanical properties in nickel deformed by hydrostatic extrusion
  88. Structural and luminescence properties of yttrium-aluminum garnet (YAG) nanoceramics
  89. Biocompatibility of thin films based on hydrothermal synthesized HAp
  90. The influence of twin bands density on microstructure of 316LVM austenitic stainless steel subjected to transverse rolling
  91. Hybrid HAp- maleic anhydride copolymer nanocomposites obtained by in situ functionalisation
  92. Fabrication and electrical properties of Eu3+:BaTiO3 nanoceramics for SOFC
  93. Annealing temperature effect on residual stresses in 316L steel subjected to HPT process
  94. Luminescence of ZrO2 nanocrystals
  95. Molecular impurities in the luminescent ZnO nanocrystals
  96. Modelling of the Influence of the Grain Size Distribution on the Grain Growth in Nanocrystals
  97. X-Ray investigations of the natural and artificial White Etching Layer
  98. Diffusion and diffusion induced defects in GaN
  99. Excellent Mechanical Properties of Nickel Processed by High Pressure Techniques
  100. Microwave driven hydrothermal synthesis of iron oxide - the effect of process parameter on the properties of the nanopowders
  101. Relaxation processes in ZrO2 at high pressures
  102. Luminescence of ZrO2 and ZnO nanocrystals
  103. Zinc oxide nanopowders obtained by the microwave-hydrothermal route
  104. Microwave driven hydrothermal synthesis of Pr-doped zirconia nanopowders
  105. New hydroxyapatite based nanomaterials for potential use in medical fields
  106. Correlation between high-pressure ZrO2 electrical properties and crystallite size
  107. Precise determination of full Grain Size Distribution from diffraction peak profile as a result of kinematical theory of diffraction for polidispersive nanomaterials
  108. Pressure Effect on Grain Boundary Diffusion in Al Bicrystals
  109. Microstructure of Surface Layers of Raiways After Heavy Exploatation
  110. Normal Grain Growth in 2-d Strips of Polycrystalline Aluminium Under High Pressure
  111. Reaction Diffusion in Metallic Systems under High Pressure
  112. High Pressure Effect on Grain Boundary Wetting in Aluminium Bicrystals
  113. X-Ray Characterization of Nanostructured Materials
  114. Generetion and Relaxation of Strain in SiC and GaN under Extreme Pressure
  115. Pressure Effect on Interface Energy, Diffusion and Reactions
  116. Influence of high pressure on the polytype structure of nanocrystalline GaN
  117. Transformation of fractal microstructure of nanocrystalline SiC and diamond in high pressures - Small Angle Scattering Study
  118. Microwave-Hydrothermal Synthesis of Nanostructured Pr-Doped Zirconia Powders
  119. The Strain Induced Cementite Dissolution in Carbon Steels-Experimental Facts and Theoretical Approach
  120. Effect of SPD Grain Refinement and Peculiarity of Structure and Mechanical Properties of UFG Ni
  121. Luminescense of Nanosize ZrO2
  122. Structure, Morphology and Luminescence Properties of Pr-doped Nanocrystalline ZrO2 Obtained by Hydrothermal Method
  123. Nanostructure Formation on the Surface of Railway Tracks and Wheelsets
  124. Hydrothermal Synthesis of Zinc Oxide Nanopowders with Microwaves Applications
  125. Microwave Driven Hydrothermal Synthesis of Iron Oxide Nanopowders
  126. Indentation Technique for Determination if Mechanical Behavior of Nanomaterials (Bulk and Coatings)

Presentation: Poster at COST action D32 Mid term evaluation meeting, by Witold Łojkowski
See On-line Journal of COST action D32 Mid term evaluation meeting

Submitted: 2006-03-21 23:35
Revised:   2006-05-11 19:30
Google
 
Web science24.com
© 1998-2008 pielaszek research, all rights reserved Powered by the Conference Engine