Nanopowder dispersion and spray-drying process: the case of Cr2O3
-
Audrey Cellard
, Rachid Zenati , Vincent Garnier , Gilbert Fantozzi und Guy Baret
Abstract
The work reported in this paper was performed in order to develop and to optimize the dispersion of Cr2O3 nanopowders by a ball-milling method and to produce spherical micrometer-sized granules by spray-drying. The targeted application for such granules is the development of wear resistant nanostructured Cr2O3 coatings by plasma spraying. Cr2O3 nanopowders were dispersed in deionized water. The suitable dispersant (DarvanC) was determined by zeta potential measurements and the dispersant quantity was optimized by rheological tests. The influence of milling time, diameter of milling balls and weight ratio of milling balls to powder was studied by granulometric measurements. A well-dispersed and stable suspension was then obtained and spray-dried. Dense and spherical micrometer-sized granules, with a monodispersed distribution centered about 50μm, have been achieved and Cr2O3 plasma-sprayed coatings have been realized.
References
[1] X.Liu, B.Zhang, Z.Deng: Intern. J. Machine Tools & Manufacture42 (2002) 1665.10.1016/S0890-6955(02)00115-3Suche in Google Scholar
[2] C.S.Richard, J.Lu, G.Beranger, F.Decomps: J. Thermal Spray Techn.4 (1995) 342.10.1007/BF02648633Suche in Google Scholar
[3] Y.Zeng, S.W.Lee, C.X.Ding: Mater. Lett.57 (2002) 495.10.1016/S0167-577X(02)00818-2Suche in Google Scholar
[4] Y.Wang, S.Jiang, M.Wang, S.Wang, T.D.Xiao, P.R.Strutt: Wear237 (2000) 176.10.1016/S0043-1648(99)00323-3Suche in Google Scholar
[5] X.Q.Cao, R.Vassen, S.Schwartz, W.Jungen, F.Tietz, D.Stoever: J. Europ. Ceram. Soc.20 (2000) 2433.10.1016/S0955-2219(00)00112-6Suche in Google Scholar
[6] T.Valente, C.Bartuli, M.Tului: Surface and Coatings Techn.155 (2002) 260.10.1016/S0257-8972(02)00058-0Suche in Google Scholar
[7] T.Sato, R.Ruch: Stabilization of colloïdal dispersions by polymer adsorption – Volume 9, Marcel Dekker, Surfactant Science Series, New York (1980).Suche in Google Scholar
[8] B.S.Mann, B.Prakash: Wear240 (2000) 223.10.1016/S0043-1648(00)00390-2Suche in Google Scholar
[9] P.Pascal: Nouveau traité de chimie minérale-Tome XIV, Masson, Paris (1959).Suche in Google Scholar
[10] S.Vallar, D.Houivet, J.El Fallah, D.Kervadec, J.M.Haussonne: J. Europ. Ceram. Soc.19 (1999) 1017.10.1016/S0955-2219(98)00365-3Suche in Google Scholar
© 2006, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Editorial
- Basic
- Three-dimensional printing of TiAl3/Al2O3 composites
- Microemulsion mediated synthesis of nanocrystalline BaTiO3: possibilities, potential and perspectives
- Solid-State 17O NMR studies on Yttria-stabilized zirconia
- Twinning in ultrathin silicon nanowires
- Re-optimization of the Mg–Sb system under topological constraints
- Mg-rich phase equilibria of Mg–Mn–Zn alloys analyzed by computational thermochemistry
- The In–Pt–Sb phase diagram
- Thermodynamic evaluation of the Al–Cr–C system
- Thermodynamic description of the Ni–Si–Ti ternary system
- Enthalpies of formation measurements and thermodynamic description of the Ag–Cu–Zn system
- Thermodynamic assessment of the Mn–Cr–O system for solid oxide fuel cell (SOFC) materials
- Subsolidus phase equilibria in the CeO2−x–SiO2–ZrO2 system: An experimental study
- Generalized Maugis–Dugdale model of an elastic cylinder in non-slipping adhesive contact with a stretched substrate
- Implications of linear relationships between local and macroscopic flow stresses in the composite model
- Applied
- Gas-phase surface alloying under “kinetic control”: A novel approach to improving the surface properties of titanium alloys
- Thin film formation by oriented attachment of polymer-capped nanocrystalline ZnO
- The sintering mechanism and microstructure evolution in SiC–AlN ceramics studiedby EFTEM
- Thermal evolution of free volumes and of crystallization in amorphous Si–B–C–N ceramics
- High-temperature deformation behavior of nanocrystalline precursor-derived Si–B–C–N ceramics in controlled atmosphere
- Nanopowder dispersion and spray-drying process: the case of Cr2O3
- Electroless deposition of brushite (CaHPO4 · 2H2O) crystals on Ti–6Al–4V at room temperature
- The role of chemisorbed anions in the aqueous processing of AlN powder
- The influence of porosity on the electrical properties of liquid-phase sintered silicon carbide
- Development of high-temperature thermoelectric materials based on SrTiO3-layered perovskites
- The influence of the preparation method on the microstructure and properties of Al2O3/TiN nanocomposites
- Infrared properties of sintered α-MnSe
- Quasi-equilibrium sintering of particle clusters containing Bernal holes
- Design of metal ceramic composites
- Notifications
- DGM News
Artikel in diesem Heft
- Contents
- Contents
- Editorial
- Editorial
- Basic
- Three-dimensional printing of TiAl3/Al2O3 composites
- Microemulsion mediated synthesis of nanocrystalline BaTiO3: possibilities, potential and perspectives
- Solid-State 17O NMR studies on Yttria-stabilized zirconia
- Twinning in ultrathin silicon nanowires
- Re-optimization of the Mg–Sb system under topological constraints
- Mg-rich phase equilibria of Mg–Mn–Zn alloys analyzed by computational thermochemistry
- The In–Pt–Sb phase diagram
- Thermodynamic evaluation of the Al–Cr–C system
- Thermodynamic description of the Ni–Si–Ti ternary system
- Enthalpies of formation measurements and thermodynamic description of the Ag–Cu–Zn system
- Thermodynamic assessment of the Mn–Cr–O system for solid oxide fuel cell (SOFC) materials
- Subsolidus phase equilibria in the CeO2−x–SiO2–ZrO2 system: An experimental study
- Generalized Maugis–Dugdale model of an elastic cylinder in non-slipping adhesive contact with a stretched substrate
- Implications of linear relationships between local and macroscopic flow stresses in the composite model
- Applied
- Gas-phase surface alloying under “kinetic control”: A novel approach to improving the surface properties of titanium alloys
- Thin film formation by oriented attachment of polymer-capped nanocrystalline ZnO
- The sintering mechanism and microstructure evolution in SiC–AlN ceramics studiedby EFTEM
- Thermal evolution of free volumes and of crystallization in amorphous Si–B–C–N ceramics
- High-temperature deformation behavior of nanocrystalline precursor-derived Si–B–C–N ceramics in controlled atmosphere
- Nanopowder dispersion and spray-drying process: the case of Cr2O3
- Electroless deposition of brushite (CaHPO4 · 2H2O) crystals on Ti–6Al–4V at room temperature
- The role of chemisorbed anions in the aqueous processing of AlN powder
- The influence of porosity on the electrical properties of liquid-phase sintered silicon carbide
- Development of high-temperature thermoelectric materials based on SrTiO3-layered perovskites
- The influence of the preparation method on the microstructure and properties of Al2O3/TiN nanocomposites
- Infrared properties of sintered α-MnSe
- Quasi-equilibrium sintering of particle clusters containing Bernal holes
- Design of metal ceramic composites
- Notifications
- DGM News