Ceramic Coatings Deposited from Aqueous Solutions

Hidero Unuma

doi:10.4028/www.scientific.net/SSP.124-126.527

Paper Titles

Embodiment and Luminescence Properties of Sr₃SiO₅:Eu(Yellow-Orange Phosphor) by Co-Doping Lanthanide
p.511

Fabrication and Characterization of SiO₂ Based Waveguide Co-Doped with Si-Nanocrystal and Er³⁺
p.515

Wafer Level Bonding for LED Packaging Using Six Sigma Methodology
p.519

Patterning of the Self-Assembled Monolayer Using the Zero Residual Nano-Imprint Lithography
p.523

Ceramic Coatings Deposited from Aqueous Solutions
p.527

OTS-Templated Cobalt Deposition Using Co₂(CO)₈ Precursor
p.531

Surface Characteristic of Ni-Based Amorphous Alloy Membrane for Hydrogen Permeation
p.535

Growth Kinetics and Formation of Uniform Self-Assembled InAs/GaAs Quantum Dots at
p.539

Numerical Analysis of Self-Organizing Interconnection Process by 3 Dimensional Flow Dynamics
p.543

HomeSolid State PhenomenaSolid State Phenomena Vols. 124-126Ceramic Coatings Deposited from Aqueous Solutions

Ceramic Coatings Deposited from Aqueous Solutions

Abstract:

This paper reviews novel techniques developed in our laboratory to deposit ceramic thin films from aqueous solutions. All the techniques are based on the heterogeneous nucleation and growth phenomenon; ceramic precipitates are prone to be formed preferentially on substrate/solution interfaces when the rate of the formation of the precipitates is appropriately controlled. In “oxidative soak coating” method, metal ions with a lower valence state are oxidized in homogeneous solutions to those with a higher valence state; thereby coatings of SnO2, MnO2, CeO2, Co3O4 and Fe3O4 have been deposited. In “ligand decomposition” method, ligands of an indium peroxo- complex are decomposed to promote spontaneous hydrolysis of the indium ion; thereby In2O3 coating has been deposited. In “enzyme-assisted precipitation” method, precipitant of metal ions is supplied by urease immobilized on a substrate to promote local deposition of ceramics on the substrate, by which hydroxyapatite coating has been rapidly deposited. The control of the rate of the precipitation reactions is the most important parameter. Some properties of the resultant coatings are also presented.