Corpus ID: 131770870

Synthesis and Characterization of Sol-gel Deposited Aluminum Oxide at Low Temperatures

  title={Synthesis and Characterization of Sol-gel Deposited Aluminum Oxide at Low Temperatures},
  author={Farzana. Majid and Saira Riaz and Talha Ijaz and M. Farooq and Shahzad Naseem},
Al2O3 is the most versatile material having applications in electronic devices and in lasers. It is stable at high temperatures and chemically inert. Sol-gel method is used to synthesize Aluminum oxide nanoparticles and thin films. Thin films are prepared on glass substrates using spin coater. Surface morphologies are observed by using Hitachi S-3400N SEM. Grain size in the range of ~60-90 nm is observed after centrifugation. Grain size is observed to be strongly dependent on the choice of… Expand

Figures and Tables from this paper


Lower Temperature Formation Of Alumina Thin Films Through Sol–Gel Route
Bayerite sol is spun onto single crystal Si substrate, after synthesis and optimization, to obtain films of thickness ~ 0.2 μm. The deposited films are room temperature dried and then heated up to aExpand
Optical properties of aluminium oxide thin films prepared at room temperature by off-plane filtered cathodic vacuum arc system
An off-plane filtered cathodic vacuum arc (FCVA) system has been developed to deposit large area (up to 8 inch) optical coatings with good uniformity controlled by scanning magnetic field system.Expand
Studies on white anodizing on aluminum alloy for space applications
A process of white anodizing in an electrolyte system consisting of sulfuric acid, lactic acid, glycerol and sodium molybdate was studied for space applications. The influence of anodic filmExpand
Degradation of the optical properties of ZnO-based thermal control coatings in simulated space environment
Optical absorption and photoluminescence spectroscopy have been used to investigate the physical changes induced by proton and electron irradiation in selected thermal control coatings. This studyExpand
Chemical dissolution resistance of anodic oxide layers formed on aluminum
Abstract Chemically resistant anodic oxide layers were formed on pure aluminum substrates in oxalic acid-sulphuric acid bath. Acid dissolution tests of the obtained anodic layers were achieved inExpand
Effects of vacuum and vacuum-ultraviolet radiation on sulfuric acid anodized aluminum oxide coatings
Porous aluminum oxide coatings processed by sulfuric acid anodizing (SAA) of aluminum have been of interest in recent years for use as thermal control surfaces in space applications and see use inExpand
White Anodic Coatings on Aluminum Alloy with Low Ratio of Solar Absorptance to Infrared Emittance
White anodic coatings are gained by growth in situ on the aluminum alloy. The coatings possess stable optical properties, excellent adhesive power, low cost, stability in the space environment, andExpand
Studies on anodic oxide coating with low absorptance and high emittance on aluminum alloy 2024
Abstract Anodization of AA 2024 in sulfuric acid bath containing glycerol, lactic acid and ammonium metavenadate has been studied to develop white anodic oxide coating. Investigation on the influenceExpand
Study of degradation mechanisms of black anodic films in simulated space environment
Black anodic films are used on aluminium alloys in space applications to provide specific thermo-optical properties to the surface. During the process, thermal and/or residual stresses can lead toExpand
Study of agglomeration of alumina nanoparticles by atomic force microscopy (AFM) and photon correlation spectroscopy (PCS)
Abstract Alumina (Al 2 O 3 ) nanopowders dispersed by ultrasonic treatment in solvents of different hydrophobicity are simultaneously investigated using photon correlation spectroscopy (PCS) and,Expand