Thin-film coatings based on cobalt oxides are obtained. For depositing cubic spinel Co3O4 and CoO films the sol-gel dipcoating technique was used. The as-deposited films were subjected to different thermal treatments in air and in reducing atmosphere (H2/N2), respectively. Optical absorption spectroscopy, X-ray diffraction and atomic force microscopy (AFM) were used to characterize the samples. The Swanepoel method was employed for the study of the

Structural and optical analysis of bismuth oxide thin films was studied. The vacuum thermal evaporation was used to prepare bismuth films onto glass substrates maintained at different temperatures. Subsequently, their thermal oxidation in air was performed for 1 and 2 hours time, respectively. The optical measurements consisted in recording the transmission and reflection spectra of the films at an UV/VIS Spectrometer. The structural characteristics

Alumina protective coatings were made on steel samples by pulsed laser deposition. Improvement of the thermal shock resistance of the steel is the main purpose of such a steel coating. The adhesion of the aluminum oxide thin layer on the steel base was increased by a whole new technique. Thus, microdimensional holes were done in the coating by a pulsed Nd:YAG laser. The characteristics of the laser and the geometry of the experiment were analyzed

In order to perform a continuous monitoring of the humidity of coke inside furnace, the neutron moisture gauge-NMG- is recommended. A good calibration made for the NMG leads to an increased its efficiency. We study the influence of the coke’s granulation on the NMG results. Also, a fast calibration method for NMG is proposed. Using the results of this research, the costs of the radioprotection are strongly diminished, without affecting the accuracy

The influence of a thermal treatment for 30 min from T = 300 K to T = 473 K, on the structural, electrical and optical properties of antimony trisulfide (Sb2S3) thin films has been investigated. The thin films deposited on a glass substrate by thermal vacuum evaporation at a substrate temperature TS = 300 K have amorphous structure, but after annealing they change to a polycrystalline structure, while those deposited at TS = 498 K have polycrystalline