Silicon carbide is an important material for industrial applications. The possible mechanisms are discussed and it is suggested that the interface mixing along with the coating densification effect are responsible for the improvement of the corrosion resistance. It was also found, that the corrosion resistance of the stainless steel is considerably improved when the coatings are deposited by DIM regardless of the deposition temperature. The characterisation shows, that for all the deposition temperatures the DIM-treatment promotes the crystallisation of the β-SiC phase. Transmission Electron Microscopy (TEM) observations were also performed for the determination of the microstructural state of the samples. The chemical composition of the coatings was determined by Rutherford Backscattering (RBS) using 1.8 MeV α-particles and by Nuclear Reaction Analysis (NRA). The growing films could be continuously bombarded with a 160 keV Ar+ ion beam and the role of this Dynamic Ion Mixing (DIM) on both the structure and corrosion resistance was investigated. SiC-coatings of various thicknesses (100–800 nm) were prepared at room temperature (RT) or at temperatures up to 750☌ by ion beam sputtering of a SiC-target. The influence of SiC-coatings on the corrosion properties of AISI 321 austenitic stainless steel (Fe/Cr18/Ni8/Ti) in 1N H2SO4 was studied. These results were with backscattering-electron images. EDX analysis suggests the present of three phases in the as deposited material: SiC, C and Si. The vicker hardness of the films is around ~2000 Hv. Secondary-electron images of SiC thin films a homogeneous film, very well conformed with a thick of ~0,16 μm. The Raman spectroscopy results are in accord with the x-ray results. The diffraction pattern of the deposited films is in agreement with the pattern of SiC (politipo 6H). The thin films were characterized using x-ray diffraction, Scanning Electron Microscopy (SEM), Energy Disperse X-ray (EDX) and vicker micro hardness. The ablation of the target material is carry out by an excimer laser with a wave length of 248 nm, 54 mJ/pulse and frequency of pulse repetition between 0 and 40 Hz with pulse width of 25 ns. The purpose of this work was the enhancement of the surface properties of stainless steel AISI 316L. We used Pulsed Laser Ablation (PLA) to deposit a thin film of SiC on the stainless steel surface. The enhancement of the surface properties is an area of constant study and interest. These properties are mainly due to the covalent bonds between Si and C atoms and to the tetrahedral coordination between them. Silicon carbide has a height strength, extremes hardness, and excellent wear resistance but also has very good resistance to oxidation and corrosion, and height thermal stability.
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