Field Emission Scanning Electron Microscope (FE-SEM)

Field Emission Scanning Electron Microscope (FE-SEM)

Pulsed Laser deposition, Sputter Coater, Thermal evaporation
Optical microscopes have a maximum magnification of 2000 times the magnification that is often not enough. To see particles that are smaller than the wavelength of light, we need to have very small particles so that they can be traced back to the target and visualized very small particles. The best particle for this purpose is electron. Electron is a charged and fundamental particle that can improve the magnification up to a million times. Scanning electron microscopy is an efficient and non-destructive technique that provides detailed information on the morphology, composition and structure of the studied materials. The first scanning electron microscope was invented in 1942. It was shown at that time that Secondary Electrons (SE) produced topographic contrast using the collector positive bias rather than the sample. After that,…
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Pulsed DC Magnetron Sputtering

Pulsed DC Magnetron Sputtering

Carbon Coater, Pulsed Laser deposition, Sputter Coater, Thermal evaporation
In the DC sputtering process by accelerating positive ions towards the target material (which is in negative potential) and colliding with its surface, due to the lack of electrical conductivity of the surface to move the charge, the positive charge accumulates on the surface of the target material. Due to this phenomenon, the tendency of the positive ions to move towards the target material is reduced and the sputtering process does not function properly. In the DC sputtering process of the dielectric material, the inner wall of the vacuum chamber is also coated with non-conductive material and traps the electric charge. This phenomenon, called the disappearing anode, causes the electrical charges from inclined toward this nonconductive layer. Due to this phenomenon, mini and macro arcs are created during the deposition…
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Effect of bias on structure mechanical properties and corrosion resistance…

Effect of bias on structure mechanical properties and corrosion resistance…

Sputter Coater
Over the past few decades, technological advances have made it possible to deposition of the thin films under vacuum which referred to as "Hard Coatings". These coatings have different applications due to their special structural and physical properties as protective coatings. Hard coatings consist of nitrides, carbides and borides of intermediate metals such as titanium or carbon coatings such as diamonds. These coatings have many applications in improving tools (such as cutting and forming machines) and machine parts like valves. Properties of a thin film of hard coatings can be classified as follows: Structural characteristics such as thickness, crystallography, chemical composition, surface morphology and roughness.Physical and chemical characteristics such as density, electrical properties, magnetic properties, thermal, optical, oxidizability and corrosion.Mechanical properties such as hardness, adhesion, mechanical stress and friction. The…
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10th year of Vacuum Expo in  UK

10th year of Vacuum Expo in UK

Pulsed Laser deposition
If you are interested in the vacuum field, do not miss the vacuum exhibition scheduled for 9&10 October 2019 in Ricoh Arena Coventry UK. The demonstration of industrial and scientific applications of vacuum technology in the field of coating, analytical sciences, R&D, solar cells, metallurgy, pharmaceuticals, food and packaging, space technology tools and many others are facilities provided at the exhibition for the interested in the vacuum field. See the bellow link for details:https://www.vacuum-expo.com/ https://vaccoat.com/2019/06/16/vaccoat-advertisement-at-labmate-mmc-2019-stand-604/ https://vaccoat.com/2019/06/17/why-should-an-electron-microscope-sample-be-prepared/ https://vaccoat.com/2019/06/18/selection-of-suitable-material-for-preparing-an-electron-microscope-sample/
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