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In this study, the AlTiCrN coatings with different Cr contents were deposited from AlTi and Cr targets using a hybrid coating process that combines high power impulse magnetron sputtering with DC magnetron sputtering. The microstructure and mechanical properties of the AlTiCrN coatings were investigated using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, and...
The evacuated tube provides a vacuum condition so that the high temperature superconducting (HTS) Maglev could run at an ultrahigh-speed. While inside the tube, the low-pressure environment could reduce air friction effectively, which is considered to be the main resistance to the Maglev. However, low-pressure would affect the evaporation state of liquid nitrogen (LN2), which is used as the coolant...
Titanium doped hydrogenated amorphous silicon (a-Si:Ti(H)) with different gas ratio (rH = H2/Ar) were prepared by rf co-sputtering in mixture of hydrogen and argon, with fixed Ti content. The optical, structural and optoelectronic properties of the prepared a-Si:Ti(H) were investigated systematically by Spectroscopic Ellipsometry (SE), photo/dark conductivity and Fourier Transform Infrared (FTIR)...
In order to acquire good sensitive amorphous silicon film used for thermal-image infrared detector, different concentrations of titanium-doped hydrogenated amorphous silicon were prepared by magnetron sputtering. To assess how composition and structure affect their electrical characteristics, RBS (Rutherford Back Scattering), Raman, transmission spectrum and temperature dependence on conductivity...
Titanium-doped unhydrogenated amorphous silicon (a-Si: Ti) films were prepared by rf co-sputtering. Structural, optical and electrical properties of a-Si: Ti as a function of Ti content were investigated by RBS(Rutherford Backscattering Spectrometry), XPS(X-ray Photoelectron Spectroscopy), Raman, ESR (Electron Spin Resonance), Spectroscopic Ellipsometry, thermoelectric tests and temperature dependent...
In order to enhance the life of cemented carbide tools for milling Ti6Al4V alloy, Ti(Cr)SiC(O)N (including TiSiCN, TiSiCON, CrSiCN and CrSiCON) coatings were deposited on flat samples for characterization and K40UF cemented carbide end-mills for milling tests. The adherence strength of the coatings was determined using scratch tests. Wear tests were carried out using a ball-on-disk tribometer with...
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