154 research outputs found
Making Alloys (TI1 - xAlx) N using plasma CVD technique from AlCl3 Powder, H2 and N2 Gas ,with solvent TiCl4
Get PDFThe substitution of Ti atoms by Al atoms in TiN lattice sites to form (Ti1-xAlx)N is clearly demonstrated by the coatings which were deposited on steel substrate and using plasma CVD technique. The presence of Al atoms in TiN lattice site is shown by means of XRD and EDX techniques: lattice parameters decreasing of TiN as the fraction of Al increases (XRD) and precipitation of hexagonal AlN phase (XRD) as the fraction of Al exceeding 0.8 (EDX). The hardness of these coating are just around 30 GPa, which is beyond the values reported in literatures
PERANAN FASE AMORF Si3N4 PADA NANOKOMPOSIT nc-TiN/a-Si3N4 DALAM MENINGKATKAN KEKERASAN DAN STABILITAS TERMAL
Get PDFThe role of Si3N4 amorphous phase in nc-TiN/a-Si3N4 nanocomposites will be shown and compared with polycrystalline ZrN/Ni which has no such amorphous phase (non-composites). The presence of amorphous phase Si3N4 increases the hardness of film as well as the toughness of the bulk nanocomposites under indentation load. It has been observed that nc-TiN/a-Si3N4 nanocomposites films has higher thermal stability than ZrN/Ni polycrystalline films.Keywords: Nanokomposit, ZrN/Ni, fase amorf Si3N
The Role of Si3N4 Amorphous Phase in nc-TiN/a-Si3N4 Nanocomposites in Increases the hardness and Thermal Stability
Get PDFThe role of Si3N4 amorphous phase in nc-TiN/a-Si3N4 nanocomposites will be shown and compared with polycrystalline ZrN/Ni which has no such amorphous phase (non-composites). The presence of amorphous phase Si3N4 increases the hardness of film as well as the toughness of the bulk nanocomposites under indentation load. It has been observed that nc-TiN/a-Si3N4 nanocomposites films has higher thermal stability than ZrN/Ni polycrystalline films
PROSEDUR PENGUKURAN KEKERASAN YANG BENAR PADA NANOKOMPOSIT nc-TiN/a-Si3N4
Get PDFHardness of nc-TiN/a-Si3N4 nanocomposites which was determined by using two methods of measurements i. e. depth sensing method and remaining plastic indentation area that were magnified by using SEM (Scanning Electron Microscope) lie in the good agreement. The hardness value is not influenced by the biaxial and residual compressive stress. The measurement of the biaxial stress on the substrate shows a very small value of biaxial stress as well as the constant hardness and crystallite size against annealing temperature. Therefore, the reported hardness value here is theintrinsic value that depend on its microstructure properties.Keywords: Nanokomposit, hardness, nanokomposi
Development of Hardness Measurement Procedure for Nanocomposite nc-TiN/a-Si3N4
Get PDFHardness of nc-TiN/a-Si3N4 nanocomposites which was determined by using two methods of measurements i. e. depth sensing method and remaining plastic indentation area that were magnified by using SEM (Scanning Electron Microscope) lie in the good agreement. The hardness value is not influenced by the biaxial and residual compressive stress. The measurement of the biaxial stress on the substrate shows a very small value of biaxial stress as well as the constant hardness and crystallite size against annealing temperature. Therefore, the reported hardness value here is the intrinsic value that depend on its microstructure properties
Pembuatan Paduan (Ti1-xalx)n Dengan Teknik Plasma Cvd Dari Bubuk Alcl3, Gas N2 Dan H2, Serta Larutan Ticl4
Get PDF The substitution of Ti atoms by Al atoms in TiN lattice sites to form (Ti1-xAlx)N is clearly demonstrated by the coatings which were deposited on steel substrate and using plasma CVD technique. The presence of Al atoms in TiN lattice site is shown by means of XRD and EDX techniques: lattice parameters decreasing of TiN as the fraction of Al increases (XRD) and precipitation of hexagonal AlN phase (XRD) as the fraction of Al exceeding 0.8 (EDX). The hardness of these coating are just around 30 GPa, which is beyond the values reported in literatures
Vliv Moto GP na cestovní ruch v Brně
No full textThe main aim of the bachelor thesis is find out how Moto GP influence tourism in Brno, what is the availability of accommodation facilities, what is the increase in prices during this period. In the theoretical part, analyse the tourism as a whole, destination of tourism, Moto GP. Practical part examines using a questionnaire how residents perceive the action Moto GP. There is unfortunately not sufficient statistical data to determine the icrease in prices as well as occupancy of acommodation capacities in the period when Moto GP race takes place in Brno. That is the reason why the author of this thesis has decided to conduct a research by using a sample of 10 % of hotels in Brno to be able to answer these questions
Acidentes de moto nos adolescentes e algumas configurações psíquicas
Get PDFO autor re-examina os resultados de uma investigação
sobre a predisposição dos adolescentes aos acidentes
de «moto».
Interpreta os resultados na perspectiva de configurações
psíquicas da adolescência na sua relação com a
ansiedade e a depressão.ABSTRACT: The author re-examines the results of a research
project on the predisposition of adolescents towards
motorcycle accidents.
He interprets the results from the point of view of
the psychological configuration of adolescence in its
relation to anxiety and depression.info:eu-repo/semantics/publishedVersio
ANALISIS KOMPOSISI FASA DENGAN METODE RIETVELD DAN PENGARUHNYA TERHADAP KEKERASAN NANOKOMPOSIT Ti-Si-N
Get PDFPhase composition analysis using rietveld methode and it's influence to the hardness of Ti-Si-N nanocomposites.XRD data of nanocomposites Ti-Si-N have been analysed using GSAS based on Rietveld Method in order to identifyphases and their composition as well as its influence on the hardness of these nanocomposites. Several new phaseshave been found in the sample beside the nc-TiN/a-Si3N4& a-/nc-TiSi2 that have been known widely. From the obtainedcrystalline phase, after the calculation of amorf Si3N4 and TiSi2 phase fraction, it is found that the optimum hardness canbe reached when the fraction of a-Si3N4 phase around 8 wt.%Keywords: Nanokomposit, Metode Rietveld, GSA
Phase Composition Analysis Using Rietveld Methode and It\u27s Influence To The Hardness Of Ti-Si-N Nanocomposites
Get PDFPhase composition analysis using rietveld methode and it’s influence to the hardness of Ti-Si-N nanocomposites. XRD data of nanocomposites Ti-Si-N have been analysed using GSAS based on Rietveld Method in order to identify phases and their composition as well as its influence on the hardness of these nanocomposites. Several new phases have been found in the sample beside the nc-TiN/a-Si3N4& a-/nc-TiSi2 that have been known widely. From the obtained crystalline phase, after the calculation of amorf Si3N4 and TiSi2 phase fraction, it is found that the optimum hardness can be reached when the fraction of a-Si3N4 phase around 8 wt.
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