Effects of substrate temperature on morphology, structure and chemical composition of Cu2S films

2013 ◽  
Author(s):  
Bing Ren ◽  
Jian Huang ◽  
Lin Wang ◽  
Ke Tang ◽  
Kaifeng Qin ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Substrate Temperature

scholarly journals Influence of substrate temperature and gas pressure on aluminum oxynitride coatings obtained by pulsed laser deposition

2017 ◽  
Vol 35 (1) ◽  
pp. 254-264
Author(s):  
Joanna Piwowarczyk ◽  
Roman Jędrzejewski ◽  
Jolanta Baranowska
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Substrate Temperature ◽  
Pulsed Laser Deposition ◽  
Total Pressure ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Aluminum Oxynitride ◽  
Negative Effect ◽  
Oxynitride Coatings

AbstractThe paper presents results of the investigation on the influence of deposition parameters, such as substrate temperature, total gas pressure and reactive gas composition on the structure, chemical composition and mechanical properties of aluminum oxynitride coatings obtained by pulsed laser deposition (PLD) method. Selection of process parameter ranges, which could be promising for aluminum oxynitride (ALON) coatings deposition, was the main objective of the work. Two series of experiments were carried out with varied pressure and temperature. It was found that from the chemical composition viewpoint, the most promising are atmospheres containing 20 % to 40 % oxygen. The nitrogen to oxygen ratios in the coatings can be controlled by increasing the total pressure or substrate temperature. However, increasing the pressure has a negative effect on the O + N:Al ratio, mechanical properties and quality of the coatings. The influence of temperature is much less drastic and more controllable. Increasing the deposition temperature is much more beneficial since it improves the mechanical properties and can compensate to some extent the negative effect of the total pressure. From the coating quality viewpoint, it is possible to establish an optimum temperature range for which the coatings are characterized by a compact structure and a limited number of droplets.

Deposition of n-Type Bi2Te3 Thin Films on Polyimide by Using RF Magnetron Co-Sputtering Method

2015 ◽  
Vol 15 (10) ◽  
pp. 8299-8304 ◽  
Author(s):  
Sung-Jae Joo ◽  
Bong Seo Kim ◽  
Bok-Ki Min ◽  
Min Wook Oh ◽  
Ji-Eun Lee ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Composition ◽  
Seebeck Coefficient ◽  
Substrate Temperature ◽  
Thermoelectric Properties ◽  
Layered Structure ◽  
Radius Of Curvature ◽  
X Ray ◽  
Coefficient Measurement ◽  
Thermoelectric Thin Films

Bi2Te3 thermoelectric thin films were deposited on the flexible polyimide substrates by RF magnetron co-sputtering of a Bi and a Te targets. The influence of the substrate temperature and RF power on the microstructure, chemical composition, and the thermoelectric properties of the sputtered films was investigated by using scanning electron microscopy, X-ray diffraction, energy dispersive X-ray spectroscopy, and in-plane resistivity/Seebeck coefficient measurement. It was shown that the thermoelectric properties of the films depend sensitively on the Bi/Te chemical composition ratio and the substrate temperature, and the layered structure was clearly observed from the cross section of the (00L)-oriented, nearly stoichiometric Bi2Te3 films when the substrate temperature is higher than 250 °C. As-deposited Bi2Te3 films deposited at 300 °C show the highest power factor of 0.97 mW/K2m and the Seebeck coefficient of −193 μV/K at 32 °C, which also have (00L) preferred orientation and the layered structure. The durability of the Bi2Te3 films on polyimide against repeated bending was also tested by monitoring the film resistance, and it was concluded that the Bi2Te3 films are applicable reliably on the curved surfaces with the radius of curvature larger than 5 mm.

Effects of Deposition Parameters on the Structure, Morphology and Chemical Composition of PLZT Thin Films

1994 ◽  
Vol 341 ◽  
Author(s):  
R. M. Ribeiro ◽  
M. J. M. Gomes ◽  
E. De Matos Gomes ◽  
J. A. Ferreira ◽  
P. L. Q. Mantas ◽  
...  
Keyword(s):  
Thin Films ◽  
Chemical Composition ◽  
Substrate Temperature ◽  
Laser Fluence ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sapphire Substrates ◽  
Deposition Parameters ◽  
Structure Morphology ◽  
Plzt Thin Films

AbstractPLZT thin films from a stoichiometric (9/65/35) commercial target were laser deposited using the second and third harmonics of a nanosecond Nd:YAG laser. The films were grown on oriented sapphire substrates and analysed by X-ray diffraction, SEM and EDX techniques. The influence of the deposition parameters laser fluence and substrate temperature on the physical characteristics of the films is presented.

Composition Study of Amorphous InxAs1-x Films Prepared by Radio-Frequency Sputtering

2014 ◽  
Vol 568-570 ◽  
pp. 1653-1657
Author(s):  
Yan Ping Yao ◽  
Bao Xue Bo
Keyword(s):  
Chemical Composition ◽  
Magnetron Sputtering ◽  
Substrate Temperature ◽  
Substrate Surface ◽  
Rf Magnetron Sputtering ◽  
Surface Dynamics ◽  
Rf Power ◽  
Working Pressure ◽  
Radio Frequency Sputtering ◽  
Composition Study

Amorphous InAs films are deposited on substrates of quartz glass by RF magnetron sputtering technique in different gas ambient. We present a systematic study of the affects of the sputtering parameters on the chemical composition. Amorphous InAs (a-InAs) films have been achieved at higher working pressure when the substrate temperature and RF power are increased respectively. The films composition is controlled by transport phenomena of sputtered atoms from the target to the substrate and by substrate surface dynamics. We study how to improve the sputtering parameters in order to obtain stoichiometric a-InAs films.

Effect of Oxygen Incorporation on the Properties of AlF3 Films

2013 ◽  
Vol 631-632 ◽  
pp. 121-126
Author(s):  
Xu Li ◽  
Jian Sun ◽  
Wei Li Zhang ◽  
Yong Qiang Hou ◽  
Kai He ◽  
...  
Keyword(s):  
Optical Properties ◽  
Chemical Composition ◽  
Optical Absorption ◽  
Substrate Temperature ◽  
Laser Damage ◽  
Total Stress ◽  
Damage Resistance ◽  
Evaporation Technique ◽  
Effect Of Oxygen ◽  
Coating Chamber

In order to reveal the influence of oxidization on the properties of AlF3 films, single layers of AlF3 were deposited at different substrate temperature by thermo evaporation technique with or without oxygen injected into the coating chamber. The chemical composition, total stress, optical properties and laser damage resistance of samples were characterized. Comparative study indicates the AlF3 films prepared under higher oxygen pressure have more oxides which result from hydration process in atmosphere. The presence of oxides also reduces total stress and optical absorption of the fluoride coatings.

Corrosion Resistance of Inconel 625 and Austenitic Steel M41 after Laser Claddings

2015 ◽  
Vol 647 ◽  
pp. 115-120
Author(s):  
Stanislav Němeček ◽  
Lukáš Fiedler ◽  
Pavla Fišerová
Keyword(s):  
Corrosion Resistance ◽  
Chemical Composition ◽  
Chemical Analysis ◽  
Substrate Temperature ◽  
Austenitic Steel ◽  
Microscopic Observation ◽  
Steel Substrate ◽  
Inconel 625 ◽  
Profound Impact ◽  
The Impact

<span><p><span lang="DE">The present paper explores the impact of laser cladding parameters on the corrosion behavior of the resulting surface. Powders of Inconel 625 and austenitic Metco <st1:metricconverter w:st="on" productid="41C">41C</st1:metricconverter> steel were deposited on steel substrate. It was confirmed that the level of dilution has profound impact on the corrosion resistance and that dilution has to be minimized. However, the chemical composition of the cladding is altered even in the course of the cladding process, a fact which is related to the increase in the substrate temperature. The cladding process was optimized to achieve maximum corrosion resistance. The results were verified and validated using microscopic observation, chemical analysis and corrosion testing. </span></p>

The Origin of the Moon

1962 ◽  
Vol 14 ◽  
pp. 149-155 ◽  
Author(s):  
E. L. Ruskol
Keyword(s):  
Chemical Composition ◽  
Solar System ◽  
The Moon ◽  
The Earth ◽  
The Difference ◽  
Origin Of The Moon

The difference between average densities of the Moon and Earth was interpreted in the preceding report by Professor H. Urey as indicating a difference in their chemical composition. Therefore, Urey assumes the Moon's formation to have taken place far away from the Earth, under conditions differing substantially from the conditions of Earth's formation. In such a case, the Earth should have captured the Moon. As is admitted by Professor Urey himself, such a capture is a very improbable event. In addition, an assumption that the “lunar” dimensions were representative of protoplanetary bodies in the entire solar system encounters great difficulties.

On the Inhomogeneity of Chemical Composition over the Surface of 21 Per

1976 ◽  
Vol 32 ◽  
pp. 343-349
Author(s):  
Yu.V. Glagolevsky ◽  
K.I. Kozlova ◽  
V.S. Lebedev ◽  
N.S. Polosukhina
Keyword(s):  
Chemical Composition ◽  
Spectral Line ◽  
Variable Star ◽  
Radial Velocities ◽  
Crimean Astrophysical Observatory ◽  
Line Intensities ◽  
Magnetic Variable

SummaryThe magnetic variable star 21 Per has been studied from 4 and 8 Å/mm spectra obtained with the 2.6 - meter reflector of the Crimean Astrophysical Observatory. Spectral line intensities (Wλ) and radial velocities (Vr) have been measured.

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