scholarly journals Structure and Properties of Tantalum Coatings Obtained by Electron Beam Technology on Aluminum Substrates

2020 ◽  
Vol 10 (11) ◽  
pp. 3737
Author(s):  
Khatia Ananiashvili ◽  
Mikheil Okrosashvili ◽  
Tamar Loladze ◽  
Natalia Valko ◽  
Tomasz N. Koltunowicz
Keyword(s):  
Electron Beam ◽  
Physical And Mechanical Properties ◽  
Electron Beam Evaporation ◽  
Aluminum Substrate ◽  
Structure And Properties ◽  
High Adhesion ◽  
Reactive Zone ◽  
Tantalum Coatings ◽  
Aluminum Substrates ◽  
High Degree

The paper deals with the study of the structure and properties of tantalum coatings formed by electron beam evaporation and deposition of tantalum powder on 300–450 °C aluminum substrate. The research results of surface morphology, phase and elemental composition show that high activity of an aluminum substrate and specific conditions for vapor-phase technology promote formation of tantalum coatings characterized by a high degree of crystalline grains, with high adhesion and hardness despite the surface cracks. It was observed that the optimum deposition temperature of tantalum on aluminum substrates varies from 300 °C to 350 °C. These coatings demonstrate excellent physical and mechanical properties due to formation of intermetallic phases in the reactive zone.

Interface structure of face-centered-cubic-Ti thin film grown on 6H–SiC substrate

2000 ◽  
Vol 15 (10) ◽  
pp. 2121-2124 ◽  
Author(s):  
Y. Sugawara ◽  
N. Shibata ◽  
S. Hara ◽  
Y. Ikuhara
Keyword(s):  
Thin Film ◽  
Orientation Relationship ◽  
High Resolution Electron Microscopy ◽  
Electron Beam Evaporation ◽  
Face Centered Cubic ◽  
High Adhesion ◽  
Resolution Electron ◽  
Face Centered ◽  
Relationship Of ◽  
High Degree

A titanium thin film was deposited on the flat (0001) face of a 6H–SiC by electron beam evaporation at room temperature in a vacuum of 5.1 × 10−8 Pa. The Ti film was epitaxially grown on the surface, and the interface between Ti and SiC was characterized by high-resolution electron microscopy. It was found that the structure of the deposited titanium is face-centered cubic (fcc), although bulk titanium metal usually has a hexagonal close-packed or body-centered cubic crystal structure. We believe that the unusual fcc structure of Ti thin film is due to the high adhesion of the film to the substrate and the high degree of coherency between them. The orientation relationship of the fcc-Ti/6H–SiC interface was (111)fcc-Ti//(0001)6H–SiC and [110]fcc-Ti//[1120]6H−SiC. Preliminary calculations indicate that this orientation relationship maximizes the lattice coherency across the interface.

scholarly journals Effects of Deposition Temperature on Structural, Optical Properties and Laser Damage of LaTiO3 Thin Films

2018 ◽  
Vol 2018 ◽  
pp. 1-6
Author(s):  
Jianchao Li ◽  
Wanmin Yang ◽  
Junhong Su ◽  
Chen Yang
Keyword(s):  
Electron Beam ◽  
Deposition Temperature ◽  
Chemical Structure ◽  
Damage Threshold ◽  
Electron Beam Evaporation ◽  
Laser Damage Threshold ◽  
Laser Damage ◽  
Structure And Properties ◽  
Quartz Substrates ◽  
The Relationship

LaTiO3 films were prepared under various deposition temperatures using electron beam evaporation on Si and fused quartz substrates. The relationship between the deposition temperature and structure and properties of optics was investigated by XPS, XRD, and various optical testing. The results showed that the LaTiO3 film is amorphous when the deposition temperature is below 200°C. The refractive index of LaTiO3 films increases from 1.8302 to 1.9112 at 1064 nm with the rise of deposition temperature. The extinction coefficient of LaTiO3 films is less than 10−6 in the range of 350 to 1700 nm. The laser damage threshold increases at first and then decreases with the increase of deposition temperature. The maximum of the laser damage threshold was 18.18 J/cm2 when the deposition temperature was 150°C. Compared with TiO2 film, the chemical structure and the laser damage threshold of LaTiO3 film are more stable by preparation of electron beam evaporation.

Structure and Properties of Nanostructured SZO Films Obtained by Electron-Beam Evaporation

2021 ◽  
Vol 66 (6) ◽  
pp. 1090-1094
Author(s):  
V. V. Privezentsev ◽  
A. P. Sergeev ◽  
A. A. Firsov ◽  
E. E. Yakimov ◽  
D. V. Irzhak
Keyword(s):  
Electron Beam ◽  
Electron Beam Evaporation ◽  
Structure And Properties

Structure and Properties of a Titanium Film – Aluminum Substrate System Alloyed by an Intense Pulsed Electron Beam

2016 ◽  
Vol 683 ◽  
pp. 9-14
Author(s):  
Olga V. Krysina ◽  
Maria E. Rygina ◽  
Elizaveta A. Petrikova ◽  
Anton D. Teresov ◽  
Yurii F. Ivanov
Keyword(s):  
Surface Layer ◽  
Electron Beam ◽  
Wear Rate ◽  
Tribological Properties ◽  
Electron Beam Melting ◽  
High Strength ◽  
Aluminum Substrate ◽  
Structure And Properties ◽  
Titanium Film ◽  
Pulsed Electron Beam

The structure and properties of a Ti film – Al substrate system alloyed by an intense pulsed electron beam are studied. It is shown that electron beam melting of this system provides the formation of a multiphase submicrocrystalline structure with high strength and tribological properties in the surface layer. Irradiation modes, which allow an increase in the microhardness of the material and a decrease in its wear rate, are defined. Physical substantiation of this phenomenon is given.

FIBROUS COMPOSITE MATERIALS WITH A METAL MATRIX (review)

2021 ◽  
pp. 27-35
Author(s):  
A.N. Zhabin ◽  
◽  
D.V. Sidorov ◽  
A.N. Nyafkin ◽  
◽  
...  
Keyword(s):  
Composite Materials ◽  
Carbon Fibers ◽  
Fibrous Composite ◽  
Intermetallic Layer ◽  
Physical And Mechanical Properties ◽  
Structure And Properties ◽  
Ceramic Fibers ◽  
Ultrasonic Consolidation ◽  
High Adhesion ◽  
Multilayer Metal

The article provides an overview of the literature in the field of composite materials (CM) based on metal matrices reinforced with carbon fibers. The main structural, physical and mechanical properties and morphology of such CMS are briefly described. The structure and properties of new CMS from multilayer metal-intermetallic multilayer laminates reinforced with carbon and ceramic fibers are also presented. Application of the method of ultrasonic consolidation for the manufacture of multilayer fibrous CMs based on metal-intermetallic laminates provides high adhesion of fibers with an intermetallic layer.

Structure and properties of refractory compounds deposited by electron beam evaporation

1978 ◽  
Vol 54 (1) ◽  
pp. 85-106 ◽  
Author(s):  
R.F. Bunshah ◽  
R. Nimmagadda ◽  
W. Dunford ◽  
B.A. Movchan ◽  
A.V. Demchishin ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Evaporation ◽  
Structure And Properties ◽  
Refractory Compounds
Sign in / Sign up

Export Citation Format

Share Document