10 research outputs found
Modification of coating-substrate systems under the action of compression plasma flow
The results of studying changes in physical and mechanical properties of coating-substrate systems subjected to the compression plasma flow are presented. The possibility for doping the substrate both with pre-deposited coating components and with plasma-forming substance during liquid-phase mixing and resolidification of near-surface layers melted by the compression plasma flow is shown.ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΈ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Ρ Π·ΠΌΡΠ½ΠΈ ΡΡΠ·ΠΈΠΊΠΎ-ΠΌΠ΅Ρ
Π°Π½ΡΡΠ½ΠΈΡ
Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ ΡΠΈΡΡΠ΅ΠΌ ΠΏΠΎΠΊΡΠΈΡΡΡ-ΠΏΡΠ΄ΠΊΠ»Π°Π΄ΠΊΠ° ΠΏΡΠΈ Π²ΠΏΠ»ΠΈΠ²Ρ Π½Π° Π½ΠΈΡ
ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΉΠ½ΠΈΠΌ ΠΏΠ»Π°Π·ΠΌΠΎΠ²ΠΈΠΌ ΠΏΠΎΡΠΎΠΊΠΎΠΌ. ΠΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΠΎΠ²Π°Π½ΠΎ ΠΌΠΎΠΆΠ»ΠΈΠ²ΡΡΡΡ Π»Π΅Π³ΡΠ²Π°Π½Π½Ρ ΠΌΠ°ΡΠ΅ΡΡΠ°Π»Ρ ΠΏΡΠ΄ΠΊΠ»Π°Π΄ΠΊΠΈ ΡΠΊ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠΎΠΌ ΠΏΠΎΠΏΠ΅ΡΠ΅Π΄Π½ΡΠΎ Π½Π°Π½Π΅ΡΠ΅Π½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΠΈΡΡΡ, ΡΠ°ΠΊ Ρ ΡΠΎΠ±ΠΎΡΠΎΡ ΡΠ΅ΡΠΎΠ²ΠΈΠ½ΠΎΡ ΠΏΠ»Π°Π·ΠΌΠΈ, Ρ ΠΏΡΠΎΡΠ΅ΡΡ ΡΡΠ΄ΠΊΠΎΡΠ°Π·Π½ΠΎΠ³ΠΎ ΠΏΠ΅ΡΠ΅ΠΌΡΡΡΠ²Π°Π½Π½Ρ Ρ ΠΏΠ΅ΡΠ΅Π·Π°ΡΠ²Π΅ΡΠ΄ΡΠ½Π½Ρ ΡΠΎΠ·ΠΏΠ»Π°Π²Π»Π΅Π½ΠΈΡ
ΠΏΡΠ΄ Π΄ΡΡΡ ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΉΠ½ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠΎΠ²ΠΎΠ³ΠΎ ΠΏΠΎΡΠΎΠΊΡ ΠΏΡΠΈΠΏΠΎΠ²Π΅ΡΡ
Π½ΡΡ
ΡΠ°ΡΡΠ².ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠΈΠ·ΠΈΠΊΠΎ-ΠΌΠ΅Ρ
Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΡΠΈΡΡΠ΅ΠΌ ΠΏΠΎΠΊΡΡΡΠΈΠ΅- ΠΏΠΎΠ΄Π»ΠΎΠΆΠΊΠ° ΠΏΡΠΈ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΠΈ Π½Π° Π½ΠΈΡ
ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΈΠΎΠ½Π½ΡΠΌ ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΡΠΌ ΠΏΠΎΡΠΎΠΊΠΎΠΌ. ΠΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΠΎΠ²Π°Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ Π»Π΅Π³ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π° ΠΏΠΎΠ΄Π»ΠΎΠΆΠΊΠΈ ΠΊΠ°ΠΊ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½ΡΠΎΠΌ ΠΏΡΠ΅Π΄Π²Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ Π½Π°Π½Π΅ΡΠ΅Π½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΡΡΡΠΈΡ, ΡΠ°ΠΊ ΠΈ ΡΠ°Π±ΠΎΡΠΈΠΌ Π²Π΅ΡΠ΅ΡΡΠ²ΠΎΠΌ ΠΏΠ»Π°Π·ΠΌΡ, Π² ΠΏΡΠΎΡΠ΅ΡΡΠ΅ ΠΆΠΈΠ΄ΠΊΠΎΡΠ°Π·Π½ΠΎΠ³ΠΎ ΠΏΠ΅ΡΠ΅ΠΌΠ΅ΡΠΈΠ²Π°Π½ΠΈΡ ΠΈ ΠΏΠ΅ΡΠ΅Π·Π°ΡΠ²Π΅ΡΠ΄Π΅Π²Π°Π½ΠΈΡ ΡΠ°ΡΠΏΠ»Π°Π²Π»Π΅Π½Π½ΡΡ
ΠΏΠΎΠ΄ Π΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ΠΌ ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΠΎΠ³ΠΎ ΠΏΠΎΡΠΎΠΊΠ° ΠΏΡΠΈΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠ½ΡΡ
ΡΠ»ΠΎΠ΅Π²
Nanostructured formations and coatings created on the surface of materials exposed to compression plasma flows
The paper presents the results of investigations on changing silicon and aluminium morphology under the action of compression plasma flows generated by the quasi-stationary plasma accelerator (magnetoplasma compressor type). The feasibility of spraying nanostructured metal films by compression flows was demonstrated. The resulting single-layer coating consists of spherical particles measuring 50 to 200 nm. Such particles bonded to each other cover a surface relief including flat areas and regular structures developing during plasma action. The state and composition of a sample surface were studied by SEM- and EXD-methodsΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΈ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Ρ Π·ΠΌΡΠ½ΠΈ ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΡΡ ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ ΠΏΠ»Π°ΡΡΠΈΠ½ ΠΊΡΠ΅ΠΌΠ½ΡΡ ΠΉ Π°Π»ΡΠΌΡΠ½ΡΡ ΠΏΡΠΈ Π²ΠΏΠ»ΠΈΠ²Ρ Π½Π° Π½ΠΈΡ
ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΉΠ½ΠΈΠΌΠΈ ΠΏΠ»Π°Π·ΠΌΠΎΠ²ΠΈΠΌΠΈ ΠΏΠΎΡΠΎΠΊΠ°ΠΌΠΈ, ΡΠΎ Π³Π΅Π½Π΅ΡΡΡΡΡΡΡ ΠΊΠ²Π°Π·ΡΡΡΠ°ΡΡΠΎΠ½Π°ΡΠ½ΠΈΠΌ ΠΏΠ»Π°Π·ΠΌΠΎΠ²ΠΈΠΌ ΠΏΡΠΈΡΠΊΠΎΡΡΠ²Π°ΡΠ΅ΠΌ ΡΠΈΠΏΡ ΠΌΠ°Π³Π½ΡΡΠΎΠΏΠ»Π°Π·ΠΌΠΎΠ²ΠΈΠΉ ΠΊΠΎΠΌΠΏΡΠ΅ΡΠΎΡ. ΠΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΠΎΠ²Π°Π½ΠΎ ΠΌΠΎΠΆΠ»ΠΈΠ²ΡΡΡΡ Π½Π°Π½Π΅ΡΠ΅Π½Π½Ρ Π½Π° ΠΏΡΠ΄ΠΊΠ»Π°Π΄ΠΊΠΈ Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡΠ½ΠΈΡ
ΠΌΠ΅ΡΠ°Π»Π΅Π²ΠΈΡ
ΠΏΠΎΠΊΡΠΈΡΡ Π·Π° Π΄ΠΎΠΏΠΎΠΌΠΎΠ³ΠΎΡ ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΉΠ½ΠΈΡ
ΠΏΠΎΡΠΎΠΊΡΠ².ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΏΠ»Π°ΡΡΠΈΠ½ ΠΊΡΠ΅ΠΌΠ½ΠΈΡ ΠΈ Π°Π»ΡΠΌΠΈΠ½ΠΈΡ ΠΏΡΠΈ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΠΈ Π½Π° Π½ΠΈΡ
ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΈΠΎΠ½Π½ΡΠΌΠΈ ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΡΠΌΠΈ ΠΏΠΎΡΠΎΠΊΠ°ΠΌΠΈ, Π³Π΅Π½Π΅ΡΠΈΡΡΠ΅ΠΌΡΠΌΠΈ ΠΊΠ²Π°Π·ΠΈΡΡΠ°ΡΠΈΠΎΠ½Π°ΡΠ½ΡΠΌ ΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΡΠΌ ΡΡΠΊΠΎΡΠΈΡΠ΅Π»Π΅ΠΌ ΡΠΈΠΏΠ° ΠΌΠ°Π³Π½ΠΈΡΠΎΠΏΠ»Π°Π·ΠΌΠ΅Π½Π½ΡΠΉ ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΎΡ. ΠΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΠΎΠ²Π°Π½Π° Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ Π½Π°Π½Π΅ΡΠ΅Π½ΠΈΡ Π½Π° ΠΏΠΎΠ΄Π»ΠΎΠΆΠΊΠΈ Π½Π°Π½ΠΎΡΡΡΡΠΊΡΡΡΠ½ΡΡ
ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΠΎΡΠΎΠΊΠΎΠ²
Fermi Surfaces of Diborides: MgB2 and ZrB2
We provide a comparison of accurate full potential band calculations of the
Fermi surfaces areas and masses of MgB2 and ZrB2 with the de Haas-van Alphen
date of Yelland et al. and Tanaka et al., respectively. The discrepancies in
areas in MgB2 can be removed by a shift of sigma-bands downward with respect to
pi-bands by 0.24 eV. Comparison of effective masses lead to orbit averaged
electron-phonon coupling constants lambda(sigma)=1.3 (both orbits),
lambda(pi)=0.5. The required band shifts, which we interpret as an exchange
attraction for sigma states beyond local density band theory, reduces the
number of holes from 0.15 to 0.11 holes per cell. This makes the occurrence of
superconductivity in MgB2 a somewhat closer call than previously recognized,
and increases the likelihood that additional holes can lead to an increased Tc.Comment: 7 pages including 4 figure
Mechanical Properties of Copper/Carbon Nanocomposite Films Formed by Microwave Plasma Assisted Deposition Techniques from Argon-Methane and Argon-Acetylene Gas Mixtures.
International audienc
Electron Field Emission and Surface Morphology of a-C and a-C:H Thin Films
International audienc