156 research outputs found
Π’Π΅Ρ Π½ΠΎΠ»ΠΎΠ³ΠΈΡ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΠΈ Π΄Π΅ΠΌΠΏΡΠΈΡΡΡΡΠΈΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° Π°ΡΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ½ΡΡ ΠΏΠΎΠΊΡΡΡΠΈΠΉ
The process of obtaining aerated (filled with air bubbles) polymer coatings has been developed and investigated by the method of flame spraying with an assessment of their ability to damp vibrations. A technology for the controlled formation of aerated polymer coatings has been developed while using the capabilities of the ΠΠΠ (OIM) 050 polymer thermal atomizer design which consists in providing a concurrent air flow between the flame torch and the jet of powder material. The experiments have been carried out with such thermoplastic polymers as polyethylene terephthalate, high pressure polyethylene, ultra high molecular weight polyethylene, polyamide. It has been found that the aeration coefficient grows almost in direct proportion with an increase in the amount of air in the concurrent flow for all investigated polymer coatings. It is noted that the aeration process is influenced by the rheological properties of liquid polymers, or rather, the value of the polymer melt flow rate. The limiting values of air in the concurrent flow have been determined, which make it possible not to reduce the adhesion of polymer coatings to steel substrates by less than 6 MPa and not to decrease their hardness by more than 25β30 %. Studies of the damping properties of samples with polymer coatings have been carried out on a stand, the kinematic diagram of which is based on loading the free end of a cantilever sample, abrupt removal of the load and registration of free damped oscillations by an induction-type contactless sensor connected to a computer. It is shown that the use of aeration when forming noise-absorbing coatings on steel samples can increase their logarithmic damping decrement by 18β26 %.Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½ ΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ ΠΏΡΠΎΡΠ΅ΡΡ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ Π°ΡΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
(Π½Π°ΠΏΠΎΠ»Π½Π΅Π½Π½ΡΡ
ΠΏΡΠ·ΡΡΡΠΊΠ°ΠΌΠΈ Π²ΠΎΠ·Π΄ΡΡ
Π°) ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π³Π°Π·ΠΎΠΏΠ»Π°ΠΌΠ΅Π½Π½ΠΎΠ³ΠΎ Π½Π°ΠΏΡΠ»Π΅Π½ΠΈΡ Ρ ΠΎΡΠ΅Π½ΠΊΠΎΠΉ ΠΈΡ
ΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡΠΈ ΠΊ Π΄Π΅ΠΌΠΏΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΊΠΎΠ»Π΅Π±Π°Π½ΠΈΠΉ. ΠΡΠΏΠΎΠ»ΡΠ·ΡΡ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠΈ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΈ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΠ΅ΡΠΌΠΎΡΠ°ΡΠΏΡΠ»ΠΈΡΠ΅Π»Ρ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΠΠΠ 050, Π·Π°ΠΊΠ»ΡΡΠ°ΡΡΠΈΠ΅ΡΡ Π² ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΠΈ ΠΏΠΎΠ΄Π°ΡΠΈ ΡΠΏΡΡΠ½ΠΎΠ³ΠΎ Π²ΠΎΠ·Π΄ΡΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΡΠΎΠΊΠ° ΠΌΠ΅ΠΆΠ΄Ρ ΡΠ°ΠΊΠ΅Π»ΠΎΠΌ ΠΏΠ»Π°ΠΌΠ΅Π½ΠΈ ΠΈ ΡΡΡΡΠ΅ΠΉ ΠΏΠΎΡΠΎΡΠΊΠΎΠ²ΠΎΠ³ΠΎ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π°, ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π° ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡ ΡΠΏΡΠ°Π²Π»ΡΠ΅ΠΌΠΎΠ³ΠΎ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π°ΡΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ. ΠΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΡ Π²ΡΠΏΠΎΠ»Π½ΡΠ»ΠΈΡΡ Ρ ΡΠ°ΠΊΠΈΠΌΠΈ ΡΠ΅ΡΠΌΠΎΠΏΠ»Π°ΡΡΠΈΡΠ½ΡΠΌΠΈ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ°ΠΌΠΈ, ΠΊΠ°ΠΊ ΠΏΠΎΠ»ΠΈΡΡΠΈΠ»Π΅Π½ΡΠ΅ΡΠ΅ΡΡΠ°Π»Π°Ρ, ΠΏΠΎΠ»ΠΈΡΡΠΈΠ»Π΅Π½ Π²ΡΡΠΎΠΊΠΎΠ³ΠΎ Π΄Π°Π²Π»Π΅Π½ΠΈΡ, ΡΠ²Π΅ΡΡ
Π²ΡΡΠΎΠΊΠΎΠΌΠΎΠ»Π΅ΠΊΡΠ»ΡΡΠ½ΡΠΉ ΠΏΠΎΠ»ΠΈΡΡΠΈΠ»Π΅Π½, ΠΏΠΎΠ»ΠΈΠ°ΠΌΠΈΠ΄. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½Ρ Π°ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠ°ΡΡΠ΅Ρ ΠΏΡΠ°ΠΊΡΠΈΡΠ΅ΡΠΊΠΈ ΠΏΡΡΠΌΠΎ ΠΏΡΠΎΠΏΠΎΡΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎ Ρ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ΠΌ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π° Π²ΠΎΠ·Π΄ΡΡ
Π° Π² ΡΠΏΡΡΠ½ΠΎΠΌ ΠΏΠΎΡΠΎΠΊΠ΅ Ρ Π²ΡΠ΅Ρ
ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΠΌΡΡ
ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ. ΠΡΠΌΠ΅ΡΠ΅Π½ΠΎ, ΡΡΠΎ Π½Π° ΠΏΡΠΎΡΠ΅ΡΡ Π°ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΎΠΊΠ°Π·ΡΠ²Π°ΡΡ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΡΠ΅ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΆΠΈΠ΄ΠΊΠΈΡ
ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠΎΠ², Π° ΡΠΎΡΠ½Π΅Π΅, Π²Π΅Π»ΠΈΡΠΈΠ½Π° ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ ΡΠ΅ΠΊΡΡΠ΅ΡΡΠΈ ΡΠ°ΡΠΏΠ»Π°Π²Π° ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ°. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΠΏΡΠ΅Π΄Π΅Π»ΡΠ½ΡΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΡ Π²ΠΎΠ·Π΄ΡΡ
Π° Π² ΡΠΏΡΡΠ½ΠΎΠΌ ΠΏΠΎΡΠΎΠΊΠ΅, ΠΊΠΎΡΠΎΡΡΠ΅ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡ Π½Π΅ ΡΠ½ΠΈΠΆΠ°ΡΡ Π·Π½Π°ΡΠ΅Π½ΠΈΡ Π°Π΄Π³Π΅Π·ΠΈΠΈ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ½ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ ΡΠΎ ΡΡΠ°Π»ΡΠ½ΡΠΌΠΈ ΠΏΠΎΠ΄Π»ΠΎΠΆΠΊΠ°ΠΌΠΈ ΠΌΠ΅Π½Π΅Π΅ 6 ΠΠΠ° ΠΈ Π½Π΅ ΡΠΌΠ΅Π½ΡΡΠ°ΡΡ ΠΈΡ
ΡΠ²Π΅ΡΠ΄ΠΎΡΡΡ Π±ΠΎΠ»Π΅Π΅ ΡΠ΅ΠΌ Π½Π° 25β30 %. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π΄Π΅ΠΌΠΏΡΠΈΡΡΡΡΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΠΎΠ±ΡΠ°Π·ΡΠΎΠ² Ρ ΠΏΠΎΠ»ΠΈΠΌΠ΅ΡΠ½ΡΠΌΠΈ ΠΏΠΎΠΊΡΡΡΠΈΡΠΌΠΈ ΠΎΡΡΡΠ΅ΡΡΠ²Π»ΡΠ»ΠΈ Π½Π° ΡΡΠ΅Π½Π΄Π΅, ΠΊΠΈΠ½Π΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠ°Ρ ΡΡ
Π΅ΠΌΠ° ΠΊΠΎΡΠΎΡΠΎΠ³ΠΎ ΠΎΡΠ½ΠΎΠ²Π°Π½Π° Π½Π° Π½Π°Π³ΡΡΠΆΠ΅Π½ΠΈΠΈ ΡΠ²ΠΎΠ±ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΊΠΎΠ½ΡΠ° ΠΊΠΎΠ½ΡΠΎΠ»ΡΠ½ΠΎ Π·Π°ΠΊΡΠ΅ΠΏΠ»Π΅Π½Π½ΠΎΠ³ΠΎ ΠΎΠ±ΡΠ°Π·ΡΠ°, ΡΠ΅Π·ΠΊΠΎΠΌ ΡΠ½ΡΡΠΈΠΈ Π½Π°Π³ΡΡΠ·ΠΊΠΈ ΠΈ ΡΠ΅Π³ΠΈΡΡΡΠ°ΡΠΈΠΈ ΡΠ²ΠΎΠ±ΠΎΠ΄Π½ΡΡ
Π·Π°ΡΡΡ
Π°ΡΡΠΈΡ
ΠΊΠΎΠ»Π΅Π±Π°Π½ΠΈΠΉ Π±Π΅ΡΠΊΠΎΠ½ΡΠ°ΠΊΡΠ½ΡΠΌ Π΄Π°ΡΡΠΈΠΊΠΎΠΌ ΠΈΠ½Π΄ΡΠΊΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΡΠΈΠΏΠ°, ΡΠ²ΡΠ·Π°Π½Π½ΡΠΌ Ρ ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠΎΠΌ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ Π°ΡΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΈ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ ΡΡΠΌΠΎΠΏΠΎΠ³Π»ΠΎΡΠ°ΡΡΠΈΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ Π½Π° ΡΡΠ°Π»ΡΠ½ΡΡ
ΠΎΠ±ΡΠ°Π·ΡΠ°Ρ
ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΡΠ²Π΅Π»ΠΈΡΠΈΡΡ ΠΈΡ
Π»ΠΎΠ³Π°ΡΠΈΡΠΌΠΈΡΠ΅ΡΠΊΠΈΠΉ Π΄Π΅ΠΊΡΠ΅ΠΌΠ΅Π½Ρ Π·Π°ΡΡΡ
Π°Π½ΠΈΡ Π½Π° 18β26 %
Π‘ΡΡΡΠΊΡΡΡΠ° ΠΈ ΡΡΠΈΠ±ΠΎΡΠ΅Ρ Π½ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° Ρ ΡΠΎΠΌΠΎΠ²ΡΡ ΠΏΠΎΠΊΡΡΡΠΈΠΉ, ΡΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½Π½ΡΡ ΡΠ»Π΅ΠΊΡΡΠΎΠ΄Π΅ΡΠΎΡΠΌΠ°ΡΠΈΠΎΠ½Π½ΡΠΌ ΠΏΠ»Π°ΠΊΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Π³ΠΈΠ±ΠΊΠΈΠΌ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠΎΠΌ
The paper contains results of investigations on structure and tribotechnical properties of chromium coatings formed by a method of electrodeformation cladding with flexible tools (EDCFT). The purpose of these investigations is to assess prospects for application of the coatings as an alternative to galvanic chrome plating which is widely used in manufacturing hydraulic cylinder rods of metal-cutting machines. Rotary metal brushes with a wire pile made of 65Π-steel and 03Π₯17Π14Π2-stainless steel have been used as a flexible tool. A compacted bar obtained by sintering a mixture of pure chromium powders and a nano-sized diamond-graphite blend UDDG has been employed as a donor material for EDCFT. According to results of the research it has been established that alloying elements of wire pile such as chromium and nickel are added to a coating composition while forming coatings a stainless steel brush. So in the case of using brushes with wire pile of 03X17H14M2-stainless steel the amount of chromium and nickel in a clad coating layer is 5.3 and 9.6 times higher in percentage, respectively, in comparison with the coating formed by a 65Π-steel brush that can contribute to improvement of coating corrosion resistance. At the same time, surface relief of the coating has a developed rough structure consisting of chromium microparticles having various size that are tightly packed and elongated in the direction of brush rotation and there are no flaws in the form of discontinuities and delaminations. Tribological tests have been performed under conditions of βboundary lubricationβ on a rotary friction machine that implements friction of a rubber indenter on a flat surface of a rotating disk. According to data of the tribotechnical tests it has been ascertained that under conditions of βboundary frictionβ for such paired samples as βcoated disc β rubber rollerβ chromium coatings formed by the EDCFT method, have the lowest values of a sliding friction coefficient (fΡΡΒ = 0.023) which are 7.5 times lower than chromium coatings obtained by electroplating. At the same time the wear of rubber rollers in pairs with electroplated chromium coatings has turned out to be less than in pairs with the coating formed by the EDCFT method..Β ΠΡΠΈΠ²Π΅Π΄Π΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΡΡΡΡΠΊΡΡΡΡ ΠΈ ΡΡΠΈΠ±ΠΎΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² Ρ
ΡΠΎΠΌΠΎΠ²ΡΡ
ΠΏΠΎΠΊΡΡΡΠΈΠΉ, ΡΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΠ΄Π΅ΡΠΎΡΠΌΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΠ»Π°ΠΊΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π³ΠΈΠ±ΠΊΠΈΠΌ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠΎΠΌ (ΠΠΠΠΠ), Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π½ΡΡ
Ρ ΡΠ΅Π»ΡΡ ΠΎΡΠ΅Π½ΠΊΠΈ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ² ΠΈΡ
ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ Π°Π»ΡΡΠ΅ΡΠ½Π°ΡΠΈΠ²Ρ Π³Π°Π»ΡΠ²Π°Π½ΠΈΡΠ΅ΡΠΊΠΎΠΌΡ Ρ
ΡΠΎΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ, ΡΠΈΡΠΎΠΊΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΠΌΠΎΠΌΡ ΠΏΡΠΈ ΠΈΠ·Π³ΠΎΡΠΎΠ²Π»Π΅Π½ΠΈΠΈ ΡΡΠΎΠΊΠΎΠ² Π³ΠΈΠ΄ΡΠΎΡΠΈΠ»ΠΈΠ½Π΄ΡΠΎΠ² ΠΌΠ΅ΡΠ°Π»Π»ΠΎΡΠ΅ΠΆΡΡΠΈΡ
ΡΡΠ°Π½ΠΊΠΎΠ². Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ Π³ΠΈΠ±ΠΊΠΎΠ³ΠΎ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠ° ΠΏΡΠΈΠΌΠ΅Π½ΡΠ»ΠΈΡΡ Π²ΡΠ°ΡΠ°ΡΡΠΈΠ΅ΡΡ ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ΅ΡΠΊΠΈ Ρ ΠΏΡΠΎΠ²ΠΎΠ»ΠΎΡΠ½ΡΠΌ Π²ΠΎΡΡΠΎΠΌ, Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π½ΡΠΌ ΠΈΠ· ΡΡΠ°Π»ΠΈ 65Π ΠΈ Π½Π΅ΡΠΆΠ°Π²Π΅ΡΡΠ΅ΠΉ ΡΡΠ°Π»ΠΈ 03Π₯17Π14Π2. ΠΠ°ΡΠ΅ΡΠΈΠ°Π»-Π΄ΠΎΠ½ΠΎΡ ΠΏΡΠΈ ΠΠΠΠΠ β ΠΊΠΎΠΌΠΏΠ°ΠΊΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠΉ Π±ΡΡΡΠΎΠΊ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΠΉ ΠΏΡΡΠ΅ΠΌ ΡΠΏΠ΅ΠΊΠ°Π½ΠΈΡ ΡΠΌΠ΅ΡΠΈ ΠΏΠΎΡΠΎΡΠΊΠΎΠ² ΡΠΈΡΡΠΎΠ³ΠΎ Ρ
ΡΠΎΠΌΠ° ΠΈ Π½Π°Π½ΠΎΡΠ°Π·ΠΌΠ΅ΡΠ½ΠΎΠΉ Π°Π»ΠΌΠ°Π·Π½ΠΎ-Π³ΡΠ°ΡΠΈΡΠΎΠ²ΠΎΠΉ ΡΠΈΡ
ΡΡ Π£ΠΠΠ. ΠΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ°ΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΏΡΠΈ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΠΈ ΠΏΠΎΠΊΡΡΡΠΈΠΉ ΡΠ΅ΡΠΊΠΎΠΉ ΠΈΠ· Π½Π΅ΡΠΆΠ°Π²Π΅ΡΡΠ΅ΠΉ ΡΡΠ°Π»ΠΈ Π² ΡΠΎΡΡΠ°Π² ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΏΡΠΈΠ²Π½ΠΎΡΡΡΡΡ Π»Π΅Π³ΠΈΡΡΡΡΠΈΠ΅ ΡΠ»Π΅ΠΌΠ΅Π½ΡΡ ΠΏΡΠΎΠ²ΠΎΠ»ΠΎΡΠ½ΠΎΠ³ΠΎ Π²ΠΎΡΡΠ°, ΡΠ°ΠΊΠΈΠ΅ ΠΊΠ°ΠΊ Ρ
ΡΠΎΠΌ ΠΈ Π½ΠΈΠΊΠ΅Π»Ρ. Π’Π°ΠΊ, Π² ΡΠ»ΡΡΠ°Π΅ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ ΡΠ΅ΡΠΎΠΊ Ρ ΠΏΡΠΎΠ²ΠΎΠ»ΠΎΡΠ½ΡΠΌ Π²ΠΎΡΡΠΎΠΌ ΠΈΠ· Π½Π΅ΡΠΆΠ°Π²Π΅ΡΡΠ΅ΠΉ ΡΡΠ°Π»ΠΈ 03Π₯17Π14Π2 ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²ΠΎ Ρ
ΡΠΎΠΌΠ° ΠΈ Π½ΠΈΠΊΠ΅Π»Ρ Π² ΠΏΠ»Π°ΠΊΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΌ ΡΠ»ΠΎΠ΅ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΏΠΎ ΠΏΡΠΎΡΠ΅Π½ΡΠ½ΠΎΠΌΡ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ Π² 5,3 ΠΈ 9,6 ΡΠ°Π·Π° Π±ΠΎΠ»ΡΡΠ΅, ΡΠ΅ΠΌ Π² ΠΏΠΎΠΊΡΡΡΠΈΠΈ, ΡΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΌ ΡΠ΅ΡΠΊΠΎΠΉ ΠΈΠ· ΡΡΠ°Π»ΠΈ 65Π, ΡΡΠΎ ΠΌΠΎΠΆΠ΅Ρ ΡΠΏΠΎΡΠΎΠ±ΡΡΠ²ΠΎΠ²Π°ΡΡ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΡ ΠΊΠΎΡΡΠΎΠ·ΠΈΠΎΠ½Π½ΠΎΠΉ ΡΡΠΎΠΉΠΊΠΎΡΡΠΈ ΠΏΠΎΠΊΡΡΡΠΈΠΉ. ΠΡΠΈ ΡΡΠΎΠΌ ΡΠ΅Π»ΡΠ΅Ρ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ ΠΏΠΎΠΊΡΡΡΠΈΡ ΠΈΠΌΠ΅Π΅Ρ ΡΠ°Π·Π²ΠΈΡΡΡ ΡΠ΅ΡΠΎΡ
ΠΎΠ²Π°ΡΡΡ ΡΡΡΡΠΊΡΡΡΡ, ΡΠΎΡΡΠΎΡΡΡΡ ΠΈΠ· ΠΏΠ»ΠΎΡΠ½ΠΎ ΡΠ»ΠΎΠΆΠ΅Π½Π½ΡΡ
ΠΈ Π²ΡΡΡΠ½ΡΡΡΡ
Π² Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠΈ Π²ΡΠ°ΡΠ΅Π½ΠΈΡ ΡΠ΅ΡΠΊΠΈ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΏΠΎ ΡΠ°Π·ΠΌΠ΅ΡΠ°ΠΌ ΠΌΠΈΠΊΡΠΎΡΠ°ΡΡΠΈΡ Ρ
ΡΠΎΠΌΠ°, Π° ΡΠ°ΠΊΠΆΠ΅ ΡΠ³Π»Π°ΠΆΠ΅Π½Π½ΡΡ
ΠΌΠΈΠΊΡΠΎΠ²ΡΡΡΡΠΏΠΎΠ² ΠΈ ΠΌΠΈΠΊΡΠΎΡΠ³Π»ΡΠ±Π»Π΅Π½ΠΈΠΉ, Π΄Π΅ΡΠ΅ΠΊΡΡ ΠΏΠΎΠΊΡΡΡΠΈΡ Π² Π²ΠΈΠ΄Π΅ Π½Π΅ΡΠΏΠ»ΠΎΡΠ½ΠΎΡΡΠ΅ΠΉ ΠΈ ΠΎΡΡΠ»ΠΎΠ΅Π½ΠΈΠΉ ΠΎΡΡΡΡΡΡΠ²ΡΡΡ. Π’ΡΠΈΠ±ΠΎΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈΡΠΏΡΡΠ°Π½ΠΈΡ Π²ΡΠΏΠΎΠ»Π½ΡΠ»ΠΈΡΡ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
Β«Π³ΡΠ°Π½ΠΈΡΠ½ΠΎΠΉ ΡΠΌΠ°Π·ΠΊΠΈΒ» Π½Π° ΠΌΠ°ΡΠΈΠ½Π΅ ΡΡΠ΅Π½ΠΈΡ Π²ΡΠ°ΡΠ°ΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠΈΠΏΠ°, ΡΠ΅Π°Π»ΠΈΠ·ΡΡΡΠ΅ΠΉ ΡΡΠ΅Π½ΠΈΠ΅ ΡΠ΅Π·ΠΈΠ½ΠΎΠ²ΠΎΠ³ΠΎ ΠΈΠ½Π΄Π΅Π½ΡΠΎΡΠ° ΠΏΠΎ ΠΏΠ»ΠΎΡΠΊΠΎΠΉ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ Π²ΡΠ°ΡΠ°ΡΡΠ΅Π³ΠΎΡΡ Π΄ΠΈΡΠΊΠ°. ΠΠΎ Π΄Π°Π½Π½ΡΠΌ ΡΡΠΈΠ±ΠΎΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈΡΠΏΡΡΠ°Π½ΠΈΠΉ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
Β«Π³ΡΠ°Π½ΠΈΡΠ½ΠΎΠ³ΠΎ ΡΡΠ΅Π½ΠΈΡΒ» ΡΠΏΠ°ΡΠ΅Π½Π½ΡΡ
ΠΎΠ±ΡΠ°Π·ΡΠΎΠ² Β«Π΄ΠΈΡΠΊ Ρ ΠΏΠΎΠΊΡΡΡΠΈΠ΅ΠΌ β ΡΠ΅Π·ΠΈΠ½ΠΎΠ²ΡΠΉ ΡΠΎΠ»ΠΈΠΊΒ» Π½Π°ΠΈΠΌΠ΅Π½ΡΡΠΈΠΌΠΈ Π·Π½Π°ΡΠ΅Π½ΠΈΡΠΌΠΈ Π²Π΅Π»ΠΈΡΠΈΠ½ ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΠ° ΡΡΠ΅Π½ΠΈΡ ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ (fΡΡΒ = 0,023) ΠΎΠ±Π»Π°Π΄Π°ΡΡ Ρ
ΡΠΎΠΌΠΎΠ²ΡΠ΅ ΠΏΠΎΠΊΡΡΡΠΈΡ, ΡΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΠΠΠΠ, ΠΊΠΎΡΠΎΡΡΠ΅ Π² 7,5 ΡΠ°Π·Π° ΠΌΠ΅Π½ΡΡΠ΅, ΡΠ΅ΠΌ Ρ Ρ
ΡΠΎΠΌΠΎΠ²ΡΡ
, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
Π³Π°Π»ΡΠ²Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΎΡΠ°ΠΆΠ΄Π΅Π½ΠΈΠ΅ΠΌ. Π ΡΠΎ ΠΆΠ΅ Π²ΡΠ΅ΠΌΡ ΠΈΠ·Π½ΠΎΡ ΡΠ΅Π·ΠΈΠ½ΠΎΠ²ΡΡ
ΡΠΎΠ»ΠΈΠΊΠΎΠ² Π² ΠΏΠ°ΡΠ°Ρ
Ρ Π³Π°Π»ΡΠ²Π°Π½ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ Ρ
ΡΠΎΠΌΠΎΠ²ΡΠΌΠΈ ΠΏΠΎΠΊΡΡΡΠΈΡΠΌΠΈ ΠΎΠΊΠ°Π·ΡΠ²Π°Π»ΡΡ ΠΌΠ΅Π½ΡΡΠΈΠΌ, ΡΠ΅ΠΌ Π² ΠΏΠ°ΡΠ°Ρ
Ρ ΠΏΠΎΠΊΡΡΡΠΈΠ΅ΠΌ, ΡΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½Π½ΡΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΠΠΠΠ
The role of urokinase, T-cadherin and adiponetin in the development of endogenous depressive disorders
Purpose of the study To determine the role of genes that regulate the processes of nerve cell migration and directed growth of nerve fibers of navigation receptors (PLAUR and CDH13) or their ligands (PLAU, PLAT, ADIPOQ) in the development of endogenous depression and schizophrenia in the Russian population.Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ β ΠΎΠΏΡΠ΅Π΄Π΅Π»ΠΈΡΡ ΡΠΎΠ»Ρ Π³Π΅Π½ΠΎΠ², ΡΠ΅Π³ΡΠ»ΠΈΡΡΡΡΠΈΡ
ΠΏΡΠΎΡΠ΅ΡΡΡ ΠΌΠΈΠ³ΡΠ°ΡΠΈΠΈ Π½Π΅ΡΠ²Π½ΡΡ
ΠΊΠ»Π΅ΡΠΎΠΊ ΠΈ Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½Π½ΠΎΠ³ΠΎ ΡΠΎΡΡΠ° Π½Π΅ΡΠ²Π½ΡΡ
Π²ΠΎΠ»ΠΎΠΊΠΎΠ½ Π½Π°Π²ΠΈΠ³Π°ΡΠΈΠΎΠ½Π½ΡΡ
ΡΠ΅ΡΠ΅ΠΏΡΠΎΡΠΎΠ² (PLAUR ΠΈ CDH13) ΠΈΠ»ΠΈ ΠΈΡ
Π»ΠΈΠ³Π°Π½Π΄ΠΎΠ² (PLAU, PLAT, ADIPOQ) Π² ΡΠ°Π·Π²ΠΈΡΠΈΠΈ ΡΠ½Π΄ΠΎΠ³Π΅Π½Π½ΠΎΠΉ Π΄Π΅ΠΏΡΠ΅ΡΡΠΈΠΈ ΠΈ ΡΠΈΠ·ΠΎΡΡΠ΅Π½ΠΈΠΈ Π² ΡΠΎΡΡΠΈΠΉΡΠΊΠΎΠΉ ΠΏΠΎΠΏΡΠ»ΡΡΠΈΠΈ
ΠΠΠΠΠΠΠ’Π ΠΠ§ΠΠ‘ΠΠΠ Π₯ΠΠ ΠΠΠ’ΠΠ ΠΠ‘Π’ΠΠΠ ΠΠΠΠΠΠ ΠΠ‘Π’ΠΠΠΠΠ TlGaS2, ΠΠΠΠΠ ΠΠΠΠΠΠ«Π₯ Π‘ΠΎ ΠΈ Yb
Electrical conductivity and dielectric properties of TlGaS2, TlGa0,999Yb0,001S2 and TlGa0,99 Co0,01S2 Β single crystals are investigated in the temperature range 150β320 K at the measuring field frequencies of 103 β106 Hz. The values of generalized activation energy of charge carriers in these crystals are determined. It is shown that the absolute values of the characteristics studied increase with temperature. The temperature dependences of the dielectric constant of these crystals have revealed the anomalies in the form of wide peaks, indicating the presence of their structural changes at temperatures ~ 170β250 K. The dispersion of the dielectric properties of the single crystals under study is seen: with a frequency growth the dielectric constant values decrease, and electrical conductivity values increase. It is found that the cobalt and ytterbium doping of TlGaS2 crystals decrease permittivity values and increase electrical conductivity values.ΠΡΠΎΠ²Π΅Π΄Π΅Π½Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠ»Π΅ΠΊΡΡΠΎΠΏΡΠΎΠ²ΠΎΠ΄Π½ΠΎΡΡΠΈ ΠΈ Π΄ΠΈΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΠΌΠΎΠ½ΠΎΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ² TlGaS2, TlGa0,999Yb0,001S2 ΠΈ TlGa0,99 Co0,01S2 Π² ΠΈΠ½ΡΠ΅ΡΠ²Π°Π»Π΅ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡ 150β320 Π Π½Π° ΡΠ°ΡΡΠΎΡΠ°Ρ
ΠΈΠ·ΠΌΠ΅ΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠ»Ρ 103 β106 ΠΡ. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ Π·Π½Π°ΡΠ΅Π½ΠΈΡ ΠΎΠ±ΠΎΠ±ΡΠ΅Π½Π½ΠΎΠΉ ΡΠ½Π΅ΡΠ³ΠΈΠΈ Π°ΠΊΡΠΈΠ²Π°ΡΠΈΠΈ ΠΎΡΠ½ΠΎΠ²Π½ΡΡ
Π½ΠΎΡΠΈΡΠ΅Π»Π΅ΠΉ Π·Π°ΡΡΠ΄Π° Π² ΡΡΠΈΡ
ΠΊΡΠΈΡΡΠ°Π»Π»Π°Ρ
. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ Π°Π±ΡΠΎΠ»ΡΡΠ½ΡΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΡ ΠΈΠ·ΡΡΠ΅Π½Π½ΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ Π²ΠΎΠ·ΡΠ°ΡΡΠ°ΡΡ ΠΏΡΠΈ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠΈ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΡ. ΠΠ° ΠΊΡΠΈΠ²ΡΡ
ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ Π΄ΠΈΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠΎΠ½ΠΈΡΠ°Π΅ΠΌΠΎΡΡΠΈ ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΠΌΡΡ
ΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ² ΠΎΠ±Π½Π°ΡΡΠΆΠ΅Π½Ρ Π°Π½ΠΎΠΌΠ°Π»ΠΈΠΈ Π² Π²ΠΈΠ΄Π΅ ΡΠΈΡΠΎΠΊΠΈΡ
ΠΌΠ°ΠΊΡΠΈΠΌΡΠΌΠΎΠ², ΡΠ²ΠΈΠ΄Π΅ΡΠ΅Π»ΡΡΡΠ²ΡΡΡΠΈΠ΅ ΠΎ Π½Π°Π»ΠΈΡΠΈΠΈ ΡΡΡΡΠΊΡΡΡΠ½ΡΡ
ΠΏΡΠ΅Π²ΡΠ°ΡΠ΅Π½ΠΈΠΉ Π² Π½ΠΈΡ
Π² ΠΎΠ±Π»Π°ΡΡΠΈ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡ ~ 170β250 Π. ΠΡΡΠ²Π»Π΅Π½Π° Π΄ΠΈΡΠΏΠ΅ΡΡΠΈΡ Π΄ΠΈΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Π½ΡΡ
ΠΌΠΎΠ½ΠΎΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ²: Ρ ΡΠΎΡΡΠΎΠΌ ΡΠ°ΡΡΠΎΡΡ Π·Π½Π°ΡΠ΅Π½ΠΈΡ Π΄ΠΈΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠΎΠ½ΠΈΡΠ°Π΅ΠΌΠΎΡΡΠΈ ΡΠΌΠ΅Π½ΡΡΠ°ΡΡΡΡ, Π° ΡΠ΄Π΅Π»ΡΠ½ΠΎΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠΏΡΠΎΠ²ΠΎΠ΄Π½ΠΎΡΡΠΈ β ΡΠ²Π΅Π»ΠΈΡΠΈΠ²Π°ΡΡΡΡ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ Π»Π΅Π³ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ² TlGaS2 ΠΊΠΎΠ±Π°Π»ΡΡΠΎΠΌ ΠΈ ΠΈΡΡΠ΅ΡΠ±ΠΈΠ΅ΠΌ ΠΏΡΠΈΠ²ΠΎΠ΄ΠΈΡ ΠΊ ΡΠΌΠ΅Π½ΡΡΠ΅Π½ΠΈΡ Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ Π΄ΠΈΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠΎΠ½ΠΈΡΠ°Π΅ΠΌΠΎΡΡΠΈ ΠΈ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠΏΡΠΎΠ²ΠΎΠ΄Π½ΠΎΡΡΠΈ
Photodynamic therapy-generated vaccines: relevance of tumour cell death expression
Recent investigations have established that tumour cells treated in vitro by photodynamic therapy (PDT) can be used for generating potent vaccines against cancers of the same origin. In the present study, cancer vaccines were prepared by treating mouse SCCVII squamous cell carcinoma cells with photosensitiser chlorin e6-based PDT and used against poorly immunogenic SCCVII tumours growing in syngeneic immunocompetent mice. The vaccine potency increased when cells were post-incubated in culture after PDT treatment for 16βh before they were injected into tumour-bearing mice. Interfering with surface expression of phosphatidylserine (annexin V treatment) and apoptosis (caspase inhibitor treatment) demonstrated that this post-incubation effect is affiliated with the expression of changes associated with vaccine cell death. The cured mice acquired resistance to re-challenge with the same tumour, while the engagement of cytotoxic T lymphocytes was demonstrated by detection of high numbers of degranulating CD8+ cells in vaccinated tumours. The vaccines prepared from ex vivo PDT-treated SCCVII tumour tissue were also highly effective, implying that surgically removed tumour tissue can be directly used for PDT vaccines. This opens attractive prospects for employing PDT vaccines tailored for individual patients targeting specific antigens of the patient's tumour
Pharmacological Effects of Asiatic acid in Glioblastoma Cells under Hypoxia
Glioblastoma multiforme (GBM) is the most common and malignant primary brain tumor in adults. Despite current treatment options including surgery followed by radiation and chemotherapy with temozolomide (TMZ) and cisplatin, the median survival rate remains low (<16 months). Combined with increasing drug resistance and the inability of some compounds to cross the blood brain barrier (BBB), novel compounds are being sought for the treatment of this disease. Here, we aimed to examine the pharmacological effect of Asiatic acid (AA) in glioblastoma under hypoxia.
To investigate the effects of AA on cell viability, proliferation, apoptosis and wound healing, SVG p12 fetal glia and U87-MG grade IV glioblastoma cells were cultured under normoxic (21% O2) and hypoxic (1% O2) conditions.
In normoxia, AA reduced cell viability in U87-MG cells in a time and concentration-dependent manner. A significant decrease in viability, compared to cisplatin, was observed following 2hrs of AA treatment with no significant changes in cell proliferation or cell cycle progression observed. Under hypoxia, a significantly greater number of cells underwent apoptosis in comparison to cisplatin. While cisplatin showed a reduction in wound healing in normoxia, a significantly greater reduction was observed following AA treatment. An overall reduction in wound healing was observed under hypoxia.
The results of this study show that AA has cytotoxic effects on glioma cell lines and has the potential to become an alternative treatment for glioblastoma
ΠΠ΅Π³ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ°ΡΠΏΠ»Π°Π²Π° ΠΏΠΎΠ΄ΡΠΈΠΏΠ½ΠΈΠΊΠΎΠ² ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π±Π°Π±Π±ΠΈΡΠ°
Abstract. A device design is proposed that makes it possible to obtain composite castings of sliding bearings based on babbitt by mixing alloying additives from antifriction powders of solid lubricants (graphite, molybdenum disulfide, etc.) into the melt, having a density significantly lower than the density of babbitt itself.Β The principle of mixing is based on the use of Β numerous turbulent flows resulting from the rotation of a gating rod with a wire pile in the melt material, the packing density coefficient of which is not less than 0.1. Due to the suction effect of these flows, non-metallic particles of solid lubricant powder do not float to the surface of the melt and, after crystallization, remain in the body of the casting. The supply of alloying powder of solid lubricant is carried out simultaneously with the supply ofΒ the babbitt melt through the central and distribution gating channels made in a rotating rod. Under the action of centrifugal forces, powder particles and melt material flow through distribution channels to the walls of the mold (mold), passing through the rotation zone of the metal pile. In this case, intensive mixing of the powder particles with the melt material occurs due to the suction effect of turbulent flows arising behind the moving pile. In addition, as a result of the rotation of the wire pile, dendritic constituents are crushed in babbitt castings. Β Metallographic studies of the castings obtained on the developed device have shown that the structure of the casting obtained by traditional technology contains large quantities of solid crystals of intermetallic compounds SnSb and Cu3Sn, while in the structure of the casting obtained using the proposed device, along with the aforementioned intermetallic compounds, particles of solid lubricant C + MoS2 powder embedded in the crystallized melt are observed.Β ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π° ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΡ ΡΡΡΡΠΎΠΉΡΡΠ²Π°, ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°ΡΡΠ΅Π³ΠΎ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΠΎΠ½Π½ΡΡ
ΠΎΡΠ»ΠΈΠ²ΠΎΠΊ ΠΏΠΎΠ΄ΡΠΈΠΏΠ½ΠΈΠΊΠΎΠ² ΡΠΊΠΎΠ»ΡΠΆΠ΅Π½ΠΈΡ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ Π±Π°Π±Π±ΠΈΡΠ° ΠΏΡΡΠ΅ΠΌ Π·Π°ΠΌΠ΅ΡΠΈΠ²Π°Π½ΠΈΡ Π² ΡΠ°ΡΠΏΠ»Π°Π² Π»Π΅Π³ΠΈΡΡΡΡΠΈΡ
Π΄ΠΎΠ±Π°Π²ΠΎΠΊ ΠΈΠ· Π°Π½ΡΠΈΡΡΠΈΠΊΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΠΎΡΠΎΡΠΊΠΎΠ² ΡΠ²Π΅ΡΠ΄ΠΎΠΉ ΡΠΌΠ°Π·ΠΊΠΈ (Π³ΡΠ°ΡΠΈΡΠ°, Π΄ΠΈΡΡΠ»ΡΡΠΈΠ΄Π° ΠΌΠΎΠ»ΠΈΠ±Π΄Π΅Π½Π° ΠΈ Π΄Ρ.), ΠΎΠ±Π»Π°Π΄Π°ΡΡΠΈΡ
ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΡΡ, Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ ΠΌΠ΅Π½ΡΡΠ΅ΠΉ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΡΡ ΡΠ°ΠΌΠΎΠ³ΠΎ Π±Π°Π±Π±ΠΈΡΠ°. ΠΡΠΈΠ½ΡΠΈΠΏ Π·Π°ΠΌΠ΅ΡΠΈΠ²Π°Π½ΠΈΡ ΠΎΡΠ½ΠΎΠ²Π°Π½ Π½Π° ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ ΠΌΠ½ΠΎΠ³ΠΎΡΠΈΡΠ»Π΅Π½Π½ΡΡ
ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΡΡ
ΠΏΠΎΡΠΎΠΊΠΎΠ², Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡΡΠΈΡ
Π²ΡΠ»Π΅Π΄ΡΡΠ²ΠΈΠ΅ Π²ΡΠ°ΡΠ΅Π½ΠΈΡ Π² ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π΅ ΡΠ°ΡΠΏΠ»Π°Π²Π° Π»ΠΈΡΠ½ΠΈΠΊΠΎΠ²ΠΎΠ³ΠΎ ΡΡΠ΅ΡΠΆΠ½Ρ Ρ ΠΏΡΠΎΠ²ΠΎΠ»ΠΎΡΠ½ΡΠΌ Π²ΠΎΡΡΠΎΠΌ, ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½Ρ ΠΏΠ»ΠΎΡΠ½ΠΎΡΡΠΈ Π½Π°Π±ΠΈΠ²ΠΊΠΈ ΠΊΠΎΡΠΎΡΠΎΠ³ΠΎ Π½Π΅ ΠΌΠ΅Π½Π΅Π΅ 0,1. ΠΠ»Π°Π³ΠΎΠ΄Π°ΡΡ Π²ΡΠ°ΡΡΠ²Π°ΡΡΠ΅ΠΌΡ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΡΡΠΈΡ
ΠΏΠΎΡΠΎΠΊΠΎΠ² Π½Π΅ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ°ΡΡΠΈΡΡ ΠΏΠΎΡΠΎΡΠΊΠ° ΡΠ²Π΅ΡΠ΄ΠΎΠΉ ΡΠΌΠ°Π·ΠΊΠΈ Π½Π΅ Π²ΡΠΏΠ»ΡΠ²Π°ΡΡ Π½Π° ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΡ ΡΠ°ΡΠΏΠ»Π°Π²Π° ΠΈ ΠΏΠΎΡΠ»Π΅ Π΅Π³ΠΎ ΠΊΡΠΈΡΡΠ°Π»Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΎΡΡΠ°ΡΡΡΡ Π² ΡΠ΅Π»Π΅ ΠΎΡΠ»ΠΈΠ²ΠΊΠΈ. ΠΠΎΠ΄Π°ΡΠ° Π»Π΅Π³ΠΈΡΡΡΡΠ΅Π³ΠΎ ΠΏΠΎΡΠΎΡΠΊΠ° ΡΠ²Π΅ΡΠ΄ΠΎΠΉ ΡΠΌΠ°Π·ΠΊΠΈ ΠΎΡΡΡΠ΅ΡΡΠ²Π»ΡΠ΅ΡΡΡ ΠΎΠ΄Π½ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎ Ρ ΠΏΠΎΠ΄Π°ΡΠ΅ΠΉ ΡΠ°ΡΠΏΠ»Π°Π²Π° Π±Π°Π±Π±ΠΈΡΠ° ΡΠ΅ΡΠ΅Π· ΡΠ΅Π½ΡΡΠ°Π»ΡΠ½ΡΠΉ ΠΈ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»ΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ Π»ΠΈΡΠ½ΠΈΠΊΠΎΠ²ΡΠ΅ ΠΊΠ°Π½Π°Π»Ρ, Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π½ΡΠ΅ Π²ΠΎ Π²ΡΠ°ΡΠ°ΡΡΠ΅ΠΌΡΡ ΡΡΠ΅ΡΠΆΠ½Π΅. ΠΠΎΠ΄ Π΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ΠΌ ΡΠ΅Π½ΡΡΠΎΠ±Π΅ΠΆΠ½ΡΡ
ΡΠΈΠ» ΡΠ°ΡΡΠΈΡΡ ΠΏΠΎΡΠΎΡΠΊΠ° ΠΈ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π» ΡΠ°ΡΠΏΠ»Π°Π²Π° ΡΠ΅ΡΠ΅Π· ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»ΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ ΠΊΠ°Π½Π°Π»Ρ Π²ΡΡΠ΅ΠΊΠ°ΡΡ ΠΊ ΡΡΠ΅Π½ΠΊΠ°ΠΌ ΠΈΠ·Π»ΠΎΠΆΠ½ΠΈΡΡ (ΡΠΎΡΠΌΡ), ΠΏΡΠΎΡ
ΠΎΠ΄Ρ ΡΠ΅ΡΠ΅Π· Π·ΠΎΠ½Ρ Π²ΡΠ°ΡΠ΅Π½ΠΈΡ ΠΌΠ΅ΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²ΠΎΡΡΠ°. ΠΡΠΈ ΡΡΠΎΠΌ Π±Π»Π°Π³ΠΎΠ΄Π°ΡΡ Π²ΡΠ°ΡΡΠ²Π°ΡΡΠ΅ΠΌΡ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΡΡΡΠ±ΡΠ»Π΅Π½ΡΠ½ΡΡ
ΠΏΠΎΡΠΎΠΊΠΎΠ², Π²ΠΎΠ·Π½ΠΈΠΊΠ°ΡΡΠΈΡ
Π·Π° Π΄Π²ΠΈΠΆΡΡΠΈΠΌΡΡ Π²ΠΎΡΡΠΎΠΌ, ΠΏΡΠΎΠΈΡΡ
ΠΎΠ΄ΠΈΡ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎΠ΅ ΡΠΌΠ΅ΡΠΈΠ²Π°Π½ΠΈΠ΅ ΡΠ°ΡΡΠΈΡ ΠΏΠΎΡΠΎΡΠΊΠ° Ρ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»ΠΎΠΌ ΡΠ°ΡΠΏΠ»Π°Π²Π°. ΠΡΠΎΠΌΠ΅ ΡΠΎΠ³ΠΎ, Π² ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ Π²ΡΠ°ΡΠ΅Π½ΠΈΡ ΠΏΡΠΎΠ²ΠΎΠ»ΠΎΡΠ½ΠΎΠ³ΠΎ Π²ΠΎΡΡΠ° ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°Π΅ΡΡΡ ΠΈΠ·ΠΌΠ΅Π»ΡΡΠ΅Π½ΠΈΠ΅ Π΄Π΅Π½Π΄ΡΠΈΡΠ½ΡΡ
ΡΠΎΡΡΠ°Π²Π»ΡΡΡΠΈΡ
Π² ΠΎΡΠ»ΠΈΠ²ΠΊΠ°Ρ
ΠΈΠ· Π±Π°Π±Π±ΠΈΡΠ°. ΠΠ΅ΡΠ°Π»Π»ΠΎΠ³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΠΌΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
Π½Π° ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½ΠΎΠΌ ΡΡΡΡΠΎΠΉΡΡΠ²Π΅ ΠΎΡΠ»ΠΈΠ²ΠΎΠΊ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ Π² ΡΡΡΡΠΊΡΡΡΠ΅ ΠΎΡΠ»ΠΈΠ²ΠΊΠΈ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΠΎΠΉ ΠΏΠΎ ΡΡΠ°Π΄ΠΈΡΠΈΠΎΠ½Π½ΠΎΠΉ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ, Π² Π±ΠΎΠ»ΡΡΠΎΠΌ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅ ΡΠΎΠ΄Π΅ΡΠΆΠ°ΡΡΡ ΡΠ²Π΅ΡΠ΄ΡΠ΅ ΠΊΡΠΈΡΡΠ°Π»Π»Ρ ΠΈΠ½ΡΠ΅ΡΠΌΠ΅ΡΠ°Π»Π»ΠΈΠ΄Π½ΡΡ
ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠΉ SnSb ΠΈ Cu3Sn, Π² ΡΠΎ Π²ΡΠ΅ΠΌΡ ΠΊΠ°ΠΊ Π² ΡΡΡΡΠΊΡΡΡΠ΅ ΠΎΡΠ»ΠΈΠ²ΠΊΠΈ, ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΠΎΠΉ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ ΡΡΡΡΠΎΠΉΡΡΠ²Π°, Π½Π°ΡΡΠ΄Ρ Ρ Π²ΡΡΠ΅ΡΠΏΠΎΠΌΡΠ½ΡΡΡΠΌΠΈ ΠΈΠ½ΡΠ΅ΡΠΌΠ΅ΡΠ°Π»Π»ΠΈΠ΄Π½ΡΠΌΠΈ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡΠΌΠΈ, Π½Π°Π±Π»ΡΠ΄Π°ΡΡΡΡ Π²Π½Π΅Π΄ΡΠ΅Π½Π½ΡΠ΅ Π² Π·Π°ΠΊΡΠΈΡΡΠ°Π»Π»ΠΈΠ·ΠΎΠ²Π°Π²ΡΠΈΠΉΡΡ ΡΠ°ΡΠΏΠ»Π°Π² ΡΠ°ΡΡΠΈΡΡ ΠΏΠΎΡΠΎΡΠΊΠ° ΡΠ²Π΅ΡΠ΄ΠΎΠΉ ΡΠΌΠ°Π·ΠΊΠΈ CΒ +Β MoS2
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