scholarly journals IMPROVEMENT OF THE TECHNOLOGICAL PROCESS OF OBTAINING PROTECTIVE AND DECORATIVE COATINGS

2020 ◽  
Vol 2020 (1) ◽  
pp. 31-32
Author(s):  
Stanislav Dubrovin ◽  
Nina Sosnovskaya ◽  
Nadezhda Dobrynina
Keyword(s):  
Technological Process ◽  
Metal Surfaces ◽  
Multilayer Coating ◽  
Metals And Alloys ◽  
Decorative Coating ◽  
Performance Properties ◽  
Ni Alloy ◽  
Electrochemical Coatings

To improve the performance properties of metal surfaces, not only composite, but also multilayer electrochemical coatings based on various metals and alloys can be used. According to economic calculations, it is found that it is more profitable to use the Sn-Ni alloy as a protective and decorative coating than the Сu-Ni-Cr multilayer coating

scholarly journals Corundum Molds for Investment Casting from Refractory Alloys and Metals

2010 ◽  
Vol 2010 ◽  
pp. 1-5
Author(s):  
P. A. Storozhenko ◽  
G. I. Shcherbakova ◽  
D. V. Sidorov ◽  
M. S. Varfolomeev ◽  
A. S. Murkina
Keyword(s):  
Surface Roughness ◽  
Investment Casting ◽  
High Heat ◽  
Metals And Alloys ◽  
Performance Properties ◽  
Refractory Alloys ◽  
Heat Resistant ◽  
Physical Chemical ◽  
And Performance ◽  
Reactive Metals

Production procedure, physical-chemical, and performance properties of ALUMOX silica-free binder used for the production of high-heat-resistant corundum shell molds by consumable patterns employed in the production of critical molds from superalloyed reactive metals and alloys are described. ALUMOX usage allows obtaining casts from reactive metals and alloys with surface roughness up to  m (basic casts— m), which, in its turn, increases fatigue parameters of the material (endurance, durability).

Large-scale nanopatterning of metal surfaces by target-ion induced plasma sputtering (TIPS)

RSC Advances ◽  
2016 ◽  
Vol 6 (28) ◽  
pp. 23702-23708 ◽  
Author(s):  
Tae-Sik Jang ◽  
Sungwon Kim ◽  
Hyun-Do Jung ◽  
Jin-Wook Chung ◽  
Hyoun-Ee Kim ◽  
...  
Keyword(s):  
Metal Surfaces ◽  
Large Scale ◽  
Low Cost ◽  
Metals And Alloys ◽  
Plasma Sputtering ◽  
One Step ◽  
Self Assembled

Target-ion Induced Plasma Sputtering (TIPS) can produce large-scale, self-assembled nanopatterns on metals and alloys in one step at low cost.

scholarly journals Advantages of Electrochemical Polishing of Metals and Alloys in Ionic Liquids

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 959
Author(s):  
Olga Lebedeva ◽  
Dmitry Kultin ◽  
Alexandre Zakharov ◽  
Leonid Kustov
Keyword(s):  
Stainless Steel ◽  
Ionic Liquids ◽  
Aqueous Solutions ◽  
Metal Surfaces ◽  
Mechanical Treatment ◽  
Electrochemical Stability ◽  
Metals And Alloys ◽  
Electrochemical Polishing ◽  
Special Equipment ◽  
Medical Instruments

Electropolishing of metal surfaces is a benign alternative to mechanical treatment. Ionic liquids are considered as green electrolytes for the electropolishing of metals. They demonstrate a number of advantages in comparison with acid aqueous solutions and other methods of producing smooth or mirror-like surfaces that are required by diverse applications (medical instruments, special equipment, implants and prostheses, etc.). A wide window of electrochemical stability, recyclability, stability and tunability are just a few benefits provided by ionic liquids in the title application. An overview of the literature data on electropolishing of such metals as Ti, Ni, Pt, Cu, Al, U, Sn, Ag, Nb, stainless steel and other alloys in ionic liquids is presented.

scholarly journals PRODUCING OF NEW TYPES, FIRE-PROTECTIVE COATINGS BY THE USE OF HIGH DISPERSED COMPOSITE POWDERS OF LOCAL MINERAL RAW MATERIALS

InterConf ◽  
2021 ◽  
pp. 315-325
Author(s):  
Lali Gurchumelia ◽  
Murman Tsarakhov ◽  
Tengiz Machaladze ◽  
Dali Dzanashvili ◽  
Feliks Bezhanov ◽  
...  
Keyword(s):  
Technological Process ◽  
Flame Retardants ◽  
Building Materials ◽  
Raw Materials ◽  
Protective Coatings ◽  
Mechanical Mixing ◽  
Composite Powders ◽  
Performance Properties ◽  
Mineral Raw Materials ◽  
Environmentally Safe

The aim of this research is the fabrication of new types, environmentally safe, highly efficient and inexpensive fire-protective coatings by the use of high-dispersed composite powders (with high inhibitory properties) of local mineral raw materials, which in fire-protective coatings will play the role as binders as well as efficient inert flame retardants. Fire-protective coating was prepared only by mechanical mixing of binders and fillers, does not require addition of expensive phosphorus and halogen-containing flame retardants. On the one hand it simplifies technological process of production of materials and on the other hand decreases price cost of fire-protective coatings. Polyurethane resins were selected as binders, popularity of which is due to low price and simple technological process of production, high performance properties and low combustion capacity (in comparison with binders, used in series). High-dispersed composite powders of local mineral raw materials: zeolites, perlites, dolomites and clay shales are used as fillers, which are characterized by high inhibition properties and fire-extinguishing ability. Thus, produced coatings will be environmentally safe and much cheaper compared to imported analogues. Due to their performance properties and fire resistance, they will fully meet the requirements set by the normative documentation for building materials. The performance properties of the obtained fire–protective coatings were determined by laboratory standard methods. Thermogravimetric analysis method allows us to study the thermal stability of the material and determine the relative combustion capacity of the material. The effectiveness of the obtained coating was evaluated by the determine the relative combustion capacity - Oxygen Index (OI) and by of studying combustibility of materials. In the course of studying combustibility of materials in an initial stage was established combustible group by the method of "fire tube”- ГОСТ 1708-71.

scholarly journals Dependence of the properties of epoxy foams on the composition

2021 ◽  
pp. 8-10
Author(s):  
M. B. Alikin ◽  
Yu. V. Polyakova ◽  
D. A. Panfilov ◽  
I. M. Dvorko
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Technological Process ◽  
Physical And Mechanical Properties ◽  
Performance Properties ◽  
Wide Range

The features of the technological process of obtaining foams based on epoxy resin are considered. The influence of the concentration of the components of the composition on the physical and mechanical properties and morphology of the resulting materials is studied. The results of the study of the physical and mechanical properties of the developed epoxy foams are presented. The possibility of obtaining foams with a wide range of adjustable performance properties is shown.

scholarly journals THE PROBLEMS OF ENSURING SPECIFIED PERFORMANCE PROPERTIES OF MACHINE PARTS DURING MULTITRANSIENT MACHINING

2021 ◽  
pp. 9-13
Author(s):  
A. A. Zhdanov ◽  
I. V. Firsov ◽  
A. A. Kozhevnikova ◽  
E. V. Kapinosova
Keyword(s):  
Technological Process ◽  
Process Design ◽  
Performance Properties ◽  
Operating Properties ◽  
Machine Parts

The article considers the problems of ensuring the specified operating properties of machine parts during multitransient machining, and more precisely, the discrepancies and errors laid down at the stage of technological process design.

Some Applications of the U. S. Steel MVEM

1973 ◽  
Vol 31 ◽  
pp. 4-5
Author(s):  
J. S. Lally ◽  
L. E. Thomas ◽  
R. M. Fisher
Keyword(s):  
Electron Diffraction ◽  
Debye Temperature ◽  
Metals And Alloys ◽  
Critical Voltage ◽  
Dynamical Diffraction ◽  
Phase Structures ◽  
Structure Factors ◽  
Local Bonding ◽  
Diffraction Phenomenon ◽  
Multi Phase

A variety of materials containing many different microstructures have been examined with the USS MVEM. Three topics have been selected to illustrate some of the more recent studies of diffraction phenomena and defect, grain and multi-phase structures of metals and minerals.(1) Critical Voltage Effects in Metals and Alloys - This many-beam dynamical diffraction phenomenon, in which some Bragg resonances vanish at certain accelerating voltages, Vc, depends sensitively on the spacing of diffracting planes, Debye temperature θD and structure factors. Vc values can be measured to ± 0.5% in the HVEM ana used to obtain improved extinction distances and θD values appropriate to electron diffraction, as well as to probe local bonding effects and composition variations in alloys.

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