TECHNOLOGICAL ASPECTS OF OBTAINING FRIT OF HEAT-RESISTANT ENAMEL FOR THE PROTECTION OF CORROSION-RESISTANT STEELS

2021 ◽  
pp. 43-49
Author(s):  
A.V. Zakalashnyy ◽  
◽  
V.S. Denisova ◽  
O.V. Vlasova ◽  
S.S. Solntsev ◽  
...  
Keyword(s):  
Manganese Oxide ◽  
Corrosion Resistant ◽  
Temperature Range ◽  
Heat Resistant ◽  
Complete Exclusion ◽  
Active Release ◽  
Sufficient Reduction

The technological aspects of producing frit based are studied for heat-resistant enamel EV-300-60M in experimental industrial conditions. It was found that in the temperature range of 1200–1250 °C, intensive foaming of the charge occurs due to the active release of oxygen by manganese oxide. Due to the combination of technological operations, it is possible to ensure a sufficient reduction, but not complete exclusion of foaming when cooking frit. In this regard, the further direction of work on improving heat-resistant enamels for the protection of corrosion-resistant steels determines the need to develop a technological composition of frit.

Corrosion-resistant composite germanium-based alloys coatings

2019 ◽  
pp. 103-109
Author(s):  
A. F. Vasiliev ◽  
E. A. Samodelkin ◽  
E. Yu. Geraschenkova ◽  
B. V. Farmakovsky
Keyword(s):  
Thermal Cycling ◽  
Adhesive Strength ◽  
Corrosion Resistant ◽  
Temperature Range ◽  
Powder Composition ◽  
High Adhesive Strength

The results of complex studies on the development of a powder composition Ge–Cr–Zr–Ce–WC, promising for the production of functional cold-resistant coatings by microplasma sputtering, are presented. The coating has high adhesive strength (more than 40 MPa) and microhardness (up to 10–12 GPa) and withstands repeated thermal cycling in the temperature range from –60 to 20°С.

A heat-resistant preceramic polymer with broad working temperature range for silicon carbide joining

2018 ◽  
Vol 38 (1) ◽  
pp. 67-74 ◽  
Author(s):  
Bo Tang ◽  
Mingchao Wang ◽  
Ruiming Liu ◽  
Jiachen Liu ◽  
Haiyan Du ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Preceramic Polymer ◽  
Temperature Range ◽  
Working Temperature ◽  
Heat Resistant

scholarly journals Thermal diffusivity of corrosion-resistant coating SDP-1

2021 ◽  
Vol 2119 (1) ◽  
pp. 012145
Author(s):  
A Sh Agazhanov ◽  
D A Samoshkin ◽  
S V Stankus
Keyword(s):  
Thermal Diffusivity ◽  
Wide Temperature Range ◽  
Laser Flash ◽  
Flash Method ◽  
Corrosion Resistant ◽  
Practical Applications ◽  
Temperature Range ◽  
Resistant Coating ◽  
Heat Resistant Coating ◽  
Corrosion Resistant Coating

Abstract In the present work, the thermal diffusivity of the SDP-1 grade nickel alloy was investigated in the wide temperature range of 300-1476 K. The SDP-1 alloy (Ni-Co-Cr-Al-Y) is the heat-resistant coating for blades of gas turbine plants, providing protection against sulfide-oxide corrosion in the temperature range of 1070-1220 K. The measurements were performed by laser flash method using LFA-427 apparatus. The estimated errors of the obtained data were 2-5% depending on temperature. The thermal diffusivity approximation equations and a table of reference values for various scientific and practical applications were obtained.

Optimization of the Composition and Structure of Deformable Heat Resistant Aluminum Alloy

2019 ◽  
Vol 946 ◽  
pp. 156-161
Author(s):  
Ainagul Toleuova ◽  
Bakhyt Balbekova ◽  
Irina Erakhtina
Keyword(s):  
Phase Diagram ◽  
Aluminum Alloys ◽  
Computer Calculation ◽  
Corrosion Resistant ◽  
Heat Resistant ◽  
Composition And Structure ◽  
Polythermal Sections ◽  
Temperatures Of Phase Transformations ◽  
The Cost ◽  
New Generation

The necessity of finding scientifically grounded methods for the development of new heat-resistant, wear-resistant and corrosion-resistant aluminum alloys is presented in the present work. For this purpose, the analysis of modern methods for computer calculation of phase diagrams in multicomponent metal systems using the Thermo-Calc program was carried out. Therefore, a quantitative analysis of the phase diagram the Al-Cu-Mn-Zr system was carried out, as the basis of deformable high-temperature aluminum alloys. Isothermal and polythermal sections of the phase diagram were calculated in this system. The temperatures of phase transformations were calculated. The mass and volume fractions of the phases in the studied alloys were calculated. The range of concentrations and temperatures at which the maximum amount of dispersoids Al20Cu2Mn3 may be achieved, was defined. The minimum amount of Al2Cu phase is calculated, which should correspond to the best heat resistance of alloys. It is substantiated that in the alloys of a new generation of ALTEK type, the use of homogenization and quenching operations is inexpedient, which implies the possibility of a significant reduction in the cost of heat treatment in comparison with industrial alloys, such as 1201.

Development of Technology of Robotized Laser Welding of Thin Wall Products from Heat-Resistant Alloys

2020 ◽  
Vol 992 ◽  
pp. 663-669
Author(s):  
S.E. Krylova ◽  
V.A. Zavyalov ◽  
M.I. Goltapin
Keyword(s):  
Corrosion Resistance ◽  
Comparative Analysis ◽  
Laser Welding ◽  
Intercrystalline Corrosion ◽  
Industrial Technology ◽  
Thin Wall ◽  
Corrosion Resistant ◽  
Surface Corrosion ◽  
Heat Resistant

Results of the developed industrial technology of restoration of a surface corrosion-resistant staly are presented by method of laser building up. The comparative analysis of a microstructure of the built-up wearproof layer, an alloyage zone with material of a basis and diffusive zone at the different technological modes of building up is given. Influence of morphology of particles of additive powder on parametrical characteristics of the roller received by laser gas powder building up is investigated. The optimum modes of building up on a substrate from steel 12Cr18Ni10Ti are set. Tests for firmness against intercrystalline corrosion of the built-up powder compositions are executed by the AM method. Metalgraphic assessment of corrosion resistance is presented.

Structurally stable, corrosion-resistant, heat-resistant alloy 02KhN40MB

1978 ◽  
Vol 20 (11) ◽  
pp. 941-943
Author(s):  
F. L. Levin ◽  
M. Yu. Ustimenko ◽  
B. V. Bychkov ◽  
V. A. Pokladok ◽  
L. F. Samsonova
Keyword(s):  
Corrosion Resistant ◽  
Heat Resistant Alloy ◽  
Resistant Alloy ◽  
Heat Resistant ◽  
Structurally Stable

High Temperature Bonding Effect of the Room-Temperature-Curing Phosphate Adhesive for C/C Composites

2016 ◽  
Vol 680 ◽  
pp. 179-183 ◽  
Author(s):  
Ming Chao Wang ◽  
Meng Meng Zhuang ◽  
Xin Tao ◽  
Xi Qing Xu ◽  
Hai Tao Geng ◽  
...  
Keyword(s):  
Shear Strength ◽  
High Temperature ◽  
Thermal Cycling ◽  
Bonding Strength ◽  
Room Temperature ◽  
Temperature Range ◽  
Heat Resistant ◽  
Bonding Effect ◽  
Temperature Shear

A heat-resistant phosphate adhesive was developed for joining and repairing of C/C composites. The high-temperature bonding effect for both cured adhesive and 1300°C-calcined adhesive had been evaluated through testing high-temperature shear strength of corresponding joints. The results showed that the bonding strength of cured adhesive decreased from 7.9 MPa at RT to 0.9 MPa at 1300°C, while that of 1300°C-calcined adhesive could maintain about 4 MPa at temperature range from RT to 700°C and then decreased to 1.7 MPa at 1300°C. Besides, with the increasing thermal cycling times at 1300°C, the high-temperature bonding strength at this temperature could maintain at about 2.3 MPa.

scholarly journals Manufacturing of corrosion-resistant steel 316L using additive technologies as a way to increase its corrosion resistance

2021 ◽  
Vol 279 ◽  
pp. 01012
Author(s):  
Daria Popkova ◽  
Arkadiy Zhilyakov ◽  
Sergey Belikov ◽  
Alexander Abramov ◽  
Oleg Bazhenov
Keyword(s):  
Corrosion Resistance ◽  
Selective Laser Melting ◽  
Additive Technologies ◽  
Second Phase ◽  
Laser Melting ◽  
Corrosion Properties ◽  
Corrosion Resistant ◽  
Temperature Range ◽  
Second Phases ◽  
Kinetics Of

Austenitic steel 316L is a common corrosion-resistant structural material used in a variety of industries from food to nuclear. There is a well-known tendency of steel 316L to precipitate second phases in the temperature range of 500 ... 800 ° С. During operation in this temperature range, degradation of corrosion properties occurs for a long time. Materials and parts obtained by modern methods of additive technologies are of great interest, since this method of alloys processing affects the thermodynamic equilibrium of the system and the kinetics of the release of second phases in aging alloys. The ability to control the kinetics of second phase formation is one of the key factors for improving the corrosion resistance of alloys. In this work, the effect of the method of steel 316L manufacturing (traditional and selective laser melting) on corrosion resistance at a temperature of 750 ° C for 100 hours in a KCl-NaCl environment was estimated. Corrosion tests were carried out, as a result of which it was found that a sample of 316L steel obtained by the method of selective laser melting has the lowest corrosion rate..

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