Structural transformations in heat-resistant protective coatings on nickel alloys

1987 ◽  
Vol 29 (4) ◽  
pp. 302-307
Author(s):  
Yu. G. Veksler ◽  
V. P. Lesnikov ◽  
S. Ya. Paleeva ◽  
E. G. Lesnikova ◽  
G. F. Myal'nitsa
Keyword(s):  
Nickel Alloys ◽  
Protective Coatings ◽  
Structural Transformations ◽  
Heat Resistant

Glass Ceramic Protective Coatings for Gasostatic Treatment of Heat-Resistant Nickel Alloys

2015 ◽  
Vol 72 (3-4) ◽  
pp. 100-103
Author(s):  
V. A. Rozenenkova ◽  
S. S. Solntsev ◽  
D. V. Grashchenkov ◽  
N. A. Mironova
Keyword(s):  
Glass Ceramic ◽  
Nickel Alloys ◽  
Protective Coatings ◽  
Heat Resistant

Calculation of plasma centrifugal spraying parameters of fine granules of heat-resistant nickel alloys

2020 ◽  
pp. 471-474
Author(s):  
M.G. Yagodin ◽  
E.I. Starovoytenko
Keyword(s):  
Powder Metallurgy ◽  
Nickel Alloys ◽  
Dynamic Pressure ◽  
Calculated Data ◽  
Powder Size ◽  
Metal Powders ◽  
Heat Resistant ◽  
Gas Dynamic ◽  
Spraying Parameters ◽  
Wide Range

The equipment for the production of wide range of metal powders purposed for powder metallurgy is described. The possibility for producing of powders by the plasma centrifugal spraying is considered taking into account the gas dynamic pressure. The calculated data on the powder size for different materials are given.

PYROLYSIS OF THE LOWER PARAFFINS: V. THE CONVERSION OF THE GASEOUS PARAFFINS TO AROMATICS IN BAFFLED METAL TUBES AND THE CHEMICAL COMPOSITION OF THE PRODUCTS

1934 ◽  
Vol 10 (2) ◽  
pp. 145-163
Author(s):  
Adrien Cambron ◽  
Colin H. Bayley
Keyword(s):  
Chemical Composition ◽  
Turbulent Flow ◽  
Alloy Steel ◽  
Nickel Alloys ◽  
Gas Flow ◽  
Thermal Conversion ◽  
Chemical Methods ◽  
Steel Tubes ◽  
Heat Resistant ◽  
Light Oil

The thermal conversion of propane to aromatics has been investigated by passing the gas through externally heated alloy steel tubes under conditions of turbulent flow. Recycling experiments carried out under pressure have shown that, when the gas flow is turbulent, high rates of conversion can be obtained at temperatures as low as 800–810 °C. Heat resistant chromium-nickel alloys of the 18:8 type have been found unsuitable for this purpose owing to the catalytic formation of carbon. Yields of 23.3 lb. of light oil per 1,000 cu. ft. of propane put through were obtained at 800 °C. together with 10 lb. of liquids boiling above 200 °C. The composition of the liquids obtained in these experiments has been determined by fractionation and chemical methods. The light oil obtained under the above conditions contains about 64% benzene, 14% toluene, 7.8% styrene and small amounts of cyclopentadiene, xylenes and higher aromatics. The liquids boiling above 200 °C. contain about 25% naphthalene and 12.5% anthracene together with smaller amounts of mono- and dimethyl naphthalenes, acenaphthene and phenanthrene.

Effect of high energy ion-implantation treatment on properties of heat-resistant nickel alloys of blades of gas-compressor units

2019 ◽  
Vol 19 ◽  
pp. 2056-2059
Author(s):  
Vadim Viktorovich Nasteka ◽  
Iiskander Rustemovich Kuzeev ◽  
Boris Olegovich Bolshakov ◽  
Askar Dzhamilevich Mingazhev ◽  
Victoria Alexandrovna Gafarova
Keyword(s):  
Ion Implantation ◽  
Nickel Alloys ◽  
High Energy ◽  
Heat Resistant

scholarly journals Study of the Efficiency of Ultrasonic Turning of Heat-Resistant Alloys with Tools from Mineral Ceramics

2019 ◽  
Vol 297 ◽  
pp. 01011
Author(s):  
Nguyen Khanh Toan ◽  
Nikolay Mezin
Keyword(s):  
Nickel Alloys ◽  
High Speed ◽  
Metal Removal ◽  
Ultrasonic Field ◽  
Significant Loss ◽  
Field Energy ◽  
Thermal Processes ◽  
Heat Resistant ◽  
Defective Layer ◽  
Loss Of Strength

The results of the study of the effectiveness of high-speed ultrasonic turning of billets from heat-resistant nickel alloys without coolant are given. It was established that the introduction of ultrasonic field energy into the shaping zone reduces the contact temperature by 10–15% and the cutting force by 20–30%. However, this does not cause a decrease in metal removal performance due to a significant loss of strength and ease of cutting at temperatures above 800 C. As follows from the results, ultrasound helps to reduce the thickness of the defective layer, the formation of which is caused by thermal processes and phase transformations with the appearance of tensile residual stresses in the surface layer.

Sign in / Sign up

Export Citation Format

Share Document