Wear-resistant powder materials with intermetallic precipitation hardening II. Wear-resistant porous materials

1987 ◽  
Vol 26 (5) ◽  
pp. 421-424
Author(s):  
G. Kh. Karapetyan ◽  
N. L. Akopov ◽  
F. Kh. Karapetyan ◽  
N. N. Manukyan
Keyword(s):  
Porous Materials ◽  
Precipitation Hardening ◽  
Powder Materials ◽  
Wear Resistant

Wear-resistant powder materials with intermetallic hardening. I. Nonporous materials for antifriction purposes

1987 ◽  
Vol 26 (4) ◽  
pp. 334-338 ◽  
Author(s):  
G. Kh. Karapetyan ◽  
N. L. Akopov ◽  
F. Kh. Karapetyan ◽  
N. N. Manukyan
Keyword(s):  
Powder Materials ◽  
Wear Resistant

Preparation of wear-resistant powder materials based on iron by hot stamping in the presence of a liquid phase

Metallurgist ◽  
2011 ◽  
Vol 55 (3-4) ◽  
pp. 289-295 ◽  
Author(s):  
R. V. Batienkov ◽  
V. Yu. Dorofeev ◽  
Zh. V. Eremeeva ◽  
V. V. Artemov
Keyword(s):  
Liquid Phase ◽  
Hot Stamping ◽  
Powder Materials ◽  
Wear Resistant

scholarly journals Technology for producing wear-resistant bimetal bearing based on cast aluminum

2020 ◽  
Vol 164 ◽  
pp. 03045
Author(s):  
Ruslan Kuznetsov ◽  
Evgeniy Ol’khovik ◽  
Mikhail Radkevich ◽  
Pavel Kuznetsov
Keyword(s):  
Liquid Metal ◽  
Cast Alloy ◽  
Applied Pressure ◽  
Base Material ◽  
Outer Radius ◽  
Powder Materials ◽  
Pressing Pressure ◽  
Cast Aluminum ◽  
Sintered Iron ◽  
Wear Resistant

The paper presents the results of research the new technological process for producing bimetallic materials in the composition of “aluminum cast alloy - sintered iron powder” by the method of joint stamping of liquid metal. The purpose of this research is obtain parts with high wear-resistant properties, special sintered powder materials are used, which have an internal porosity to retain lubricant. However, such materials do not fit well with traditional aluminum alloys. This problem is may be solved by creating new bimetallic alloys, part of which is an outer casing, and the other materials is the functional bearing. To accomplish this task, we conducted a study of a new technology for joint stamping of liquid metal. In order to optimize and increase the reliability of the experiment, the pressing pressure, the pressure holding time, and the tooling temperature of the matrix were taken as quantitative factors. The effect of the applied pressure on the mechanical properties of the base material and the facing layer was determined on a longitudinal section of the obtained samples by the Vickers method. It was revealed that the gradient of increasing hardness is directed to the outer radius of the workpiece, that is, to the opposite crystallization front. The high level of bimetal adhesion is explained by the presence of a uniform moderate zone of mutual solubility, including due to the violation of the porous surface layer of the powder billet.

scholarly journals Optimization of Coating Process from Cermet Powders by Plasma Spraying in Air

2021 ◽  
Vol 20 (5) ◽  
pp. 369-374
Author(s):  
V. A. Okovity ◽  
F. I. Panteleenko ◽  
V. V. Okovity ◽  
V. M. Astashinsky
Keyword(s):  
Plasma Spraying ◽  
Solid Phase ◽  
Protective Coatings ◽  
Composite Coatings ◽  
Polished Surface ◽  
Powder Materials ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Contact Points ◽  
Plasma Coatings

The paper presents studies on the optimization of the process of applying coatings from cermet powders with different solid phase contents by plasma spraying in air to restore and harden parts of machines and mechanisms operating under adverse conditions. Such conditions are usually created in heavily loaded tribojoints when the mechanisms operate at a low speed of relative movement of surfaces during friction. At the same time, the destruction of the working surfaces is mainly due to the process of microcontact setting and subsequent detachment of the formed particles at their contact points. The application of special protective coatings with the required properties is possible with the manufacture of high-quality starting powder materials and optimization of the technology for their application. Such powders and powder compositions can be obtained by the method of agglomeration of a fine powder mixture with its subsequent high-temperature sintering. To identify the hardening mechanism of composite coatings made of cermet by gas-thermal spraying, important stages are the optimization of the deposition process parameters and the study of the properties of plasma coatings obtained in this case. When optimizing the technological parameters of plasma spraying of coatings, the utilization rate of the sprayed powder material has been taken into account as the main indicator of the process efficiency, the structure of the obtained layers, and the morphology of individual particles deposited on the polished surface. The paper provides data on the structural elements of sprayed materials for wear-resistant coatings obtained by plasma spraying at optimal conditions. Taking into account the processes that occur during the wear of tribological conjugations, the data indicate the existing prerequisites for the wear resistance of the studied composite coatings made of metal ceramics. Special wear-resistant coatings made of materials with a soft matrix hardened by solid inclusions Al2O3–TiO2–Ni–Cr–Al–Y are widely used in various industries. Based on the detailed analysis of the features of cermet plasma coatings, it can be stated that such powder compositions (complex oxides-metal component) are often used as wear-resistant plasma coatings. The research results can be taken into account in cases of application of wear-resistant plasma coatings made of metal-ceramics and compositions based on them, containing solid phases in the form of oxides, as well as the manufacture of a whole range of parts operating under conditions of intense wear.

Abrasive Powder Materials with Wear-Resistant and Magnetic Components

2021 ◽  
Vol 57 (10) ◽  
pp. 1092-1096
Author(s):  
M. V. Mikheev ◽  
A. V. Bolotskaya ◽  
A. M. Stolin ◽  
P. M. Bazhin
Keyword(s):  
Powder Materials ◽  
Wear Resistant ◽  
Abrasive Powder ◽  
Magnetic Components

Wear-Resistant Heterophase Fe–Si–B–C Powder Materials

2013 ◽  
Vol 52 (7-8) ◽  
pp. 401-408
Author(s):  
G. A. Baglyuk ◽  
S. G. Napara-Volgina ◽  
V. K. Kud ◽  
L. N. Orlova ◽  
A. D. Kostenko
Keyword(s):  
Powder Materials ◽  
Wear Resistant

Heat treatment and properties of precipitation-hardening wear-resistant alloy 30NKhTYuD

1981 ◽  
Vol 23 (10) ◽  
pp. 694-697
Author(s):  
N. I. Talakin ◽  
Z. V. Pavlova ◽  
Z. V. Shchurkova
Keyword(s):  
Heat Treatment ◽  
Precipitation Hardening ◽  
Wear Resistant ◽  
Resistant Alloy
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