Factors affecting the tribotechnical properties of sintered materials

The article considers the issues of production of powder antifriction materials based on iron by methods of pressing and rolling powder mixtures. The analysis of influence of composition of materials, technological conditions of their production and other factors on the structure, mechanical and tri...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-03, Vol.1111 (1), p.12015
Main Authors: Cherney, O T, Skachkova, E G, Permovskiy, A A, Smirnova, Zh V, Kutepova, L I
Format: Article
Language:English
Subjects:
Alloying effects
Antifriction
Calcium fluoride
Composition
Graphite
Heat treatment
Industrial applications
Iron
Lubricants
Molybdenum disulfide
Phosphorus
Porosity
Sintering (powder metallurgy)
Wear resistance
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Summary:The article considers the issues of production of powder antifriction materials based on iron by methods of pressing and rolling powder mixtures. The analysis of influence of composition of materials, technological conditions of their production and other factors on the structure, mechanical and tribotechnical properties of powder sliding bearings was carried out. During the operation of the machine, its elements, subjected to various influences, change in state, size and properties. The effectiveness of developments in the field of tribotechnical materials is determined by the properties of these materials, as well as the speed and breadth of their industrial use. The effect of porosity of samples on their tribotechnical properties and hardness after sintering and additional heat treatment is studied. The results of tribotechnical tests of iron-copper-graphite sintered sulfided compositions, not alloyed and doped with phosphorus, as well as materials including additional lubricant components: graphite, molybdenum disulfide or calcium fluoride, are presented. On the basis of tests, it was found that in conditions of liquid friction, alloying with phosphorus has a decisive effect on increasing wear resistance, and without supplying lubricant to sintered samples with impregnated oil, wear is more than an order of magnitude higher compared to the conditions of liquid friction.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1111/1/012015