Production of piston rings from naturally-alloyed iron powders

1971 ◽  
Vol 10 (6) ◽  
pp. 442-444
Author(s):  
V. Ya. Bulanov ◽  
V. I. Domogatskii
Keyword(s):  
Piston Rings ◽  
Iron Powders ◽  
Alloyed Iron

Diffusion-alloying sintering of Cr–Mo pre-alloyed iron powders with carbon: The effect of the carbon introduction method on the sinter’s properties

2021 ◽  
Vol 112 (1) ◽  
pp. 48-56
Author(s):  
Lubomir Anestiev ◽  
Jordan Georgiev ◽  
Seryozha Valkanov ◽  
Marcela Selecká ◽  
Sabine Cherneva ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Dissolution Rate ◽  
Reasonable Assumption ◽  
Micro Structure ◽  
Iron Powders ◽  
Base Powder ◽  
Alloyed Iron ◽  
Iron Based

Abstract The influence of the carbon introduction method on the microstructure and the mechanical properties of sinters produced from iron-based powders by diffusion-alloying sintering has been studied. Two methods of carbon introduction were tested: (1) Premixing of the base powder with graphite, and (2) Coating of the base powder with a carbon-containing substance. The results obtained could be summarized as (1) The microstructure and the mechanical properties depend on the method of carbon introduction; (2) The sinters produced from coated powders possess finer micro-structure, improved homogeneity, and in two out of three of the studied compositions, better mechanical properties. Based on the results obtained, a reasonable assumption was made that the method of carbon introduction affects the dissolution rate of the carbon additive, thus affecting the micro-structure and the mechanical properties of the sinter.

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