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- W2183685356 abstract "This contribution deals with the effect of carbon content (0.5, 0.6 and 0.8 wt.%) on the reduction processes during the sintering of chromium prealloyed steel, Astaloy CrM, using continuous monitoring of CO, CO2 and H2O content in the sintering atmosphere. Specimens with a green density of 6.9 g·cm -3 were isothermally sintered at 1120 and 1200oC for 30 min in a N2+10% H2 atmosphere. The results showed that iron oxides are removed by hydrogen reduction during the heating stage at ~470oC, direct carbothermal reduction of oxides starts at ~900oC. The carbon is an effective reducing agent and has a significant effect on the final microstructure composition of sintered compacts. Continuous monitoring of atmosphere composition showed that higher carbon content shifts the carbothermal reduction of stable chromium oxides to a lower temperature. It does not affect the final oxygen content and has a negative effect on fracture strength of sintered material due to the presence of a carbide phase at grain boundaries." @default.
- W2183685356 created "2016-06-24" @default.
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- W2183685356 date "2011-01-01" @default.
- W2183685356 modified "2023-09-27" @default.
- W2183685356 title "INFLUENCE OF CARBON CONTENT ON OXIDES' REDUCTION DURING SINTERING OF Cr-Mo-C PREALLOYED STEEL" @default.
- W2183685356 hasPublicationYear "2011" @default.
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