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| THE OXIDATION DYNAMICS OF Co-Cr-Mo-C WEAR RESISTING ALLOY |
| Wana Jiamin (Luoyang Ship Material Research Institute) |
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Abstract The wear resistance of Co-26Cr-3Mo-2.5C alloy is shown to be related to the presence of precipitated particles. The long time oxidation dynamics at different temperatures was studied. Results indicate that there is a linear relationship at 700,800 and 900℃ either between weight gain in oxidation and time or detween the amount of the exfoliated oxides and time. When oxidized for 500 hours at 700℃, the oxides are mainly Co_3O_4 and Cr_2O_3 (also CoCr_2O_4 in minor amounts). Above 800℃, CoCr_2O_4 becomes the main oxide.
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Received: 25 August 1988
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[1] 腐食防食协会编,金属材料高温酸化高温腐食,丸善式株会社、(1982)
[2] Irving, G. N; Stringer.J; Whittle, D.P, Corrosion, 33(1) , 55 (1977)
[3] 张嘉媛;张炳大,高铬耐磨铸造合金的组织及其磨损,金情,85～120(1985) |
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