|
|
|
| THE EFFECT OF CERIUM ON THE OXIDATION RESISTANCE OF Ni—Cr—Cu ALLOY |
| Lu Yaxuan Gao Jinghai Liu Vansheng and Gao Xiulan (The Central Institute of Iron and Steel Research; The Ministry of Metallurgical Industry) |
|
|
|
|
Abstract The authors have investigated the effect of the addition of 0.1% and 0.8% Ce on isothermal oxidation of Ni—Cr—Cu for 100 hours at 1200℃in air, and on cyclic oxidation for 500 hours at 1200℃ in air. It is thought that a small amount of addition of cerium to the Ni—Cr—Cu alloys reduces the oxidation rate considerably in the later stage. The spalling resistance of the scale is also increased with the addition of cerium. The decrease of oxidation rate results from a combination of various effects, They are: (1) Cr rich protective scale is more rapidly formed because of faster diffusion of chromium; (2) cerium-containing oxide concentrating near scale/alloy interface complexes with vacancies, so that voids at scale/alloy interface are reduced; (3) cerium-containing oxide dissolved in the scale blocks the short-circuit diffusion of Cr~(3+) along oxide grain boundries. The main causes for the increase of spalling resistance with cerium addition are: (1)the grains of scale are refined by addition of cerium, thereby improving the ability of such scales to plastic deformation and to accommodation to thermal stress; (2) the keying effect of rare-earth oxide in the 0.8% Ce-containing alloy improves oxide adherence with substrate, and changes the distribution state of thermal stress.
|
|
Received: 25 April 1982
|
Cite this article:
Lu Yaxuan Gao Jinghai Liu Vansheng and Gao Xiulan (The Central Institute of Iron and Steel Research; The Ministry of Metallurgical Industry). THE EFFECT OF CERIUM ON THE OXIDATION RESISTANCE OF Ni—Cr—Cu ALLOY. J Chin Soc Corr Pro, 1982, 2(2): 20-28.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1982/V2/I2/20
|
[1] G.M.Ecer和G.H.Meier, Oxid. Met, 13, 2, 119(1979)
[2] F. A. Golightly, F.H.Stott和G.C.Wood. Oxid.Met, 10, 3, 163(1976)
[3] #12
[4] B.Wonderotto Zeitschrift for Metallkunde. 56, 2． 63～74(1965)
[5] 根本力男,日本金属学会会报.18,3,193(1979)
[6] I. M. Allam, D.P Whittle,和J.Stringer. Oxid. Met. 12, 1, 35(1978)
[7] 斋腾安俊等,日本金属学会志,39． 11,1110(1979)
[8] G.M.Ecer和G.H.Meier, Oxid.Met. 13, 2． 159(1979) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
