钴基高温合金的循环氧化行为研究

中国腐蚀与防护学报

2002, Vol. 22

Issue (2): 115-117

研究报告

本期目录 | 过刊浏览

钴基高温合金的循环氧化行为研究

袁福河;孙晓峰;管恒荣

中科院金属所

CYCLIC OXIDATION BEHAVIOR OF A COBALT-BASE SUPERALLOY

Fuhe Yuan;Xiaofeng Sun;Hengrong Guan

中科院金属所

全文: PDF(146 KB)

摘要: 研究了钴基高温合金K40S在950℃和1000℃的循环氧化行为.发现合金在950℃ 400 h以内的抗循环氧化性能较好.合金在1000℃氧化50 h以后因为表面氧化膜剥落开始出现失重现象.在1000℃循环氧化初期的产物主要为Cr2O3，其次为CoCr2O4和少量的CoO，400 h以后，Cr2O3基本剥落，合金表面由于Cr的损耗又生成Cr2WO6、NiCr2O4以及挥发性的WO3氧化产物.添加Si和Mn元素使K40S合金抗循环氧化性能明显地比不含Si和Mn元素的DZ40M钴基高温合金优越.

关键词 ：钴基高温合金, 循环氧化

Abstract：The cyclic oxidation behavior of K40S,a kind of cobalt-base superalloy,with maximun temperatures at 950℃,1000℃ was studied .The alloy possesses excellent resistance when tested at 950℃ for 400 hours.At 1000℃,K40S exhibited weight loss behavior due to oxide scale spallation after 5 0 cycles of test.Primary oxide products at the early stage of oxidation are Cr 2O3,CoCr2O4 with a little amount of CoO.Nearly all of the formed Cr2 O3 were detached off after 400 thermal cycles.Other oxides such as Cr2WO6, NiCr2O4,volatile WO3 also began to develop due to depletion of chromiu m in the alloy surfaces.Silicon,manganese addition make K40S alloy more resis tant to cyclic oxidation than directionally solidified DZ40M alloy,which has sim ilar composition to K40S but contains no silicon,manganese elements in the a lloy.

Key words： cobalt-base superalloy cyclic oxidation

收稿日期: 2001-12-03

ZTFLH:

TG172.82

通讯作者: 袁福河

Corresponding author: Fuhe Yuan

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引用本文:

袁福河; 孙晓峰; 管恒荣 . 钴基高温合金的循环氧化行为研究[J]. 中国腐蚀与防护学报, 2002, 22(2): 115-117 .
Fuhe Yuan, Xiaofeng Sun, Hengrong Guan. CYCLIC OXIDATION BEHAVIOR OF A COBALT-BASE SUPERALLOY. J Chin Soc Corr Pro, 2002, 22(2): 115-117 .

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2002/V22/I2/115

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