新型细晶Ni<sub>3</sub>Al涂层的高温氧化行为

中国腐蚀与防护学报

2011, Vol. 31

Issue (6): 414-418

研究报告

本期目录 | 过刊浏览

新型细晶Ni₃Al涂层的高温氧化行为

李明菲^1,2,3,彭晓²,王福会^1,2

1. 哈尔滨工程大学材料科学与化学工程学院哈尔滨 500001
2.中国科学院金属研究所金属腐蚀与防护国家重点实验室沈阳 110016
3. 中国石油管道科技研究院廊坊 065001

HIGH TEMPERATURE OXIDATION BEHAVIOR OF A NOVEL FINE-GRAINED Ni₃Al COATING

LI Mingfei^1,2,3, PENG Xiao², WANG Fuhui^1,2

1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001
2. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
3. PetroChina Pipeline R & D Center, Langfang 065001

全文: PDF(2278 KB)

摘要: 采用Ni和Al颗粒复合电沉积与后续真空退火的方法，分别于600℃和 800℃退火温度下制备了两种新型细晶Ni₃Al涂层。与粗晶合金相比，经1000℃氧化20 h后，合金的氧化层发生大面积剥落，而两种涂层的氧化膜粘附性佳，其主要原因为细晶涂层内的大量晶界促进Al 向氧化前沿的扩散，从而抑制了氧化膜/基体界面处“Kirkendall”孔洞的形成与长大。同时发现，800℃退火涂层氧化膜结构由外至内分别为NiO/NiAl₂O₄/Al₂O₃，而600℃退火涂层仅生成NiAl₂O₄与Al₂O₃，对该原因进行了探讨。

关键词 ：氧化, 细晶, 复合电沉积, 退火, 孔洞

Abstract：Fine-grained γ'-Ni₃Al coatings were developed by a two-step process: co-electrodeposition of Ni with Al particles and subsequent annealing in vacuum at 600℃ or 800℃. After oxidation at 1000℃ in air for 20 h, the scales formed on both coatings exhibited better adhesion than that on a coarse-grained Ni₃Al alloy, because the fine-grained coating structure suppressed the formation of voids at the scale/metal interface. Moreover, the scale formed on the coating by annealing at 800℃ consisted of NiO, NiAl₂O₄ and Al₂O₃, while the scale on the coating by annealing at 600℃ consisted of NiAl₂O₄ and Al₂O₃. The reason for this result is related to that the latter coating had a finer-grained structure, which promoted rapid formation of a continuum layer of Al₂O₃.

Key words： oxidation microcrystalline co-electrodeposition annealing pores

收稿日期: 2010-09-13

ZTFLH:

TG172

通讯作者: 李明菲 E-mail: mfli@imr.ac.cn

Corresponding author: LI Mingfei E-mail: mfli@imr.ac.cn

作者简介: 李明菲，女，1982年生，博士生，研究方向为材料腐蚀与防护

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引用本文:

李明菲,彭晓,王福会. 新型细晶Ni₃Al涂层的高温氧化行为[J]. 中国腐蚀与防护学报, 2011, 31(6): 414-418.
LI Meng-Fei, PENG Xiao, YU Fu-Hui. HIGH TEMPERATURE OXIDATION BEHAVIOR OF A NOVEL FINE-GRAINED Ni₃Al COATING. J Chin Soc Corr Pro, 2011, 31(6): 414-418.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2011/V31/I6/414

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