溅射纳米晶Ni20Cr涂层的高温氧化行为
High-Temperature Oxidation Behavior of Sputtered Ni20Cr Nanocrystalline Coating
摘 要
利用溅射法在Ni20Cr合金表面制备相同成分的纳米晶涂层, 研究了该合金与纳米晶涂层在空气中1000 ℃的恒温氧化和抗循环氧化行为。结果表明, 纳米晶涂层恒温氧化时生成单层连续氧化膜, 氧化产物以Cr2O3为主, 有少量的NiCr2O4存在。经1000 ℃循环氧化, 纳米晶涂层生成的氧化物致密且颗粒细小, 氧化膜相对较完整。溅射纳米晶涂层的抗循环氧化性能优于合金。
纳米晶
恒温氧化
循环氧化
sputtered coating
nanocrystalline
isothermal oxidation
cyclic oxidation
Abstract
A sputtered Ni20Cr nanocrystalline coating was prepared by means of magnetron sputtering. The isothermal oxidation and cyclic oxidation behaviors of the Ni20Cr nanocrystalline coating were investigated at 1000 ℃ in air. The results showed that a continuous oxide scale was formed on the surface of the nanocrystalline coating at 1000 ℃, and the scale consisted mainly of Cr2O3 with a little NiCr2O4. No obvious cracks were observed on the nanocrystalline coating, and a fine-grain structured and compact scale was formed on the nanocrystalline coating after 100 cycles of oxidation at 1000 ℃, indicating that the cyclic oxidation resistance of the sputtered nanocrystalline coating is better than that of Ni20Cr alloy.
中图分类号 TG174.444
所属栏目 试验研究
基金项目 国家自然科学基金项目(No.50671115)
收稿日期 2010/8/16
修改稿日期 2010/8/30
网络出版日期
作者单位点击查看
备注张洋, 博士,
引用该论文: ZHANG Yang,ZONG Guang-xia,WANG Fu-hui. High-Temperature Oxidation Behavior of Sputtered Ni20Cr Nanocrystalline Coating[J]. Corrosion & Protection, 2011, 32(6): 422
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参考文献
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【8】Liu Z Y, Gao W, Karl L Dahm, et al． Improved oxide spallation resistance of microcrystalline Ni-Cr-Al coatings[J]． Oxid Met, 1997, 50(1/2): 51-69.
【9】Wang F H． Oxidation resistance of sputtered Ni3(AlCr) nanocrystallin coating[J]． Oxid Met, 1997, 47(1/2): 247-258.
【2】Ahmad B, Fox P. STEM analysis of the transient oxidation of a Ni20Cr alloy at high temperature[J]. Oxid Met, 1999, 52(1/2): 113-121.
【3】Stott F H, Wood G C, Stringer J. The influence of alloying elements on the development and maintenance of protective scales[J]. Oxid Met, 1995, 45(1/2): 113-145.
【4】耿树江, 王福会． 水蒸气对Ni-20Cr合金及其溅射微晶涂层1000 ℃氧化行为的影响[J]. 中国腐蚀与防护学报, 2001, 21(4): 95-100.
【5】李铁藩． 金属晶界在高温氧化中的作用[J]. 中国腐蚀与防护学报, 2002, 22(3): 180-183.
【6】Yan S L, Wang F H, Sun Z M, et al. Influence of columnar microstructure of a sputtered NiAl coating on its oxidation behavior at 1000 ℃[J]. Intermetallics, 2002, 10: 467-471.
【7】Wagner C． Types of reaction in the oxidation of alloys[J]. Z Elektrochem, 1959, 63: 772-782.
【8】Liu Z Y, Gao W, Karl L Dahm, et al． Improved oxide spallation resistance of microcrystalline Ni-Cr-Al coatings[J]． Oxid Met, 1997, 50(1/2): 51-69.
【9】Wang F H． Oxidation resistance of sputtered Ni3(AlCr) nanocrystallin coating[J]． Oxid Met, 1997, 47(1/2): 247-258.
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