胡海亭,刘兴,孙俭峰

• 1:黑龙江科技大学材料科学与工程学院

摘要(Abstract)：

采用在Ni基上分别电镀Ni-Al2O3复合涂层,单Ni镀层和Ni-Y2O3复合涂层+1100℃扩散渗铬3 h的方法,制备了3种渗铬涂层,并对其进行循环氧化实验。SEM分析表明:与Y2O3微米粒子相比,Al2O3纳米颗粒更加均匀分布在Ni纳米晶中,而且抑制了渗铬过程中涂层晶粒的长大。氧化实验表明:与普通渗铬涂层相比,Al2O3改性的渗铬涂层所具有的细晶结构促进了氧化初期保护性Cr2O3氧化膜的快速形成,随后涂层晶界处Al2O3抑制了Cr的外扩散,降低了氧化速度并提高涂层的抗剥落性能;微米Y2O3粒子通过溶解和重新析出来抑制渗层晶粒长大,且具有稀土活性元素的效应,从而提高渗层的抗循环氧化性能。

关键词(KeyWords)： 复合电镀;渗铬;高温氧化

Abstract:

Keywords:

基金项目(Foundation): 黑龙江科技大学引进人才项目(06-13);; 黑龙江省教育厅科技项目(11531319)

作者(Author): 胡海亭,刘兴,孙俭峰

DOI: 10.13289/j.issn.1009-6264.2014.04.034

参考文献(References)：

• [1]Atkinson H V.A review of the role of short-circuit diffusion in the oxidation of nickel,chromium,and nickel-chromium alloys[J].Oxidation of Metal,1985,24(3):177-197.
• [2]Goward G W.Protective coatings-purpose,role,and design[J].Materials Science and Technology,1986,2(3):194-200.
• [3]Goward G W,Boone D H.Mechanisms of formation of diffusion aluminide coatings on nickel-base superalloys[J].Oxidation of Metal,1971,3(5):475-495.
• [4]Zhou W,Zhao Y G,Li W,et al.Oxidation behavior of the Y2O3-modified aluminide coating on Ti-6Al-4V alloy[J].Materials Science and Engineering A,2007,458:34-38.
• [5]ZHOU Y B,CHEN H Y,ZHANG H J.Oxidation of an Al2O3-dispersion chromizing coating by pack-cementation at 800℃[J].Transactions of Nonferrous Metals Society of China,2008,18(3):598-602.
• [6]张海军,周月波,胡海亭.Al2O3改性的渗铬涂层制备与氧化性能研究[J].稀有金属材料与工程,2009,38(9):1655-1658.ZHANG Hai-jun,ZHOU Yue-bo,HU Hai-ting.Preparation and oxidation performance of an-Al2O3-modified chromizing coating[J].Rare Metal Materials and Engineering,2009,38(9):1655-1658.
• [7]Zhu L,Peng X,Yan J.Oxidation of a novel chromium coating with CeO2dispersions[J].Oxidation of Metal,2004,62(3):411-426.
• [8]Yan J,Peng X,Wang F.Oxidation of a novel CeO2-dispersion strengthened chromium coating in simulated coal-combustion gases[J].Materials Science and Engineering A,2006,426:266-273.
• [9]ZHANG C,PENG X,ZHAO.Hot corrosion of an electrodeposited Ni-11 wt.%Cr nanocomposite under molten Na2SO4-K2SO4-NaCl[J].Journal of The Electrochemical Society,2005,152(9):321-326.
• [10]Zhou Y B,Chen H,Zhang H.Preparation and oxidation of an Y2O3-dispersed chromizing coating by pack-cementation at 800℃[J].Vacuum,2008,82(4):748-753.
• [11]ZHOU Y B,HU H T,ZHANG H J.Oxidation behavior of aluminide coatings on carbon steel with and without electrodeposited Ni-CeO2film by lowtemperature pack cementation[J].Vacuum,2011,86:210-217.
• [12]Douglass D L.The oxidation mechanism of dilute Ni-Cr alloys[J].Corrosion Science,1968,8(10):665-678.
• [13]Cotekk C M,Yuerk G J,Hussey R J.The influence of grain-boundary segregation of Y in Cr2O3on the oxidation of Cr metal[J].Oxidation of Metal,1990,34(3):173-200.
• [14]Cueff R,Buscail H,Caudron E.Oxidation behaviour of kanthal A1 at 1173 K:effect of yttrium alloying addition[J].Applied Surface Science,2003,207(10):246-254.
• [15]Pint B A.Experimental observations in support of the dynamic segregation theory to explain the reactive-element effect[J].Oxidation of Metal,1996,45(5):1-37.
• [16]Hindam H M,Whittle D P.Peg formation by short-circuit diffusion in Al2O3scales containing oxide dispersions[J].Journal of the Electrochemical Society,1982,129:1147-1149.
• [17]Hou P Y,Stringer J.The effect of reactive element additions on the selective oxidation,growth and adhesion of chromia scales[J].Materials Science and Engineering A,1995,202:1-10.
• [18]Hou P Y,Stringer J.The influence of ion-implanted yttrium on the selective oxidation of chromium in Co-25 wt.%Cr[J].Oxidation of Metal,1988,29(1-2):45-73.

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