304不锈钢等离子溅射渗Ce渗层分析
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摘要
采用双层辉光等离子渗金属技术将金属Ce渗入304不锈钢。用金相显微镜、扫描电镜、能谱分析仪、X射线衍射仪等方法研究了渗层截面形貌、成分、组织结构,渗层表面形貌、物相分析等。对双辉不锈钢渗Ce试验过程进行了分析,解释了CeCrO_3形成原因。分析了Ce、Cr、C、O等元素的交互作用及对元素含量分布的影响。发现了距渗层表面25μm处Ce含量最高,并通过分析Ce、Cr元素的相互作用解释了该现象的原因。解释了渗层表面Ce的转变过程:Ce→CeO_2→Ce_2O_3→CeCrO_3。
Cerium was metallized into 304 stainless steel by double glow plasma technology. Section morphology,composition,structure of infiltration layer and morphology,phase analysis of surface of infiltration layer were analysed by metallographic microscope,scanning electron microscopy,energy spectrum analyzer and X-ray diffraction. The process of infiltrating Ce into stainless steel,the reason of forming CeCrO_3 and migration of Cr were explained. The highest Ce content is found at 25 microns into layer surface,and the causes of this phenomenon is explained. Transformation process of cerium on the diffusion layer surface can be explained as Ce→CeO_2→Ce_2O_3→CeCrO_3.
Cerium was metallized into 304 stainless steel by double glow plasma technology. Section morphology,composition,structure of infiltration layer and morphology,phase analysis of surface of infiltration layer were analysed by metallographic microscope,scanning electron microscopy,energy spectrum analyzer and X-ray diffraction. The process of infiltrating Ce into stainless steel,the reason of forming CeCrO_3 and migration of Cr were explained. The highest Ce content is found at 25 microns into layer surface,and the causes of this phenomenon is explained. Transformation process of cerium on the diffusion layer surface can be explained as Ce→CeO_2→Ce_2O_3→CeCrO_3.
引文
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[3]马杰,刘芳.稀土元素在钢中的作用及对钢性能的影响[J].钢铁研究,2009,37(3):54-56.Ma J,Liu F. Application of rare earth element in steel and its influence on steel properties[J]. Research on Iron&Steel,2009,37(3):54-56.
[4]张红霞,赵玉梅,师侦峰.稀土元素在金属表面改性中的应用[J].金属热处理,2011,36(3):91-94.Zhang H X,Zhao Y M,Shi Z F. Application of rare earth elements in surface modification of metals[J]. Heat Treatment of Metals,2011,36(3):91-94.
[5]于哲,李言栋,刘承军,等.稀土耐热钢凝固过程中夹杂物析出的热力学分析[J].工业加热,2014,43(4):16-19.Yu Z,Li Y D,Liu C J,et al. Thermodynamic analysis of inclusions precipitation in heat resistant steel with rare earth during solidification[J]. Industrial Heating,2014,43(4):16-19.
[6]杨吉春,刘晓,高学中,等.稀土对钢铁材料组织与性能的影响[J].热加工工艺,2014,43(18):13-16.Yang J C,Liu X,Gao X Z,et al. Effect of rare earth element on microstructure and properties of iron and steel[J]. Hot Working Technology,2014,43(18):13-16.
[7]蔡航伟,高原,马志康,等.钨钼钇等离子共渗工艺及渗层组织的研究[J].表面技术,2012,41(2):16-19.Cai H W,Gao Y,Ma Z K,et al. Research on W-Mo-Y plasma surface alloying process and microstructure of alloying layer[J]. Surface Technology,2012,41(2):16-19.
[8] Skorodumova N V,Simak S I,Lundqvist B I,et al.Quantum origin of the oxygen storage capability of ceria[J]. Phys Rev Lett,2002,89(16):1-4.
[9] Zinkevich M,Djurovic D,Aldinger F. Thermodynamic modelling of the ceria-oxygen system[J]. Solid State Ion,2006,177:989-1001.
[10] Downham D A,Shendye S B. Observations of chromium-oxide films containing cerium and yttrium using transmission electron microscopy[J]. Oxid Met,1995,43:411-433.
[11] Shedye S B,Downham D A. Characterization of Ni-25wt.%Cr Alloys containing reactive elements and the oxide scales grown on them athigh temperatures using transmission electron microscopy[J]. Oxid Met,1995,43:435-457.
[12] Li H,Cui X W,Chen W X. Mechanism of coke formation caused by catalytic nanochromium carbide particles from decomposition of Ce Cr O3[J]. J Am Ceram Soc,2011,94(8):2578-2584.
[13]骆丽杰,童张法,莫丽玢,等.气氛对MnCr2O4尖晶石纳米线生长的影响[J].高等学校化学学报,2009,30(4):647-650.Luo L J,Ting Z F,Mo L F,et al. Effect of atmosphere on the growth of MnCr2O4spinel nanowires[J]. Chemical Journal Of Chinese Universities,2009,30(4):647-650.
[14]隆小庆.络阴离子在阴极放电中的推动力[J].中国民航学院学报,1992,(4):60-64.Long X Q. The driving force of conplex anios at cathode dicharge[J]. Journal of Civil Aviation Institute of China,1992,(4):60-64.
[15]黎文献,刘圣才.铈对铬在镍中扩散速率的影响[J].湖南冶金,1992,7(4):14-19.Li W X,Liu S C. Effect of cerium on the diffusion rate of chromium in nickel[J]. Hunan Metallurgical,1992,7(4):14-19.
[16] Indu Bhati,Pinki Punjabi B,Suresh C. Photocatalytic degradation of fast green using nanosized Ce Cr O3[J].Macedonian Journal of Chemistry and Chemical Engineering,2010,29(2):195-202.
[17] Kuznetsovl M V,Morozov1 Yu G. Glass and Ceramics[J]. 2004,61(3-4):127-135.
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