金属间化合物作为高温结构材料,对高温氧化、磨损和腐蚀有很好的防护效果.本工作对激光合成和制备金属间化合物抗高温氧化涂层进行了研究,采用Ni包Al粉末,通过基体稀释过渡Fe,基于低激光功率、慢扫描速度和大束斑尺寸的工艺原则,直接合成了Ni30Al20Fe金属间化合物,并且制备出无裂纹和气孔、完全致密、与基体形成冶金结合的涂层,其组织是Fe固溶强化的细小的β-NiAl-Fe金属间化合物基体加弥散的粒状和薄带状γ-Fe-Ni奥氏体析出相,固溶强化和细晶强化使涂层强度和韧性得到改善.
参考文献
[1] | N.S. Sbloff;C.T. Liu .Emerging applications of intermetallics[J].Intermetallics,2000(9/11):1313-1320. |
[2] | R. Darolia .Ductility and fracture toughness issues related to implementation of NiAl for gas turbine applications[J].Intermetallics,2000(9/11):1321-1327. |
[3] | Liu C T;STRINGER J;MUNDY J N et al.Ordered intermetallics alloys: an assessment[J].Intermetallics,1997,5:579-596. |
[4] | Hack JE.;Darolia R.;Brzeski JM. .FRACTURE AND DEFORMATION OF NIAL SINGLE CRYSTALS[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1995(0):268-276. |
[5] | Sauthoff G .Multiphase intermetallics alloys for structural applications[J].Intermetallics,2000,8:1101-1109. |
[6] | A. Misra;R. Gibala;R.D. Noebe .Optimization of toughness and strength in multiphase intermetallics[J].Intermetallics,2001(10/11):971-978. |
[7] | Yang S L;WANG F H;WU W T .Effect of microcrystallization on the cycle oxidation behavior of β-NiAl intermetallics at 1000℃ in air[J].Intermetallics,2001,9:741-744. |
[8] | 曾潮流;RIZZO F C.两相NiAl-Fe金属间化合物的高温氧化行为[J].中国腐蚀与防护学报,1999(02):39-44. |
[9] | Hearley J A;LITTLE J A;STURGEON A J .The effect of spray parameters on the properties of high velocity oxy-fuel NiAl intermetallic coatings[J].Surface and Coatings Technology,2000,123:210-218. |
[10] | ZHAO LIDONG;LUGSCHEIDER ERICH .High velocity oxy-fuel of a NiCoCrAlY and an intermetallic NiAl-TaCr alloy[J].Surface and Coatings Technology,2002,149:230-235. |
[11] | Hsu S E;HSU I C .Study on VPS-cladding NiAl intermetallics on TiAl-based intermetallics[J].Corrosion Science,1999,41(07):1431-1445. |
[12] | He JL.;Yu CH.;Leyland A.;Wilson AD.;Matthews A. .A comparative study of the cyclic thermal oxidation of PVD nickel aluminide coatings[J].Surface & Coatings Technology,2002(1):67-79. |
[13] | Ding Y Q;ZHANG Y;NORTHWOOD D O et al.PVD NiAl intermetallic coatings: microstructure and mechanical properties[J].Surface and Coatings Technology,1997,94-95:483-489. |
[14] | Yang 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. |
[15] | ABBOUD J H;RAWLING R D;West D R F .Functionally graded nickel-aluminide and iron-aluminide coatings produced via laser cladding[J].Journal of Materials Science,1995,30:5931-5938. |
[16] | Chen Y;WANG H M .Microstructure of laser clad TiC/NiAl-Ni3(Al, Ti, C) wear-resisted intermetallics matrix composite coatings[J].Materials Letters,2003(57):2029-2036. |
[17] | 张永刚;韩雅芳;陈国良.金属间化合物结构材料[M].北京:国防工业出版社,2001 |
[18] | Guha S;BAKER I;MUNROE P R .The microstructure of multiphase Ni-20Al-30Fe and its constituent phases[J].Materials Characterization,1995,34:181-188. |
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