CoCrNiAlY涂层制备工艺对组织形态及高温氧化行为的影响
|
摘要
为了研究CoCrNiAlY涂层微观组织结构对高温氧化行为和剥落行为的影响规律,采用激光熔覆技术和等离子喷涂工艺在718高温合金表面制备CoCrNiAlY涂层,观察其微观组织形态。利用XRD和SEM对1150℃高温氧化试验样品进行氧化层物相分析和形貌观察。结果表明,激光熔覆制备的CoCrNiAlY涂层中形成了胞状亚结构的等轴晶凝固组织,相对于等离子喷涂制备的CoCrNiAlY涂层结构更致密,具有更优异的抗高温氧化性能。在高温氧化过程中,等离子喷涂CoCrNiAlY涂层生成了以Cr_2O_3结构为主的复合氧化膜。激光熔覆CoCrNiAlY涂层生成Al_2O_3结构的单一氧化膜,而且熔覆层中原位形成的Y_2O_3钉扎作用能有效提高氧化膜的抗剥落性。文中系统分析讨论了两种不同工艺制备的组织形态对高温氧化膜形成机制的影响,激光熔覆涂层在高温下主要是以界面扩散方式形成致密的Al_2O_3膜,等离子喷涂涂层在高温下以界面反应的方式快速形成Cr_2O_3复合氧化膜。
CoCrNiAlY coatings on the 718 superalloy surface were produced by laser melting depositing technique and air plasma spraying process. The microstructure was observed to study the effect of microstructure on high temperature oxidation behavior and spallation behavior of the CoCrNiAlY coating. Phase and oxide layer morphology exposed to high temperature oxidation at 1150 °C were analyzed by XRD and SEM. Results show that the surface of the CoCrNiAlY coating prepared by laser melting deposition is denser and exhibits more excellent resistance to high temperature oxidation than that of the air plasma spraying CoCrNiAlY coating. During the high temperature oxidation, the air plasma spraying CoCrNiAlY coating produces an oxide layer containing Cr_2O_3 as a main component, and the laser melting deposited CoCrNiAlY coating forms the oxide layer with Al_2O_3 as the main component shows good spalling resistance. In-situ Y_2O_3 particles formed in the CoCrNiAlY coating during laser melting deposition are thought to be beneficial for anchoring the oxide layer. The effects of processing technique of the CoCrNiAlY coating on microstructure formation and high temperature oxidation mechanism were analyzed. Oxidation of the laser melting deposited CoCrNiAlY coating yields a dense Al_2O_3 layer through interfacial diffusion,while oxidation of the air plasma spraying coating results in a composite Cr_2O_3 layer through interface reaction.
CoCrNiAlY coatings on the 718 superalloy surface were produced by laser melting depositing technique and air plasma spraying process. The microstructure was observed to study the effect of microstructure on high temperature oxidation behavior and spallation behavior of the CoCrNiAlY coating. Phase and oxide layer morphology exposed to high temperature oxidation at 1150 °C were analyzed by XRD and SEM. Results show that the surface of the CoCrNiAlY coating prepared by laser melting deposition is denser and exhibits more excellent resistance to high temperature oxidation than that of the air plasma spraying CoCrNiAlY coating. During the high temperature oxidation, the air plasma spraying CoCrNiAlY coating produces an oxide layer containing Cr_2O_3 as a main component, and the laser melting deposited CoCrNiAlY coating forms the oxide layer with Al_2O_3 as the main component shows good spalling resistance. In-situ Y_2O_3 particles formed in the CoCrNiAlY coating during laser melting deposition are thought to be beneficial for anchoring the oxide layer. The effects of processing technique of the CoCrNiAlY coating on microstructure formation and high temperature oxidation mechanism were analyzed. Oxidation of the laser melting deposited CoCrNiAlY coating yields a dense Al_2O_3 layer through interfacial diffusion,while oxidation of the air plasma spraying coating results in a composite Cr_2O_3 layer through interface reaction.
引文
[1]王心悦,辛丽,韦华,等.高温防护涂层研究进展[J].腐蚀科学与防护技术,2013,25(3):175-183.WANG X Y,XIN L,WEI H.Research progress of high temperature protective coatings[J].Corrosion science and protection technology,2013,25(3):175-183(in Chinese).
[2]贾近,刘赛月,孟君晟,王铀.面向高端装备零部件的稀土改性MCrAlY涂层[J].中国表面工程,2018,31(5):54-62.JIA J,LIU S Y,MENG J S,WANG Y.MCrAlY Coating Modified by Rare Earth for High-end Equipment Parts[J].China surface engineering,2018,31(5):54-62(in Chinese).
[3]LIU X B,GU Y J.Plasma jetγ/Cr3C3 composite coating on steel[J].Material Letters,2006,60:577-580.
[4]张阳,黄传兵,骆丽杰,兰昊,李建保,张伟刚.激光熔覆CoNiCrAlY高温合金格栅的高速刮削性能[J].中国表面工程,2018,31(2):165-171.ZHANG Y,HUANG C B,LUO L J,et al.High-speed scraping properties of grid-structured CoNiCrAlY superalloy by laser cladding[J].China Surface Engineering,2018,31(2):165-171(in Chinese).
[5]MARTINA D,ALESSIO F,ALESSANDRO L,et al.Isothermal oxidation resistance comparison between air plasma sprayed,vacuum plasma sprayed and high velocity oxygen fuel sprayed CoNiCrAlY bond coats[J].Surface&Coatings Technology,2010,204(15):2499-2503.
[6]PEREIRA J,ZAMBRANO J,TOBAR M J,YANEZ A,AMIGO V.High temperature oxidation behavior of laser cladding MCrAlY coatings on austenitic stainless steel[J].Surface&Coatings Technology,2015,270(5):243-248.
[7]LUO L R,SHAN X,ZOU Z H,et al.A high performance NiCoCrAlY bond coat manufactured using laser powder deposition[J].Corrosion Science,2017,126(7):356-365.
[8]PEREIRA J,ZAMBRANO J,LICAUSI M,et al.Tribology and high temperature friction wear behavior of MCrAlYlaser cladding coatings on stainless steel[J].Wear,2015,330(1):280-287.
[9]孙超,王启民,唐永吉,等.电弧离子镀NiCoCrAlY涂层的组织结构及初期氧化[J].金属学报,2005,41(11):1167-1173.SUN C,WANG Q M,TANG Y J,et al.Microstructure and Initial Stage Oxidation of NiCoCrAlY Coatings Deposited by ARC ION Plating Technique[J].Acta Metallrugica Sinica,2005,41(11):1167-1173(in Chinese).
[10]SHAHZAD S,ZHANG Y D,WANG H F,et al.Effect of Re on High Temperature Oxidation Behavior of MCrAlYCoated Alloys[J].Rare Metal Materials and Engineering,2015,44(S1):316-319.
[11]FEIZABADI A,DOOLABIN M S,SADMEZHAAD S K,REAZEI M.Cyclic oxidation characteristics of HVOFthermal-sprayed NiCoCrAlY and CoNiCrAlY coatings at1000℃[J].Journal of Alloys and Compounds,2018,746(2):509-519.
[12]BRANDL W,MARGINEAB G,MAGHET D,et al.Effects of specimen treatment and surface preparation on the isothermal oxidation behavior of the HVOF-sprayed MCrAlYcoatings[J].Surface&Coatings Technology,2004,188(1):20-26.
[13]PENG X,WANG F.High-temperature oxidation of aerospace materials[C].Aerospace Materials Handbok.Florida:CRC press,2012:237-251
[14]赵增祺,李素珍,熊玮,颜玉新,李碚.稀土Y离子注入对形成不同氧化膜合金的高温氧化性能的影响[J].稀土,1999,20(8):31-34.ZHAO Z Q,LI S Z,XIONG W,YAN Y X,LI B.Effect of YIon Implantation on High Temperature Oxidation Resistance of the Al loys with Diff erent Kinds of Oxide Films[J].Chinese Rare Earths,1999,20(8):31-34(in Chinese).
[15]YUAN K,PENG R L,LI X H et al.Some aspects of elemental behaviour in HVOF MCrAlY coatings in high-temperature oxidation[J].Surface&Coatings Technology,2015,261(1):86-101.
[16]杨珍,鲁金涛,赵新宝,等.稀土元素对合金高温氧化的影响[J].中国稀土学报,2014,32(06):641-649.YANG Z,LU J T,ZHAO X B,et al.Effect of Rare Earth Elements on High Temperature Oxidation of Metals[J].Journal of the Chinese Society of Rare Earths,2014,32(06):641-649(in Chinese).
[17]LAUGIER M T.Adhesion of TiC and TiN coatings prepared by chemical vapour deposition on WC-Co-based cemented carbides[J].Journal of Materials Science,1986,21(7):2269-2272.
[18]ATTAR F,THOMAS J.Adhesion evaluation of thin ceramic coatings on tool steel using thescratch testing technique[J].Surface and Coatings Technology,1996,78(1):87-102.
[2]贾近,刘赛月,孟君晟,王铀.面向高端装备零部件的稀土改性MCrAlY涂层[J].中国表面工程,2018,31(5):54-62.JIA J,LIU S Y,MENG J S,WANG Y.MCrAlY Coating Modified by Rare Earth for High-end Equipment Parts[J].China surface engineering,2018,31(5):54-62(in Chinese).
[3]LIU X B,GU Y J.Plasma jetγ/Cr3C3 composite coating on steel[J].Material Letters,2006,60:577-580.
[4]张阳,黄传兵,骆丽杰,兰昊,李建保,张伟刚.激光熔覆CoNiCrAlY高温合金格栅的高速刮削性能[J].中国表面工程,2018,31(2):165-171.ZHANG Y,HUANG C B,LUO L J,et al.High-speed scraping properties of grid-structured CoNiCrAlY superalloy by laser cladding[J].China Surface Engineering,2018,31(2):165-171(in Chinese).
[5]MARTINA D,ALESSIO F,ALESSANDRO L,et al.Isothermal oxidation resistance comparison between air plasma sprayed,vacuum plasma sprayed and high velocity oxygen fuel sprayed CoNiCrAlY bond coats[J].Surface&Coatings Technology,2010,204(15):2499-2503.
[6]PEREIRA J,ZAMBRANO J,TOBAR M J,YANEZ A,AMIGO V.High temperature oxidation behavior of laser cladding MCrAlY coatings on austenitic stainless steel[J].Surface&Coatings Technology,2015,270(5):243-248.
[7]LUO L R,SHAN X,ZOU Z H,et al.A high performance NiCoCrAlY bond coat manufactured using laser powder deposition[J].Corrosion Science,2017,126(7):356-365.
[8]PEREIRA J,ZAMBRANO J,LICAUSI M,et al.Tribology and high temperature friction wear behavior of MCrAlYlaser cladding coatings on stainless steel[J].Wear,2015,330(1):280-287.
[9]孙超,王启民,唐永吉,等.电弧离子镀NiCoCrAlY涂层的组织结构及初期氧化[J].金属学报,2005,41(11):1167-1173.SUN C,WANG Q M,TANG Y J,et al.Microstructure and Initial Stage Oxidation of NiCoCrAlY Coatings Deposited by ARC ION Plating Technique[J].Acta Metallrugica Sinica,2005,41(11):1167-1173(in Chinese).
[10]SHAHZAD S,ZHANG Y D,WANG H F,et al.Effect of Re on High Temperature Oxidation Behavior of MCrAlYCoated Alloys[J].Rare Metal Materials and Engineering,2015,44(S1):316-319.
[11]FEIZABADI A,DOOLABIN M S,SADMEZHAAD S K,REAZEI M.Cyclic oxidation characteristics of HVOFthermal-sprayed NiCoCrAlY and CoNiCrAlY coatings at1000℃[J].Journal of Alloys and Compounds,2018,746(2):509-519.
[12]BRANDL W,MARGINEAB G,MAGHET D,et al.Effects of specimen treatment and surface preparation on the isothermal oxidation behavior of the HVOF-sprayed MCrAlYcoatings[J].Surface&Coatings Technology,2004,188(1):20-26.
[13]PENG X,WANG F.High-temperature oxidation of aerospace materials[C].Aerospace Materials Handbok.Florida:CRC press,2012:237-251
[14]赵增祺,李素珍,熊玮,颜玉新,李碚.稀土Y离子注入对形成不同氧化膜合金的高温氧化性能的影响[J].稀土,1999,20(8):31-34.ZHAO Z Q,LI S Z,XIONG W,YAN Y X,LI B.Effect of YIon Implantation on High Temperature Oxidation Resistance of the Al loys with Diff erent Kinds of Oxide Films[J].Chinese Rare Earths,1999,20(8):31-34(in Chinese).
[15]YUAN K,PENG R L,LI X H et al.Some aspects of elemental behaviour in HVOF MCrAlY coatings in high-temperature oxidation[J].Surface&Coatings Technology,2015,261(1):86-101.
[16]杨珍,鲁金涛,赵新宝,等.稀土元素对合金高温氧化的影响[J].中国稀土学报,2014,32(06):641-649.YANG Z,LU J T,ZHAO X B,et al.Effect of Rare Earth Elements on High Temperature Oxidation of Metals[J].Journal of the Chinese Society of Rare Earths,2014,32(06):641-649(in Chinese).
[17]LAUGIER M T.Adhesion of TiC and TiN coatings prepared by chemical vapour deposition on WC-Co-based cemented carbides[J].Journal of Materials Science,1986,21(7):2269-2272.
[18]ATTAR F,THOMAS J.Adhesion evaluation of thin ceramic coatings on tool steel using thescratch testing technique[J].Surface and Coatings Technology,1996,78(1):87-102.