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,602 北京科技大学学报 第29卷 涂层的抗疲劳性能]，对涂层的耐磨是很重要的， [5]刘长松，殷声.反应热喷涂的发展.材料保护，2000,33(1)：83 因为在实际应用中，硬面涂层往往因疲劳开裂进而 [6]Valente T,Galliano F P.Corrosion resistance properties of reac- tive plasma"sprayed titanium composite coatings.Surf Coat Tech- 剥落失效， 0l,2000,127(1).86 3结论 [7]Ananthapadmanabhan P V,Taylor P R.Titanium carbide iron composite coating by reactive plasma spraying of ilmenite.J Al- 采用钛铁矿粉、石墨和铁粉为主要原料，利用反 1 oys Compd,1999,287(6):121 应火焰喷涂技术可以制备TiC/Fe金属陶瓷复合涂 [8]Li Z W,Liu CS,Huang J H.et al.Synthesis and deposition of 层.在喷涂过程中，Ti、C、Fe三种反应组元以及氧 TiC Fe coatings by oxygen acetylene flame spraying J Mater Sci Technol,2003,19(2):161 乙炔火焰焰流气体之间可能会发生一系列竞争性的 [9]Liu CS,Huang J H,Yin S.A new process for the fine ceramie- 化学反应，但是Ti与C之间的放热反应是最主要 containing composite coatings.JUniv Sci Technol Beijing,2000. 的，因此涂层中的主相为TiC和Fe·涂层的形貌呈 7(3):214 层状结构，由TiC含量不同的片层交替叠加而成； [I0]刘长松，黄继华，殷声.C下e一Ti℃系反应火焰喷涂研究. 在每一个片层中，比较细小的TC颗粒弥散分布在 粉末冶金技术，2001,19(6)：358 [11】黄继华，刘长松，党全坤，等.反应火焰喷涂TC/Fe一A复合 Fe基体上；TiC颗粒大致呈球形，粒度一般在 涂层的研究.粉末冶金技术，2002,20(4)：219 0.5m以下.这种多层多相的涂层结构，会有效阻 [12]刘长松，黄继华，殷声.反应火焰喷涂合成T汇一Fe涂层的反 碍摩擦过程中出现的裂纹扩展，从而显著改善金属 应机理.北京科技大学学报，2000,22(3)：227 陶瓷涂层的耐磨性能， [13]刘长松，黄继华，殷声.反应火焰喷涂合成TC下c涂层的耐 磨性能研究.北京科技大学学报，2001,23(3)：236 参考文献 [14]Liu CS,Huang J H.Yin S.The influence of composition and [1]胡正前，张文华，孙文华，等.等离子喷涂TiC一N一Mo金属陶 process parameters on the microstructure of TiC Fe coatings ob- 瓷涂层成分对组织与性能影响的研究.复合材料学报，1999， tained by reactive flame spray process.J Mater Sci.2002.37: 5241 16(3):87 [15]刘长松，黄继华，殷声.火焰喷涂合成TiC-Fe涂层的热力学 [2]Economou S,Bonte M D.Cells J P.et al.Tribological behaviour at room temperature and at 550C of TiC-based plasma sprayed 分析.金属学报，2000,36(1)：62 [16]Choi Y,Rhee S.Effect of iron and cobalt addition on TiC com- coatings in fretting gross slip conditions.Wear,2000.244(1): 165 bustion synthesis.J Mater Res.1993.8(12):3202 [17]刘宁，崔昆，胡镇华，等.T(C,NI)基金属陶瓷磨损机理的研 [3]Tondu S.Schnick T,Pawlow ski L.et al.Laser glazing of FeCr- 究.磨擦学学报，1999,19(2)：126 TiC composite coatings.Surf Coat Technol,2000,123(2):247 [4]Roberta L.Roberto O.Giacomo C.et al.Self-propagating com- [18]Dallaire S.Cliche G.Tribological properties of TiC Fe coatings bustion synthesis and plasma spraying deposition of TiC Fe pow obtained by plasma spraying reactive powders.J Therm Spray ders.Ceram Int.2003.29(5):519 Technol,1993,2():39 Microstructure of TiC/Fe composite coatings prepared by reactive flame spraying LI Zhiwen,LIU Changsong.HUANG Jihua 1)Mechanical Engineering School.Qingdao Technological University.Qingdao 266033.China 2)Materials Science and Engineering School.University of Science and Technology Beijing.Beijing 100083.China ABSTRACI TiC/Fe composite coatings were successfully obtained by reactive flame spraying(RFS)with il- menite,graphite and ferrous powder as rough materials.The microstructure of the composite coatings and the relations among their wear properties,phases and microstructure were investigated by X ray diffraction,scan- ning electron microscopy and transaction electron microscopy.The results show that the composite coatings mainly consist of TiC and Fe phases and were composed of alternate soft and hard layers with different TiC con- tents.In the TiCrich layers,lots of submicron (<0.5 /m)and approximately round TiC particles are dis- persed in the iron matrix.This multiphase and multilayer coatings will be helpful to improve the wear resistance of cermet composite coatings. KEY WORDS cermets:coating:TiC/Fe:microstructure;self propagating high-temperature synthesis(SHS)涂层的抗疲劳性能［18］对涂层的耐磨是很重要的 因为在实际应用中硬面涂层往往因疲劳开裂进而 剥落失效． 3 结论 采用钛铁矿粉、石墨和铁粉为主要原料利用反 应火焰喷涂技术可以制备 TiC／Fe 金属陶瓷复合涂 层．在喷涂过程中Ti、C、Fe 三种反应组元以及氧 乙炔火焰焰流气体之间可能会发生一系列竞争性的 化学反应但是 Ti 与 C 之间的放热反应是最主要 的因此涂层中的主相为 TiC 和 Fe．涂层的形貌呈 层状结构由 TiC 含量不同的片层交替叠加而成； 在每一个片层中比较细小的 TiC 颗粒弥散分布在 Fe 基 体 上；TiC 颗 粒 大 致 呈 球 形粒 度 一 般 在 0∙5μm以下．这种多层多相的涂层结构会有效阻 碍摩擦过程中出现的裂纹扩展从而显著改善金属 陶瓷涂层的耐磨性能． 参 考 文 献 ［1］ 胡正前张文华孙文华等．等离子喷涂 TiC－Ni－Mo 金属陶 瓷涂层成分对组织与性能影响的研究．复合材料学报1999 16（3）：87 ［2］ Economou SBonte M DCells J Pet a1．Tribological behaviour at room temperature and at 550℃ of TiC－based plasma sprayed coatings in fretting gross slip conditions．Wear2000244（1）： 165 ［3］ Tondu SSchnick TPawlowski Let a1．Laser glazing of FeCr－ TiC composite coatings．Surf Coat Technol2000123（2）：247 ［4］ Roberta LRoberto OGiacomo Cet a1．Self-propagating combustion synthesis and plasma spraying deposition of TiC－Fe powders．Ceram Int200329（5）：519 ［5］ 刘长松殷声．反应热喷涂的发展．材料保护200033（1）：83 ［6］ Valente TGalliano F P．Corrosion resistance properties of reactive plasma-sprayed titanium composite coatings．Surf Coat Technol2000127（1）：86 ［7］ Ananthapadmanabhan P V Taylor P R．Titanium carbide-iron composite coating by reactive plasma spraying of ilmenite．J Alloys Compd1999287（6）：121 ［8］ Li Z WLiu C SHuang J Het al．Synthesis and deposition of TiC－Fe coatings by oxygen-acetylene flame spraying．J Mater Sci Technol200319（2）：161 ［9］ Liu C SHuang J HYin S．A new process for the fine-ceramiccontaining composite coatings．J Univ Sci Technol Beijing2000 7（3）：214 ［10］ 刘长松黄继华殷声．Cr－Fe－Ti－C 系反应火焰喷涂研究． 粉末冶金技术200119（6）：358 ［11］ 黄继华刘长松党全坤等．反应火焰喷涂 TiC／Fe－Al 复合 涂层的研究．粉末冶金技术200220（4）：219 ［12］ 刘长松黄继华殷声．反应火焰喷涂合成 TiC－Fe 涂层的反 应机理．北京科技大学学报200022（3）：227 ［13］ 刘长松黄继华殷声．反应火焰喷涂合成 TiC－Fe 涂层的耐 磨性能研究．北京科技大学学报200123（3）：236 ［14］ Liu C SHuang J HYin S．The influence of composition and process parameters on the microstructure of TiC－Fe coatings obtained by reactive flame spray process．J Mater Sci200237： 5241 ［15］ 刘长松黄继华殷声．火焰喷涂合成 TiC－Fe 涂层的热力学 分析．金属学报200036（1）：62 ［16］ Choi YRhee S．Effect of iron and cobalt addition on TiC combustion synthesis．J Mater Res19938（12）：3202 ［17］ 刘宁崔昆胡镇华等．Ti（CNI）基金属陶瓷磨损机理的研 究．磨擦学学报199919（2）：126 ［18］ Dallaire SCliche G．Tribological properties of TiC－Fe coatings obtained by plasma spraying reactive powders．J Therm Spray Technol19932（1）：39 Microstructure of TiC／Fe composite coatings prepared by reactive flame spraying LI Zhiwen 1）LIU Changsong 12）HUA NG Jihua 2） 1） Mechanical Engineering SchoolQingdao Technological UniversityQingdao266033China 2） Materials Science and Engineering SchoolUniversity of Science and Technology BeijingBeijing100083China ABSTRACT TiC／Fe composite coatings were successfully obtained by reactive flame spraying （RFS） with ilmenitegraphite and ferrous powder as rough materials．The microstructure of the composite coatings and the relations among their wear propertiesphases and microstructure were investigated by X－ray diffractionscanning electron microscopy and transaction electron microscopy．The results show that the composite coatings mainly consist of TiC and Fe phases and were composed of alternate soft and hard layers with different TiC contents．In the TiC－rich layerslots of submicron （＜0∙5μm） and approximately round TiC particles are dispersed in the iron matrix．This multiphase and multilayer coatings will be helpful to improve the wear resistance of cermet composite coatings． KEY WORDS cermets；coating；TiC／Fe；microstructure；self-propagating high-temperature synthesis （SHS） ·602· 北 京 科 技 大 学 学 报 第29卷