(Ti,W,Mo,Nb,Ta)(C,N)纳米固溶体粉的合成及性能
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摘要
采用高能球磨-碳热氮化还原法合成了(Ti,W,Mo,Nb,Ta)(C,N)纳米固溶体粉,利用X射线衍射仪、扫描电子显微镜和元素分析仪等分析了还原温度和还原时间对粉体物相组成、晶格常数及碳氮含量的影响。结果表明:金属元素在Ti(C,N)中的固溶按难易程度排序为钽、铌、钨、钼;随还原温度的升高和还原时间的延长,固溶体粉的晶格常数、碳含量及粒径均逐渐增大;在1 500℃碳热氮化还原1 h后,可合成单相且平均粒径为100 nm的(Ti,W,Mo,Nb,Ta)(C,N)固溶体粉,其碳、氮质量分数分别为9.1%和7.2%。
( Ti,W,Mo,Nb,Ta)( C,N) solid solution nano-powders were synthesized by high energy ball milling and carbothermal reduction-nitridation. The effects of reduction temperature and reduction time on the phase composition,lattice constant and content of C and N of the powders were analyzed using X-ray diffractometer,scanning electron microscope and elemental analyzer. The results show that the solid solution degree of metal elements in Ti( C,N) was in the order of Ta,Nb,W and Mo. With the increase of reduction temperature or extension of reduction time,the lattice constant,C content and particle size of the solid solution powders increased gradually. After carbothermal reduction-nitridation at 1500 ℃ for 1 h,the( Ti,W,Mo,Nb,Ta)( C,N) solid solution powder with a single phase and average particle size of 100 nm was obtained,which contained 9.1 wt% C and 7.2 wt% N.
( Ti,W,Mo,Nb,Ta)( C,N) solid solution nano-powders were synthesized by high energy ball milling and carbothermal reduction-nitridation. The effects of reduction temperature and reduction time on the phase composition,lattice constant and content of C and N of the powders were analyzed using X-ray diffractometer,scanning electron microscope and elemental analyzer. The results show that the solid solution degree of metal elements in Ti( C,N) was in the order of Ta,Nb,W and Mo. With the increase of reduction temperature or extension of reduction time,the lattice constant,C content and particle size of the solid solution powders increased gradually. After carbothermal reduction-nitridation at 1500 ℃ for 1 h,the( Ti,W,Mo,Nb,Ta)( C,N) solid solution powder with a single phase and average particle size of 100 nm was obtained,which contained 9.1 wt% C and 7.2 wt% N.
引文
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[4]PENG Y,MIAO H,PENG Z.Development of Ti CN-based cermets:Mechanical properties and wear mechanism[J].International Journal of Refractory Metals and Hard Materials,2013,39(7):78-89.
[5]LIU Y,JIN Y,YU H,et al.Ultrafine(Ti,M)(C,N)-based cermets with optimal mechanical properties[J].International Journal of Refractory Metals and Hard Materials,2011,29(1):104-107.
[6]XIONG J,GUO Z,SHEN B,et al.The effect of WC,Mo2C,Ta C content on the microstructure and properties of ultra-fine Ti C0.7N0.3cermet[J].Materials and Design,2007,28(5):1689-1694.
[7]CHICARDI E,TORRES Y,CORDOBA J M,et al.Effect of tantalum content on the microstructure and mechanical behavior of cermets based on(TixTa1-x)(C0.5N0.5)solid solutions[J].Materials and Design,2014,53:435-444.
[8]TAMURA K,KITAMURA K,TANIGUCHI Y,et al.Microstructure and properties of cermets prepared from(Ti,W or Mo,Nb)(C,N)carbonitride solid solution powders[C]//17th International Plansee Seminar.Reutte,Austria:Plansee Holding AG,2009:H/M1-12.
[9]XIONG H,WEN Y,GAN X,et al.Influence of coarse Ti CN content on the morphology and mechanical properties of ultrafine Ti CN-based cermets[J].Materials Science and Engineering A,2017,682:648-655.
[10]WANG L,ZHANG J,JIANG W.Recent development in reactive synthesis of nanostructured bulk materials by spark plasma sintering[J].International Journal of Refractory Metals and Hard Materials,2013,39(7):103-112.
[11]WANG J.Effect of Nb C on the microstructure and sinterability of Ti(C0.7,N0.3)-based cermets[J].International Journal of Refractory Metals and Hard Materials,2009,27(3):549-551.
[12]MATSUDA T,MATSUBARA H.Synthesis of titanium carbonitride nano-powder by carbothermal reduction of Ti O2[J].International Journal of Refractory Metals and Hard Materials,2014,42(1):1-8.
[13]MONTEVERDE F,MEDRI V,BELLOSI A.Microstructure of hot-pressed Ti(C,N)-based cermets[J].Journal of the European Ceramic Society,2002,22(14):2587-2593.
[14]LI P,YE J,LIU Y,et al.Study on the formation of core-rim structure in Ti(CN)-based cermets[J].International Journal of Refractory Metals and Hard Materials,2012,35(1):27-31.
[15]JIN Y,LIU Y,WANG Y,et al.Study on phase evolution during reaction synthesis of ultrafine(Ti,W,Mo,V)(CN)-Ni composite powders[J].Materials Chemistry and Physics,2009,118(1):191-196.
[16]XIANG D P,LIU Y,TU M J,et al.Synthesis of nano Ti(C,N)powder by mechanical activation and subsequent carbothermal reduction-nitridation reaction[J].International Journal of Refractory Metals and Hard Materials,2009,27(1):111-114.
[17]RONG P,LIU Y,YE J,et al.Synthesis of(Ti,W,Mo,Ta,Cr)(C,N)solid solution powders by carbothermal reductionnitridation in an open system[J].Journal of Alloys and Compounds,2017,718:425-432.