钐铁合金熔体渗氮中主要影响因素的研究
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摘要
通过氧氮氢分析仪,XRD,SEM等手段研究了钐铁合金熔体渗氮实验过程中温度、时间、底吹流量等因素对渗氮含量的影响。结果表明:钐铁合金中的渗氮量随渗氮时间和渗氮流量的增加而增加,渗氮时间在20~60 s时,渗氮量增加的比较迅速,60~100 s时渗氮量增加相对比较缓慢;随着熔炼温度的升高,钐铁合金的渗氮量逐渐增加,渗氮温度为1470,1490,1510,1560℃时,其渗氮量分别为0.13%,0.40%,0.48%,0.70%。
The effects of temperature,time and bottom flow rate on the nitrogen content was researched during the nitriding experiment of Sm-Fe alloy through the oxygen nitrogen analyzer,XRD,SEM etc. The results showed that the amount of nitriding in Sm-Fe alloy increases with the time of nitriding and the increase of nitriding flux. When the nitriding time is 20 ~ 60 s,the amount of nitriding increases rapidly and at 60 ~ 100 s,the nitriding increase slowly. The nitriding rate of Sm-Fe alloy increased gradually with the increase of melting temperature. The nitriding temperature is 1470,1490,1510 and 1560 ℃,while the nitriding content is 0. 13%,0. 40% and 0. 48%,0. 70% respectively.
The effects of temperature,time and bottom flow rate on the nitrogen content was researched during the nitriding experiment of Sm-Fe alloy through the oxygen nitrogen analyzer,XRD,SEM etc. The results showed that the amount of nitriding in Sm-Fe alloy increases with the time of nitriding and the increase of nitriding flux. When the nitriding time is 20 ~ 60 s,the amount of nitriding increases rapidly and at 60 ~ 100 s,the nitriding increase slowly. The nitriding rate of Sm-Fe alloy increased gradually with the increase of melting temperature. The nitriding temperature is 1470,1490,1510 and 1560 ℃,while the nitriding content is 0. 13%,0. 40% and 0. 48%,0. 70% respectively.
引文
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[13]杨梦琳,潘晶,刘新才,董鸣月,徐山雪,董友仁.熔体过热对Nd9Fe70Ti4C2B15纳米复合永磁合金过冷度、非晶形成能力和晶化行为的影响[J].中国稀土学报,2016,34(3):276.Yang M L,Pan J,Liu X C,Dong M Y,Xu S X,Dong Y R.Effects of melt overheating on undercooling degree,glass forming ability and crystallization behavior of Nd9Fe70Ti4C2B15permanent magnetic alloy[J].Journal of the Chinese Society of Rare Earths,2016,34(3):276.
[14]盛洪超,靳朝相,顾小燕.单辊快淬法制备高性能各向异性Nd2Fe14B/α-Fe纳米复相永磁材料[J].中国稀土学报,2015,33(1):51.Sheng H C,Jin C X,Gu X Y.Anisotropic Nd2Fe14B/α-Fe nanocomposite magnets fabricated by single-roller rapid quenching[J].Journal of the Chinese Society of Rare Earths,2015,33(1):51.
[15]叶金文,刘颖,郑华雄,陈先富,廖立.Sm2Fe17Nx的结构精修分析[J].稀有金属材料与工程,2011,40(6):2.Ye J W,Liu Y,Zheng H X,Chen X F,Liao L.Crystal parameters of Sm2Fe17Nxanalysis by rietveled method[J].Rare Metal Materials and Engineering,2011,40(6):2.
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[3]罗阳.Sm Fe7金属间化合物—新一代磁体的希望[J].粉末冶金工业,2000,5(10):26.Luo Y.Sm Fe7intermetallic compound-the hope of new generation of magnets[J].Powder Metallurgy Industry,2000,5(10):26.
[4]Sezkely J,Wang H J,Kaiser K M.Flow pattern velocity and turbulence energy measurement and prediction in a water model of and argon-stirred ladle[J].Metall.Mater.Trans.B,1976,7(2):287.
[5]Szekely J,Lehner T,Chang C W.Flow phenomena,mixing and mass transfer in argon-stirred ladles[J].Ironmaking Steelmaking,1979,6(6):285.
[6]车得福,林宗虎,陈学俊.气泡在液体中形成的试验研究[J].钢铁研究学报,1994,6(1):9.Che D F,Lin Z H,Chen X J.Experimental investigation on bubble formation in a liquid[J].Journal of Iron and Steel Research,1994,6(1):9.
[7]车得福,李会雄.多相流及其应用[M].西安:西安交通大学出版社,2007.1.Che D F,Li H X.Multiphase Flow and Its Applications[M].Xi'an:Xi'an Jiao Tong University Press,2007.1.
[8]王书桓,袁亮亮,赵定国,高爱民,宋春燕,李彬.Sm2Fe17型合金氮化工艺的研究进展[J].中国稀土学报,2017,35(3):318.Wang S H,Yuan L L,Zhao D G,Gao A M,Song C Y,Li B.Research progress on nitrogenization of Sm2Fe17alloy[J].Journal of the Chinese Society of Rare Earths,2017,35(3):318.
[9]Zhang D T,Geng W T,Yue M.Magnetic properties and thermal stability of Mn Bi/Sm Fe N hybrid bonded magnets[J].J.Appl.Phys.,2014,115(17):17A746.
[10]陈爱萍,金红明,朱明原,张慧友.制备高矫顽力Sm2Fe17Nx磁粉的氮化工艺与性能研究[J].上海大学学报(自然科学版),1999,5(2):128.Chen A P,Jin H M,Zhu M Y,Zhang H Y.Nitriding technology and properties of high coercitive magnetic powder Sm2Fe17Nx[J].Journal of Shanghai University(Natural Science),1999,5(2):128.
[11]Zinkevich M,Mattern N,Handstein A,Gutfleisch O.Thermodynamics of Fe-Sm,Fe-H,and H-Sm systems and its application to the hydrogen-disproportionation-desorption-recombination(HDDR)process for the system Fe17Sm2H2[J].J.Alloys Compd.,2002,339(6):118.
[12]张勇,王艳,刘新才,潘晶,王红玉,潘建峰,董友仁,龙能兵,李天华.纳米晶Nd10.5Pr2.5Fe80Nb1B6快淬薄带织构及其形成机制[J].中国稀土学报,2016,34(1):27.Zhang Y,Wang Y,Liu X C,Pan J,Wang H Y,Pan J F,Dong Y R,Long N B,Li T H.Texture forming mechanism of nanocrystalline Nd10.5Pr2.5Fe80Nb1B6meltspun ribbons[J].Journal of the Chinese Society of Rare Earths,2016,34(1):27.
[13]杨梦琳,潘晶,刘新才,董鸣月,徐山雪,董友仁.熔体过热对Nd9Fe70Ti4C2B15纳米复合永磁合金过冷度、非晶形成能力和晶化行为的影响[J].中国稀土学报,2016,34(3):276.Yang M L,Pan J,Liu X C,Dong M Y,Xu S X,Dong Y R.Effects of melt overheating on undercooling degree,glass forming ability and crystallization behavior of Nd9Fe70Ti4C2B15permanent magnetic alloy[J].Journal of the Chinese Society of Rare Earths,2016,34(3):276.
[14]盛洪超,靳朝相,顾小燕.单辊快淬法制备高性能各向异性Nd2Fe14B/α-Fe纳米复相永磁材料[J].中国稀土学报,2015,33(1):51.Sheng H C,Jin C X,Gu X Y.Anisotropic Nd2Fe14B/α-Fe nanocomposite magnets fabricated by single-roller rapid quenching[J].Journal of the Chinese Society of Rare Earths,2015,33(1):51.
[15]叶金文,刘颖,郑华雄,陈先富,廖立.Sm2Fe17Nx的结构精修分析[J].稀有金属材料与工程,2011,40(6):2.Ye J W,Liu Y,Zheng H X,Chen X F,Liao L.Crystal parameters of Sm2Fe17Nxanalysis by rietveled method[J].Rare Metal Materials and Engineering,2011,40(6):2.