欢迎登录材料期刊网

材料期刊网

高级检索

采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、差热分析(DTA)等方法研究了高能球磨及热处理等对新型合金LaNi5-34%(质量分数)Mg的相组成、形貌及热稳定性能等的影响.结果表明:经100r/min球磨100h及190r/min球磨100h后,样品由La、Mg、Ni等非晶,微量的晶体Ni和MgNi2相组成,所得粉末的形状大多为规则的球形或近球形,其颗粒直径范围为0.05~33.0μm.球磨样品具有较好的室温活化特性,其最大电化学放电容量为460mAh/g.该样品经763K保温35d后,得到热稳定性较好的具有纳米尺度的MgNi2、Mg2Ni、Mg2NiLa三相组织,其平均晶粒直径为21.3nm.

参考文献

[1] Takahashi Y;Yukawa H;Morinaga M .[J].Journal of Alloys and Compounds,1996,242:98-107.
[2] Yamamoto K;Orimo S;Fujii H et al.[J].Journal of Alloys and Compounds,1999,293-295:546-551.
[3] Zaluski L;Zaluska A;Strom-Olsen J O .[J].Journal of Alloys and Compounds,1995,217:245-249.
[4] Tsushio Y.;Enoki H.;Akiba E.;Tessier P. .Hydrogenation properties of Mg(1-x)M1(x)Cu(2) (M1 = La and Nd) with larger interstitial sites than MgCu2[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):262-264.
[5] Nohara S.;Zhang SG.;Inoue H.;Iwakura C.;Hamasaki K. .Electrochemical characteristics of an amorphous Mg0.9V0.1Ni alloy prepared by mechanical alloying[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):104-106.
[6] Reule H;Hirscher M;Werhardt A et al.[J].Journal of Alloys and Compounds,2000,305:246-252.
[7] Gross K J;Spatz P;Züttel A et al.[J].Journal of Alloys and Compounds,1997,261:276-280.
[8] Davidson D J;Sai Raman S S;Srivastava O N .[J].Journal of Alloys and Compounds,1999,292:194-201.
[9] Sun D;Enoki H;Bououdina M et al.[J].Journal of Alloys and Compounds,1999,282:252-257.
[10] Sun D;Gingl F;Enoki H et al.[J].Acta Materialia,2000,48:2363-2372.
[11] Abdellaouoi M;Cracco D;Percheron Guegan A .[J].Journal of Alloys and Compounds,1998,268:233-240.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%