利用原子尺寸因数和电子因素构成键参数坐标系统,研究了原子尺寸因数和电子因素对准晶形成的影响.对13个稀土金属(La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Yb,Lu)基,已有实验结果的55个准晶进行了系统的研究.研究结果表明,在以原子尺寸因素和电子因素为坐标的键参数图中,准晶合金形成区与非形成区明显区分开,准确率为98.18%,区分边界可用一条抛物曲线描述,曲线方程为y=a-bx2,参数a、b可以由基体元素的相关参数确定,a∝E,b∝EμR30.该方法为定性研究及寻找新型稀土金属基准晶合金开辟了一条新的途径,在材料研究领域具有理论指导意义.
参考文献
| [1] | 董闯.准晶材料[M].北京:国防工业出版社,1998 |
| [2] | Jeevan HS.;Ranganathan S. .A new basis for the classification of quasicrystals[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2004(0):184-189. |
| [3] | 羌建兵,王英敏,陈伟荣,董闯.Al基三元准晶相图的电子浓度特征[J].材料研究学报,2002(05):500-506. |
| [4] | Athanasiou NS.;Politis C.;Spirlet JC.;Baskoutas S.;Kapaklis V. .The significance of valence electron concentration on the formation mechanism of some ternary aluminum-based quasicrystals[J].International Journal of Modern Physics, B. Condensed Matter Physics, Statistical Physics, Applied Physics,2002(31):4665-4683. |
| [5] | Villars P;Phillips J C;Chen H S .Icosahedral quasicrystals and quantum structural diagrams[J].Physical Review Letters,1986,57:3085-3088. |
| [6] | 王玲玲,黄维清,邓辉球,李小凡,唐黎明,赵立华.准晶合金形成规律的探讨[J].稀有金属材料与工程,2003(11):889-892. |
| [7] | Smithells C J.Metals reference book[M].London:Butherworths,1976 |
| [8] | 陈念贻.键参数函数及其应用[M].北京:科学出版社,1976 |
| [9] | Pauling L.The nature of the chemical bond[M].Ithaca:Cornell University,1960 |
| [10] | 桂许春,廖树帜,谢浩文,张邦维.第四过渡族金属基准晶形成规律的抛物线模型[J].稀有金属材料与工程,2006(07):1080-1084. |
| [11] | Gschneidner K A;F Seitz;D Turnbull.Solid State Physics[M].New York:Academic Press,Inc,1965 |
| [12] | Kittel C.Introduction to Solid State Physics[M].New York:Wiley,1976 |
| [13] | Charrier B;Ouladdiaf B;Schmitt D .Observation of quasimagnetic structures in rare-earth-based icosahedral quasicrystals[J].Physical review letters,1997(24):4637-4640. |
| [14] | Sato TJ.;Tsai AP.;Abe E. .Decagonal quasicrystals in the Zn-Mg-R alloys (R = rare-earth and Y)[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(0):867-870. |
| [15] | Fisher I R;Kramer M J;Goldman A I .Recent advances in the study of quasicrystals[J].Micron,2000,31:469-473. |
| [16] | Guo J.;Tsai AP.;Abe E. .Stable icosahedral quasicrystals in the Cd-Mg-RE (RE = rare earth element) systems[J].Japanese journal of applied physics,2000(8A):L770-L771. |
| [17] | 陈敬中.准晶结构及对称新理论[M].武汉:华中科技大学出版社,1996 |
| [18] | 周公度;郭可信.晶体和准晶体的衍射[M].北京:北京大学出版社,1992 |
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