本文通过分析光学材料中光谱与温度之间的关系证实了晶体生长过程中的相变团簇模型,认为晶体内部热辐射流是引起固-液界边界层温度场发生传导的可能原因.引入了前结晶的概念,并结合实际中的不同晶体生长方法讨论了包裹体及气泡的抑止机理,通过计算得到了生长理想晶体的最大生长速率并且解释了由于界面层的摆动使得晶体生长过程中产生的微气泡没有被移动的界面层所捕获.
Here we substantiate the cluster model of phase transition in crystal growth processes by the analysis of the spectral-temperature dependence of a broad class of optical materials. Consideration of the structure of internal radiation flow made it possible to explain the conduct of temperature field in boundary layers at the solid-liquid interface. The concept of precrystallization is introduced, its extent evaluated and, for different growth methods, the mechanism of the behavior of inclusions and gas bubble entrapment or rejection is examined. The maximum possible growth rate is defined as the point at which crystal structure remains perfect and micro-bubbles are not captured by the moving interface boundary. This maximum possible growth rate is qualitatively evaluated. Reasons for the interface boundary oscillatory motions are explained.
参考文献
| [1] | Sovremennaya Kristallografia (Russian)[M].Moscow:Nauka,1980 |
| [2] | Gilman J J.The Art and Science of Growing Crystals[M].New York-London:John Wiley and Sons,Inc,1968 |
| [3] | Kidyarov B I.Kinetika Obrazovania Kristallov Iz Zhidkoy Fazy (Russian)[M].Novosibirsk:Nauka,1979 |
| [4] | Dobrovinskaya E R.Upravlenie Strukturnym Sovershenstvom Monokristallov Korunda (Russian)[M].Moscow:Niitechim,1979 |
| [5] | Dobrovinskaya E R;Litvinov L A;Pishchik V V .Structural Defects and Their Genesis in Corundum Monocrystals[J].Crystal Research and Technology,1984,19(02) |
| [6] | Dobrovinskaya E R;Pishchik V V .Sviaz' Mechanizma Peremescheniya Mezhfazno Granitsy Problem Polucheniya Kristallov Szadannym Raspredeleniem Strukturnykh Defektov[J].Izvestia Academii Nauk SSSR Seria Fizicheskaya(Russian,Moscow),1985,49(12) |
| [7] | P. I. Antonov;S. I. Bakholdin;L. L. Kuandykov;J. K. Linhart .Phenomenon of Thermal-Field Jumps in Growth of Single-Crystal Sapphire Ribbons by the Stepanov and Horizontal Directional-Crystallization Methods[J].Crystallography reports,2004(2):246-255. |
| [8] | Linhart J. .Inversion of the temperature field in optical crystals[J].Crystal Research and Technology: Journal of Experimental and Industrial Crystallography,2002(8):849-867. |
| [9] | Siegel R;Howell J R.Thermal Radiation Heat Transfer[M].New York:McGraw-Hill,1981 |
| [10] | Sparrow E M;Cess R D.Radiation Heat Transfer[M].Belmont:California,1971 |
| [11] | Ozicik M N.Radiative Transfer and Interactions with Conduction and Convection[M].New York:Wiley,1973 |
| [12] | Viskanta R;Anderson E E;Irvine T F;Hartnett J P.Advances in Heat Transfer[M].New York:Academic Press,Inc,1975 |
| [13] | Rafalovich I M.Teploperedacha Rasplavakh,Rastvorakh Futerovke Pechey Apparatov (Russian)[M].Moscow:Energia,1977:304. |
| [14] | Linhart J K;Petrov V A;Tikhonova N A.Teplofizika Vysokikh Temperature (Russian)[M].,1982 |
| [15] | Linhart J K;Petrov V A;Tikhonova N A.Teplofizika Vysokikh Temperature (Russian)[M].,1982 |
| [16] | Linhart J K;Petrov V A;Tikhonova N A.Teplofizika Vysokikh Temperature (Russian)[M].,1987 |
| [17] | Kizel' V A.Otrazhenie sveta (Russian)[M].Moscow:Nauka,1973:352. |
| [18] | Elementarnye Protsessy Rosta Kristallov Sbornik Statey "Inostrannaya literature" (Russian)[J].Moscow,1959:300. |
| [19] | Lodise R;Parker R.Rost kristallov (Russian)[M].Moscow:Mir,1974:420. |
| [20] | Dobrovinskaya E R;Litvinov L A;Pishchik V V.Monokristally Korunda (Russian)[M].Kiev:Naukova Dumka,1994:256. |
| [21] | Fisher I Z.Statisticheskaya teoria Zhidkostey (Russian)[M].Moscow:Fizmatgiz,1961:312. |
| [22] | Chalmers B.Principles of solidification (Russian)[M].Moscow:Metallurgia,1968:214. |
| [23] | Braut R.Fazovye perekhody (Russian)[M].Moscow:Mir,1967:286. |
| [24] | Croxton C A.Liquid State Physics-a Statistical Mechanical Introduction[M].London:Cambridge University Press,1974 |
| [25] | Gilman J J.The Art and Science of Growing Crystals[M].New York-London:John Wiley and Sons,Inc,1968:583. |
| [26] | Nye J F.Physical Properties of Crystals[M].Oxford:Clarendon Press,1957:385. |
| [27] | Kittel C.Elementary Solid State Physics[M].New York-London:John Wiley and Sons,Inc,1962:366. |
| [28] | Kittel C.Introduction to Solid State Physics[M].London:John Wiley and Sons Inc,1956:696. |
| [29] | Linhart JK .Teplofizika Vysokikh Temperature (Russian)[J].Moscow,1984,22(06):1134-1141. |
| [30] | Okhotin A S;Zhmakin L I;Ivaniuk A P.Modeli Teploperenosa Kondensirovannykh Sredakh (Russian)[M].Moscow:Nauka,1990:198. |
| [31] | Belaya A N;Dobrovinskaya E R;Litvinov L A;Pishchik V V .Kristallografia (Russian)[J].Moscow,26(01):164-170. |
| [32] | Dobrovinskaya E R;Pishchik V V;Fisika kristallizatsii.Sbornik Nauchnykh Trudov (Russian)[M].Kalinin,1986:46-52. |
| [33] | Aronov B I;Linhart J K;Marchenko N V .Teplofizika Vysokikh Temperatur (Russian)[J].Moscow,1984,22(01):111. |
| [34] | Aronov B I;Linhart J K;Marchenko N V .Teplofizika Vysokikh Temperatur (Russian)[J].Moscow,1987,27(04):737-744. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%