Unidirectional Solidification of Solar Grade Silicon and lmpurities and Themal Stress Control of the Cast

太阳能级硅及杂质的单向凝固及铸件的热应力控制

基本信息

批准号：
11694128
负责人：
KAGAWA Yutaka
金额：
$ 5.63万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11694128/
关键词：
silicon solar cell electron beam melting vacuum melting coagulation refinement simulation continuous casting residual stress 電子b-ム応力シュミレーション

项目摘要

It is known that the quality of the silicon ingot made by the casting method is greatly influenced by the residual stress which exists in the material after solidification. However, the correct measuring method for the residual stress and the evaluating method of the result has not been established enough. The object of this research is to examine the measurement of the residual stress and the relation between the generation situation and the casting process in detail by international cooperation. Silicon was continuously cast with a equipment device that was installed in the Institute of Industrial Science, The University of Tokyo. Samples were made with different casting conditions and the residual stress of these silicon ingots were measured by mean of the neutron diffraction in the Canadian National Atomic Energy Research Institute, Chalk River, Canada. Because of the larger size of the crystal grains in the continuous cast silicon ingots, the measurement of the amount of the strai … More n was difficult with the conventional technique. New measurement technique was developed on the Canadian side, in which isotropy was given with rotating the sample while the neutron diffraction was measuring and was applied to the silicon ingot The model for the estimation of the residual stress of the silicon after continuous cast was developed on The University of Tokyo side. With this model, based on the heat conduction equation and the heat of coagulation, the analysis was done with actual process condition as the boundary condition. This result was compared with the experimental result mentioned above and discussed. In addition, for the shortening the calculation time and further establishment of general calculation technique, new version of the analytical approximation method is developing When the new version is completed, it will be possible to apply it for the online process monitoring of the manufacturing of the silicon continuous cast ingot Furthermore, a larger scale equipment were completed, that was not only the scale improvement of the smaller electron-beam equipment, but a number of improvements were made. By the large scaled electron-beam dissolution equipment, which has two electron beams generators and a large size water-cooled copper hearth, the experiments of silicon refining was performed. The experimental result was success of making 30kg class large-scale silicon ingots Less

众所周知，铸造方法制造的硅铸币厂的质量受到固化后材料中存在的残留应力的很大影响。但是，对于残余应力和结果的评估方法的正确测量方法尚未建立。这项研究的目的是通过国际合作详细详细介绍对残余压力的测量以及发电状况与铸造过程之间的关系。硅不断使用安装在东京大学工业科学研究所中的设备设备。样品是用不同的铸造条件制成的，这些硅锭的残余应力是通过加拿大粉笔河的加拿大国家原子能研究所中性衍射测量的。由于连续铸造的硅锭中的晶粒尺寸较大，因此使用常规技术的strai量的测量很难。在加拿大侧开发了新的测量技术，在中子衍射是测量的同时，在旋转样品中给出了各向同性的方法，并将其应用于硅铸币厂，以估计东京大学连续铸造后硅的残余应力的估计。使用此模型，基于热传导方程和凝结热，分析以实际过程条件为边界条件进行。将此结果与上述实验结果进行了比较，并进行了讨论。此外，为了缩短计算时间并进一步建立一般计算技术，新版本的新版本在新版本完成后正在开发，可以将其应用于在线过程监控硅连续铸造工程制造的在线流程，此外，更大范围的设备还完成了较大规模的设备，这并不是较小的电子设备的尺度改进，而是较小的电子设备，而是数量的数量。通过具有两个电子束发电机和一个大尺寸水冷铜炉灶的大型电子梁溶解设备，进行了硅的实验。实验结果成功地使30公斤级的大规模硅锭较少

项目成果

期刊论文数量（33）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

川添敏, 香川豊: "セラミック-金属接合体の自由端近傍の界面に生じる応力特異性と界面破壊挙動"日本金属学会第128回金属学会講演概要. 431 (2001)

Satoshi Kawazoe、Yutaka Kakawa：“陶瓷-金属键自由端附近界面处发生的应力奇异性和界面断裂行为”第 128 届日本金属材料学会会议摘要 431 (2001)。

DOI：
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影响因子：
0
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S.H.Tabaian, M.Maeda, T.Ikeda, Y.Ogasawara: "Thermodynamic Study of Molten Si-Ti Alloys"High Temperature Materials and Processes. Vol.19, Nos.3&4. 257-264 (2000)

S.H.Tabaian、M.Maeda、T.Ikeda、Y.Ogasawara：“熔融硅钛合金的热力学研究”高温材料和工艺。

DOI：
发表时间：
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影响因子：
0
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M.Maeda, T.Ikeda: "Recycling and Material Flow of the World"Polymers for Advanced Technologies, Wiley. 388-391 (2000)

M.Maeda、T.Ikeda：“世界回收和物质流”先进技术聚合物，Wiley。

DOI：
发表时间：
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影响因子：
0
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Recycling and Material Flow of the World

世界回收与物质流动

DOI：
发表时间：
2001
期刊：
Polymers for Advanced Technologies
影响因子：
3.4
作者：
M.Maeda;T.Ikeda
通讯作者：
T.Ikeda

The EB Purification of Silicon

硅的 EB 纯化

DOI：
发表时间：
2000
期刊：
Abstract of Electron Beam Melting and refining-state of the art 2000 millennium conference
影响因子：
0
作者：
T.Ikeda;N.Nishikawa;N.Yamauchi;K.Miyazaki;H.Hattori;Y.Shinoda
通讯作者：
Y.Shinoda