precipitation behavior of light element impurities in cast silicon

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1 Precipitation behavior of light element impurities in cast silicon J.Y. Li, T. Sekiguchi, R.R. Prakash, K. Jiptner, Y. Miyamura, H. Harada, NIMS K. Kakimoto Kyushu Univ. A. Ogura Meiji Univ. BP01 / BIAMS 22-26 June 2014 10 cmφ ingot Light element precipitates Butterf ly

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Precipitation behavior of light element impurities in cast silicon . BP01 / BIAMS 22-26 June 2014. J.Y . Li, T. Sekiguchi , R.R . Prakash , K. Jiptner , Y . Miyamura , H. Harada, NIMS K . Kakimoto Kyushu Univ. A. Ogura Meiji Univ. 10 cmφ ingot. - PowerPoint PPT Presentation

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Page 1: Precipitation  behavior of light element impurities in cast silicon

1

Precipitation behavior of light element impurities in cast silicon   

J.Y. Li, T. Sekiguchi, R.R. Prakash, K. Jiptner, Y. Miyamura, H. Harada, NIMSK. Kakimoto Kyushu Univ. A. Ogura Meiji Univ.

BP01 / BIAMS   22-26 June 2014

10 cmφ ingot  

Light element precipitates  

Butterfly

Page 2: Precipitation  behavior of light element impurities in cast silicon

2

Origin : anomalous convection

Morphology : fiber, filament Chem. nature : Si3N4

C

NSi

N

N500mm

500mm

500mm

500mm