Control of impurities transport in an industrial directional solidification furnace for silicon ingots basing on computer modeling

ABSTRACTA numerical model of heat transfer by combined conduction, radiation and convection was developed using the FIDAP finite element code for NASA's Advanced Automated Directional Solidification Furnace (AADSF). The prediction of the temperature gradient in an ampoule with HgCdTe is a necessity for the evaluation of whether or not the temperature set points for furnace heaters and the details of cartridge design ensure optimal crystal growth conditions for this material and size of crystal. A prediction of crystal/melt interface shape and the flow patterns in HgCdTe are available using a separate complementary model.

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Morphological Characteristics of W-Nanowires after Selective Etching

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1004-1005.24 ◽

2014 ◽

Vol 1004-1005 ◽

pp. 24-27

Author(s):

Wen Jia Wang ◽

Zhi Long Zhao ◽

Ming Tang ◽

Jian Jun Gao

Keyword(s):

Growth Rate ◽

Temperature Gradient ◽

Directional Solidification ◽

Morphological Characteristics ◽

Selective Dissolution ◽

Stability Diagram ◽

Selective Etching ◽

Directionally Solidified ◽

Solidification Furnace ◽

Nial Matrix

An eutectic NiAl–1.5 at.% W alloy prepared by using directionally solidified (DS)was employed as a source for producing W-nanowires. Several growth rate of 8,15,25/s was respectively used at a temperature gradient of ~240 K/cm in a Bridgman-type directional solidification furnace. A combined stability diagram was applied to predict proper conditions for the selective dissolution of NiAl matrix to get W-wires. Etching in a mixture of HCl:H2O2released parallel aligned W-nanowires with a wire diameter of ~500 nm. Different morphologies, such as nanobelts, lotus-shaped, conical of W-nanowires are obtained at the different conditions.

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Advanced automated directional solidification furnace

10.1117/12.244347 ◽

1996 ◽

Cited By ~ 1

Author(s):

Donald C. Gillies ◽

F. A. Reeves ◽

L. B. Jeter ◽

J. D. Sledd ◽

John W. Cole ◽

...

Keyword(s):

Directional Solidification ◽

Solidification Furnace

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Local design of the hot-zone in an industrial seeded directional solidification furnace for quasi-single crystalline silicon ingots

Journal of Crystal Growth ◽

10.1016/j.jcrysgro.2012.07.039 ◽

2012 ◽

Vol 358 ◽

pp. 5-11 ◽

Cited By ~ 41

Author(s):

Qinghua Yu ◽

Lijun Liu ◽

Wencheng Ma ◽

Genxiang Zhong ◽

Xinming Huang

Keyword(s):

Directional Solidification ◽

Crystalline Silicon ◽

Single Crystalline Silicon ◽

Single Crystalline ◽

Solidification Furnace ◽

Hot Zone

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Effect of Partial Replacement of Retort with an Insulation Material on Mc-Silicon Grown in Directional Solidification Furnace: Numerical Modeling

Silicon ◽

10.1007/s12633-021-01538-x ◽

2022 ◽

Author(s):

T. Keerthivasan ◽

G. Aravindan ◽

M. Srinivasan ◽

P. Ramaswamy

Keyword(s):

Numerical Modeling ◽

Directional Solidification ◽

Partial Replacement ◽

Insulation Material ◽

Solidification Furnace

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INFLUENCE OF GROWTH RATE ON MICROSTRUCTURE AND MICROINDENTATION HARDNESS OF DIRECTIONALLY SOLIDIFIED TIN–CADMIUM EUTECTIC ALLOY

Surface Review and Letters ◽

10.1142/s0218625x09012494 ◽

2009 ◽

Vol 16 (02) ◽

pp. 191-201 ◽

Cited By ~ 2

Author(s):

E. ÇADIRLI ◽

H. KAYA ◽

M. GÜNDÜZ

Keyword(s):

Growth Rate ◽

Temperature Gradient ◽

Directional Solidification ◽

Constant Temperature ◽

Eutectic Alloy ◽

Directionally Solidified ◽

Constant Temperature Gradient ◽

Microindentation Hardness ◽

Solidification Furnace ◽

Eutectic Melt

Sn – Cd eutectic melt was first obtained in a hot filling furnace and then directionally solidified upward with different growth rate ranges (8.1–165 μm/s) at a constant temperature gradient G (4.35 K/mm) in the Bridgman-type directional solidification furnace. The lamellar spacings (λ) were measured from both transverse and longitudinal sections of the samples. The influence of the growth rate (V) on lamellar spacings (λ) and undercoolings (Δ T) was analyzed. λ2V, ΔTλ and ΔTV-0.5 values were determined by using λ,ΔT and V values. Microindentation hardness (HV) was measured from both transverse and longitudinal sections of the specimens. HV values increase with the increasing values of V but decrease with increasing λ values. λ-V, λ - ΔT and λ2V results have been compared with the Jackson–Hunt eutectic model and similar experimental results, HV - V and HV - λ results were also compared with the previous work.

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A Study on Shape Memory Performance of Cu-Al-Ni-Be Alloy Single Crystal

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.287-290.21 ◽

2011 ◽

Vol 287-290 ◽

pp. 21-25

Author(s):

Hua Ping Xu ◽

Gao Feng Song ◽

Xie Min Mao

Keyword(s):

High Temperature ◽

Temperature Gradient ◽

Shape Memory Alloy ◽

Single Crystal ◽

Shape Memory ◽

Directional Solidification ◽

Memory Performance ◽

Copper Base ◽

Shape Memory Properties ◽

Solidification Furnace

In this paper, single crystal of CuAlNiBe quaternary shape memory alloy was prepared in a high temperature gradient directional solidification furnace with a selective growing crystallizer. And its shape memory performance characters were systematically compared with other series copper base shape memory alloys. The results show that the single crystal of CuAlNiBe quaternary shape memory alloy has better shape memory properties.

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