Faceted Crystal Growth of Silicon from Undercooled Melt of Si-20 mass%Ni Alloy

Synopsis :Silicon crystal pulling from the melt of Si-45mass%Ni alloy is performed as a model experiment of a silicon solidification refining process with silicon alloy melts. A needle-like silicon crystal is successfully grown, using a seed crystal with a ͗211͘ crystallographic orientation to the pulling direction, which is poly-crystalline contains a large number of twins inside. A rod-type crystal with Si-Ni eutectics engulfed inside is also obtained. Appropriate ranges of melt superheating and pulling velocity for crystal growth are estimated to be from one to five degree Celsius and from 0.018 to 0.15 mm/min, respectively. It is necessary to decrease the pulling velocity to less than 0.03 mm/min for obtaining the sufficient epitaxial growth on the seed crystal.

show abstract

Dendrite Growth of Silicon along the Undercooled Melt Surface of Si-45mass%Ni Alloy

洋祐¹,

実²,

靖³

et al. 2009

Tetsu-to-Hagane

View full text Add to dashboard Cite

Dendrite growth of silicon from the undercooled melt of Si-45mass%Ni alloy was investigated. The dendrite growing along the melt surface was in-situ observed. By changing the cooling rate of the samples, the undercooling was varied from 6.7 to 18.8 K, and the growth velocity of dendrites was measured for different undercooling conditions. Both rod-and wedge-type dendrites grew in a sample, and the growth velocity of the former was slightly larger than that of the latter. Phase-field simulations were carried out in order to estimate the dendrite growth velocity at small undercooling. As the simulations at the undercooling corresponding to experiments were difficult because of the limitation of computational time, the extrapolated values of simulation results were compared with experiments, and both were in good agreement.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Faceted Crystal Growth of Silicon from Undercooled Melt of Si-20 mass%Ni Alloy

Cited by 3 publications

References 31 publications

Metastable solidification mechanisms and micromechanical property modulations of rapidly crystallizing Si66.7Ni33.3 peritectic alloy

Metastable solidification mechanisms and micromechanical property modulations of rapidly crystallizing Si66.7Ni33.3 peritectic alloy

Silicon Crystal Pulling from the Melt of Si-45mass%Ni Alloy

Dendrite Growth of Silicon along the Undercooled Melt Surface of Si-45mass%Ni Alloy

Contact Info

Product

Resources

About