[ Papers ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 29, No. 1, pp.17-21

ISSN: 2508-5107 (Online)

Print publication date 15 Feb 2020

Received 08 Jan 2020 Revised 28 Jan 2020 Accepted 31 Jan 2020

DOI: https://doi.org/10.7735/ksmte.2020.29.1.17

가스용탕반응법에 의한 Al-ALN 복합재 제조시 교반기 내의 유동장 해석

윤주일^a^{, *}

A Velocity Field Analysis of Al-AlN Composite Fabrication in an Agitator by Gas Melt Reactions

Juil Yoon^a^{, *}

aDepartment of Mechanical System Engineering, Hansung University

Correspondence to: ^*Tel.: +82-2-760-8008 E-mail address: juilyoon@hansung.ac.kr (Juil Yoon).

Abstract

The fabrication of Al-AlN composites by gas melt reactions has great potential since it involves a simple manufacturing process and has the ability to achieve a superior composite interface. This paper describes a velocity field analysis of an agitator system for the fabrication of Al-AlN composites. Based on the analysis, while sufficient particle velocities were achieved in the lower end of the stirrer when the AlN fraction of the composites was < 10%, the average velocity of AlN particles decreased rapidly with agitation time. However, the velocity field was not sufficiently developed with higher AlN fractions. Therefore, it is necessary to modify the stirring conditions for high fraction Al-AlN composite materials.

Keywords:

Al-AlN composite, Velocity field, Agitator, Gas reaction control

Acknowledgments

이 연구는 한성대학교 연구비 지원과제로 연구되었음.

References

Zweben, C., 1998, Advances in Composite Materials for Thermal Management in Electronic Packaging, Journal of the Minerals, Metals and Materials Society, 50 47-51. [https://doi.org/10.1007/s11837-998-0128-6]
Hou, Q., 1995, Feasibility of Aluminium Ntride Formation in Aluminum Alloys, Materials Science and Engineering A, 195 121-129. [https://doi.org/10.1016/0921-5093(94)06511-X]
Taheri-Nassj, E., Kobashi, M., Choh, T., 1995, Fabrication of an AlN Particulate Aluminium Matrix Composite by a Melt Stirring Method, Scripta Mater., 32:12 1923-1929. [https://doi.org/10.1016/0956-716X(95)00083-8]
Tajika, M., Matsubara, H., Rafaniello, W., 1999, Microstructural Development in AlN Composite Ceramics, Nanostructured Mater., 12:1-4 131-134. [https://doi.org/10.1016/S0965-9773(99)00081-1]
Kim, J. D., Euh, K. J., Lee, J. M., Kang, S. B., 2003, Fabrication of AlN/Al Composites by Gas-Melt in-situ Reactions, J. Kor. Inst. Met. & Mater., 41:5 313-320.
Kumari, S. S. S., Pillai, U. T. S., Pai, B. C., 2011, Synthesis and Characterization of in situ Al-AlN Composite by Nitrogen Gas Bubbling Method, J. Alloys. Compounds, 509:5 2503-2509. [https://doi.org/10.1016/j.jallcom.2010.11.065]
Yoon, J., 2018, Prediction Thermo-mechanical Characteristics due to 2nd Phase Fraction of Al-AlN Composite for LED Heat Sink using FEM, Journal of the Korean Society of Manufacturing Process Engineers, 17:5 137-142. [https://doi.org/10.14775/ksmpe.2018.17.5.137]
Yoon, J., 2019, Prediction of Thermal Expansion Coefficients using the Second Phase Fraction and Void of Al-AlN Composites Manufactured by Gas Reaction Method, Journal of the Korean Society of Manufacturing Process Engineers, 18:4 41-47. [https://doi.org/10.14775/ksmpe.2019.18.4.041]

Juil Yoon

Professor in the Department of Mechanical System Engineering, Hansung University.His research interest is Thermo-mechanical reliability of microelectronic devices and micro-systems, Mechanics of the micro/nano structures in flexible macroelectronics, 3D Printing systems.

E-mail: juilyoon@hansung.ac.kr