Zirconia nanoparticle reinforced Al-Si-cu alloy based composite for low temperature brazing applications

Myung Hwan Roh, Ashutosh Sharma, Dong Uk Lim, Jae Pil Jung

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this study, the composite approach was used to develop ZrO2 nanoparticles (mean diameter ∼100 nm) reinforced Al-Si-Cu filler alloys with low melting point and improved spreadability. The bulk samples were synthesized by vacuum melting and casting route. Differential thermal analysis of filler metals was conducted to measure the melting temperature, and the corresponding microstructures were observed. The thermal analysis results showed that the liquidus temperature of Al-Si-Cu filler metals was around 535°C. In addition, the microstructure of the brazing filler was refined up to an optimum concentration of high energy ZrO2 nanoparticles in the matrix. The thickness of intermetallic compounds (IMCs) in the matrix, i.e., CuAl2, Al-Si and Al-Si-Cu were also found to decrease due to the presence of ZrO2 nanoparticles. The composite brazing fillers developed in this study show an increase in spreading ratio greater than 90 % as compared to the monolithic alloy.

Original languageEnglish
Title of host publicationProceedings - TORONTO'2015 AES-ATEMA 25th International Conference on Advancesand Trends in Engineering Materials and their Applications, ATEMA TORONTO 2015
EditorsYehia M. Haddad
PublisherAdvanced Engineering Solutions
Pages77-84
Number of pages8
ISBN (Electronic)9781927838143
StatePublished - 2015
Event25th International Conference on Advancesand Trends in Engineering Materials and their Applications, ATEMA TORONTO 2015 - Toronto, Canada
Duration: 10 Aug 201514 Aug 2015

Publication series

NameAES-ATEMA International Conference Series - Advances and Trends in Engineering Materials and their Applications
Volume10-14-August-2015
ISSN (Print)1924-3642

Conference

Conference25th International Conference on Advancesand Trends in Engineering Materials and their Applications, ATEMA TORONTO 2015
Country/TerritoryCanada
CityToronto
Period10/08/1514/08/15

Keywords

  • Brazing
  • Composite
  • Filler
  • Melting
  • Nanoparticles
  • Spreadability
  • Zirconia

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