Detail publikace

Effects of solid lubricants on properties of Al-Si-SiC composite powder produced by gas atomization technique

RUDIANTO, H. YANG, S. KIM, Y. DLOUHÝ, I. CAESARENDRA, W.

Anglický název

Effects of solid lubricants on properties of Al-Si-SiC composite powder produced by gas atomization technique

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

en

Originální abstrakt

Al-Si-SiC composites powder was analyzed in this research. The powder was made by gas atomizing process. Powder characterization was done to observe its morphology, particle size distribution and thermal properties. Effects of lubricants were intensively investigated in this research with compositions and pressure variables. It is assumed that higher amount of solid lubricant put into the powder, the lower ejection force needed to take out compacted powder. Finding appropriate solid lubricant is necessary to improve green and sintering properties. EBS (ethylene bis stearamide), aluminum stearate, zinc stearate and paraffin wax were used for investigation. Sintering under ultra high purity nitrogen gas 99.9999% was carried out to produce high density material. SEM-EDS and XRD were carried to characterize this powder. SiC particles in this powder prohibit to achieve optimum sintering properties of Al-Si-SiC due to their resistance during compaction which leads to form pores and lower sintering density. And ethylene bis stearamide (EBS) seems to be suitable solid lubricant for this powder by giving lower ejection force, flowability and higher sintering density for 93.5%.

Anglický abstrakt

Al-Si-SiC composites powder was analyzed in this research. The powder was made by gas atomizing process. Powder characterization was done to observe its morphology, particle size distribution and thermal properties. Effects of lubricants were intensively investigated in this research with compositions and pressure variables. It is assumed that higher amount of solid lubricant put into the powder, the lower ejection force needed to take out compacted powder. Finding appropriate solid lubricant is necessary to improve green and sintering properties. EBS (ethylene bis stearamide), aluminum stearate, zinc stearate and paraffin wax were used for investigation. Sintering under ultra high purity nitrogen gas 99.9999% was carried out to produce high density material. SEM-EDS and XRD were carried to characterize this powder. SiC particles in this powder prohibit to achieve optimum sintering properties of Al-Si-SiC due to their resistance during compaction which leads to form pores and lower sintering density. And ethylene bis stearamide (EBS) seems to be suitable solid lubricant for this powder by giving lower ejection force, flowability and higher sintering density for 93.5%.

Klíčová slova anglicky

Aluminum matrix composites; Powder metallurgy; Green properties; Sintering

Vydáno

29.09.2020

Nakladatel

CHULALONGKORN UNIV, METALLURGY & MATERIALS SCIENCE RESEARCH INST

Místo

BANGKOK

ISSN

0857-6149

Ročník

30

Číslo

3

Strany od–do

55–63

Počet stran

9

BIBTEX


@article{BUT170688,
  author="Haris {Rudianto} and Sang Sun {Yang} and Yong Jin {Kim} and Ivo {Dlouhý} and Wahyu {Caesarendra},
  title="Effects of solid lubricants on properties of Al-Si-SiC composite powder produced by gas atomization technique",
  year="2020",
  volume="30",
  number="3",
  month="September",
  pages="55--63",
  publisher="CHULALONGKORN UNIV, METALLURGY & MATERIALS SCIENCE RESEARCH INST",
  address="BANGKOK",
  issn="0857-6149"
}