Investigation of particle impact phenomena in powder jet deposition process

Chihiro Nishikawa, Koichi Mizutani, Tianfeng Zhou, Jiwang Yan, Tsunemoto Kuriyagawa

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

Powder jet deposition (PJD) method is one of the blasting methods to generate surface coatings. The optimization of PJD conditions has been reported in our previous research. However, the deposition mechanism in PJD is still under investigation. Impact phenomena between an alumina particle with the mean particle size of 2 μm and a glass substrate has been successfully simulated by smoothed particle hydrodynamics (SPH) method. From the simulation result, we have deduced that a cubic particle is fractured by an impact, and it is adhered on to the substrate. It has been also deduced that substrate is removed by a spherical particle impact. Furthermore, PJD experiments of alumina particles blasted onto a glass substrate were also conducted. The particle size distribution of rectangular particles before and after impact was measured. It was found that the particle sizes after impact averagely became smaller than those before impact. The substrate was partly removed when spherical particles impact. From the results of the simulation and the experiment, we believe that the rectangular particles are fractured due to the impacts at the moment blasting onto the substrate, and then, firmly deposited on the substrate.

本文言語English
ホスト出版物のタイトルEmerging Technology in Precision Engineering XIV
出版社Trans Tech Publications Ltd
ページ184-189
ページ数6
ISBN(印刷版)9783037855096
DOI
出版ステータスPublished - 2012
外部発表はい
イベント14th International Conference on Precision Engineering, ICPE 2012 - Hyogo, Japan
継続期間: 2012 11月 82012 11月 10

出版物シリーズ

名前Key Engineering Materials
523-524
ISSN(印刷版)1013-9826
ISSN(電子版)1662-9795

Other

Other14th International Conference on Precision Engineering, ICPE 2012
国/地域Japan
CityHyogo
Period12/11/812/11/10

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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