Coating formation by high-velocity impacts of solid powder particles

2009 Fiscal Year Final Research Report

• Project/Area Number: 19360335
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Material processing/treatments
• Research Institution: National Institute for Materials Science
• Principal Investigator: KURODA Seiji National Institute for Materials Science, ハイブリッド材料センター, センター長 (50354220)
• Co-Investigator(Kenkyū-buntansha): WATANABE Makoto 独立行政法人物質・材料研究機構, ハイブリッド材料センター, 主任研究員 (00391219) ; ISOMOTO Yoshinori 広島大学, 工学研究科, 准教授 (40127626) ; KATANODA Hiroshi 鹿児島大学, 工学部, 准教授 (40336946)
• Project Period (FY): 2007 – 2009
• Keywords: 溶射・コーティング / コールドスプレー / 固相接合

Research Abstract

It is now widely known that a coating can be obtained simply by projecting powder particles onto a substrate at high velocity. The conditions to obtain a coating and what kinds of bonding are made between the particles and the substrate were studied by numerical simulation and experiments. It was found that the interface regions which underwent heavy shear deformation by the impact tend to form tight bonding. Also, the velocity and temperature of the particles at impact affect the density and internal crystal structures of the coating.

Research Products

• [Journal Article] Bonding mechanisms of thermally softened metallic powder particles and substrates impacted at high velocity (2010)
  • Author(s): 金基懸, 渡邊誠, 黒田聖治
  • Journal Title: SURFACE & COATINGS TECHNOLOGY 204巻,14号 Pages: 2175-2180
  • Peer Reviewed
• [Journal Article] Mathematical Modeling and Experimental Validation of the Warm Spray (Two-Stage HVOF) Process (2009)
  • Author(s): 片野田洋, 桐明, 橘. 川喜多仁, 黒田聖治, 福原稔
  • Journal Title: JOURNAL OF THERMAL SPRAY TECHNOLOGY 18巻,3号 Pages: 410-410
  • Peer Reviewed
• [Journal Article] Thermal softening effect on the deposition efficiency and microstructure of warm sprayed metallic powder (2009)
  • Author(s): 金基懸, 渡邊誠, 黒田聖治
  • Journal Title: SCRIPTA MATERIALIA 60巻,8号 Pages: 710-713
  • Peer Reviewed
• [Presentation] Dynamic recrystallization of metallic powder particles sprayed at high velocity and temperature (2010)
  • Author(s): 金基懸, 渡邊誠, 黒田聖治
  • Organizer: 日本金属学会春期講演大会
  • Place of Presentation: 筑波大学, つくば市
  • Year and Date: 20100328-20100330
• [Presentation] Microstructural Development and Deposition Behavior of Titanium Powder Particles in Warm Spraying Process (2009)
  • Author(s): 金基懸, 渡邊誠, 黒田聖治
  • Organizer: The 4th Asian Thermal Spray Conference (ATSC2009)
  • Place of Presentation: Nan Yang Hotel, 西安
  • Year and Date: 20091022-20091024
• [Presentation] Nitrogen Flow Rate Effect on the Bonding and the Microstructure of Novel Warm Sprayed Titanium Coating (2008)
  • Author(s): 金基懸, 渡邊誠, 黒田聖治
  • Organizer: The IUMRS Int. Conf. in Asia 2008 (IUMRS-ICA 2008)
  • Place of Presentation: 名古屋国際会議場, 名古屋市
  • Year and Date: 2008-12-11
• [Remarks]
  • URL: http://www.nims.go.jp/cccenter/
• [Remarks] 黒田聖治,ウォームスプレー法によるチタンコーティング,チタン, 57(4), 306-311, 2009.
• [Remarks] 黒田聖治,ウォームスプレー法の基礎と高機能被膜創製への応用,機能材料,29(7), 45-51. 2009.
• [Remarks] 渡邊誠、川喜多仁、黒田聖治、固相粒子衝突を利用した新コーティングプロセス-Warm Spray,金属, 78(4), 363-368, 2008.