||I learned material science and strength when I was a Ph.D student, and I worked for several projects corresponding to advanced material processing technologies during my post-doc periods. Through those experience I have several background. Especially I am specialized in surface fabrication by means of abrasive jet technology. This technology is purely “mechanical”, however, I have been researching this subject with multidisciplinary viewpoints, including chemistry, biology and so on.
My research interests covers shot peening, surface modification, tribology, biomedical materials, wet/dry-process coatings, and precision machining. Details of my ongoing projects are given below.
|Research Field(Keyword & Summary)
- Material transfer during shot peening process and its application for novel surface modification
When metallic substrates are shot-peened using a metallic shot particle, the peened surfaces are often enriched with the elements from the particle. This was because elements of the shot particle transferred onto the collision crater. I have been interested in this “material transfer” phenomena, and researching to apply them as a novel surface modification technology. Several projects are ongoing to study fundamental mechanism and practical benefits of peening-induced material transfer. Expected fields to apply this research are tribological components, novel jointing technologies, and pretreatment of various coating techniques, etc.
- Periodical texturing by means of abrasive jet machining
Textured surface has been emerging technology since it provides various benefits such as friction reduction, controlled wettability, specific optical properties. My original technique, angled fine particle peening (angled-FPP), can fabricate periodical surface texture by repeated collision of shot particles from shallow angle. Angled-FPP can be conducted by using simple apparatus, and create various texture without masking process. Research aims corresponding to angled-FPP are: to reduce friction coefficient by using appropriate surface texture, to explore surface texture which can prevent adhesion of nanoparticles, and to create plastically generated texture on brittle materials.
- Surface texturing aiming to avoid powder adhesion
Ultra-fine powders easily adhere to the surface of industrial equipments and civil structures and then cause various problems. Anti-adhesion surface modifications are potential technology to overcome the powder-adhesion related problems. I study a novel peening process which can create a specific surface texture which can suppress powder adhesion onto the texture. Recently I try on applying the texturing technique for fabricating nano-scaled texture onto glass surfaces. This process is expected to apply the cover glass of sollar cells; the superfine roughness avoilds attachment of PM2.5s onto the surface while transparency of the glass was maintained.
- Eco-friendly electrodeposition
Electrodeposition of chromium plating has been widely employed for various machine components. However , the impact of hexivarent chromium, which is contained in typical chromium plating baths, to the enviroment and health of workers in plating factories becomes serious concern. I am working on proposing a trivalent chromium plating as a potential alternative to the conventional hexavarent chromium plating. Coatings deposited from trivalent chromium bath are investigated from the viewpoints such as wear resistance, interfacial adhesion, and corrosion resistance.
- (1) H.Suzumoto, Y.Kameyama, H.Sato and R.Shimpo; Effects of scale differences of microscopic texture of fine particle peened surface on adhesion behaviour of powders, International Journal of Abrasive Technology, 11, 3 (2023) p184-195. https://doi.org/10.1504/IJAT.2023.130842
- (2) Y.Ichikawa, R.Tokoro, and Y.Kameyama; Microscale Bonding Strength of Cu-Fe-Al Transferred Lamellar Microstructure Formed by Copper-Coated Seel Fine Particle Peening, J. Japan Inst. Met. Mater., 84,1 (2020) p28-35. in Japanese
- (3) Y.Kameyama, T.Ohta, K.Sasaki, H.Sato and R.Shimpo; Microstructural changes in electroplated chromium coating–substrate interfaces induced by shot peening, Proceedings of Advanced Surface Enhancement (INCASE 2019), Part of the Lecture Notes in Mechanical Engineering book series (LNME), (2019) https://doi.org/10.1007/978-981-15-0054-1_6
- (4) Y.Kameyama, H.Sato, and R.Shimpo；Ridge-Texturing forWettability Modification by Using Angled Fine Particle Peening,International Journal of Automation Technology, 13, 6 (2019) p765-773.
- (5) Y. Kameyama, H. Ohmori, H. Kasuga and T. Kato; Fabrication of micro-textured and plateau-processed functional surface by angled fine particle peening followed by precision grinding, CIRP Annals - Manufacturing Technology, 64, 1 (2015) p549-552. https://doi.org/10.1016/j.cirp.2015.04.017
- (6) Y. Kameyama, K. Nishimura, H. Sato and R. Shimpo; Effect of fine particle peening using carbon-black/steel hybridized particles on tribological properties of stainless steel, Tribology International, 78 (2014) p115-124. https://doi.org/10.1016/j.triboint.2014.05.006
- (7) S. Kikuchi, Y. Kameyama, M. Mizutani and J. Komotori; Effects of Fine Particle Peening on Oxidation Behavior of Nickel-Titanium Shape Memory Alloy, Materials Transactions, 55, 1 (2014) 176-181.
- (8) Y. Kameyama and J. Komotori; Effect of Micro Ploughing during Fine Particle Peening Process on the Microstructure of Metallic Materials, Journal of Materials Processing Technology, 209, 20 (2009) p6146-6155. https://doi.org/10.1016/j.jmatprotec.2009.08.010
- (9) H. Nanbu, S. Kikuchi, Y. Kameyama and J.Komotori; Wear resistance of AISI316L steel Modified by pre-FPP treated DLC coating, Journal of Solid Mechanics and Materials Engineering, 3, 2 (2009) p328-335.
- (10) Y. Kameyama and J. Komotori; Effect of Fine Particle Peening (FPP) Conditions on Microstructural Characteristics of Ti-6Al-4V Alloy, Journal of Solid Mechanics and Materials Engineering, 2, 10 (2008) p1338-1347.