| Abstract Scope |
After long studies on bulk ceramic materials based on Zirconia, Apatite,etc. To overcome their intrinsic brittleness, we have considered Coatings of ceramics film(s) on other materials like metallic alloys etc., In 2008 we have proposed a novel concept and technology of “Growing Integration Layer” [GIL] method, where GIL(s) can be prepared via integration of ceramic film formation from a component of the alloys by chemical and /or electrochemical reactions in a solution at low temperature of RT-200℃. They have particular features: 1) Widely diffused interface(s), 2) Continuously graded layers grown from the bulk (substrate), 3) Low temperature process, etc. They are quite different from Integration so-called Layer-by-Layer [LBL] strategy, where every layer is deposited from the Top-by-top.
On a Ti-base Bulk Metallic Glass, we could succeed to prepare bioactive titanate nano-mesh layer by hydrothermal-electrochemical techniques at 90-120℃.The GIL method can be applicable for wide variety of applications like thermal barrier, mechanical parts, environmental and/or chemical coating, conducting and or insulating films, biological and/or medical coating, etc., Particularly, GIL Bio-active coating on alloys would be one of the best examples. We have prepared HAP containing layers on Ti alloys. Please note that almost materials in bio-systems have been prepared via similar ways of GIL in a solution under ambient temperature and pressure conditions. Furthermore, we can make carbon films with various nanostructures on metal carbides by “reverse integration3)
M. Yoshimura et al., Mater. Sci. Eng. B,148,2-6(2008), 2) Acta Biomaterialia,5,1367-1373(2009), Mater. Sci. Eng. B,161,31-35(2009), 3) C-H. Huang, M. Yoshimura et al..,Scientific Reports,accepted(2020) |