Abstract: A method of fabricating a hydrophilic-hydrophobic transformable composite film is provided. The method includes forming a silicon-containing layer on an iron-containing substrate; coating a titanium-containing sol-gel film on the said silicon-containing layer; and heating the iron-containing substrate with the silicon-containing layer and the titanium-containing sol-gel film thereon.

Abstract: A method of fabricating a hydrophilic-hydrophobic transformable composite film is provided. The method includes forming a silicon-containing layer on an iron-containing substrate; coating a titanium-containing sol-gel film on the said silicon-containing layer; and heating the iron-containing substrate with the silicon-containing layer and the titanium-containing sol-gel film thereon.

Abstract: A hydrophilic-hydrophobic transformable composite film is disclosed, which has an iron-containing substrate; a silicon-containing layer formed on the iron-containing substrate; and a titanium oxide layer formed on the silicon-containing layer. The hydrophilic-hydrophobic transformable composite film uses UV-light to switch its hydrophilic and hydrophobic property. Also, a method of fabricating the above composite film is disclosed. According to the present invention, an anatase oxide layer can be obtained from the sol-gel techniques, in which the particle size of the titanium dioxide is controlled and a modified surface coating with evident photo-catalyticity is achieved.

Abstract: A hydrophilic-hydrophobic transformable composite film is disclosed, which has an iron-containing substrate; a silicon-containing layer formed on the iron-containing substrate; and a titanium oxide layer formed on the silicon-containing layer. The hydrophilic-hydrophobic transformable composite film uses UV-light to switch its hydrophilic and hydrophobic property. Also, a method of fabricating the above composite film is disclosed. According to the present invention, an anatase oxide layer can be obtained from the sol-gel techniques, in which the particle size of the titanium dioxide is controlled and a modified surface coating with evident photo-catalyticity is achieved.

Abstract: The present invention relates to a method for modifying the surface of titanium or a titanium alloy by a fluidized bed carburization process. The surface hardness of the titanium or the titanium alloy could be improved by the fluidized bed carburization process. The above-mentioned method includes the following steps: providing a fluidized bed furnace, in which a carburizing agent containing charcoal and carbonate powders of which the weight ratio is 10˜8:0.5˜2 is used; placing titanium or a titanium alloy in the fluidized bed furnace at the temperature ranging from 900° C. to 1200° C. for carburizing the titanium metal or the titanium alloy for a period more than 3 minutes; and then taking the titanium metal or the titanium alloy out for quenching.

Abstract: Disclosed is a process of surface hardening for titanium alloys comprising .alpha. phase by carburization in a molten salt which consists of carbonate as the carbon-yielding agent with electrolysis within 790.degree. C. to 930.degree. C. The hardness within the effective carburizing layer is influenced by bath temperature, applied current density and carburizing period. The major hardening effect is due to the formation of solid solution of carbon in .alpha.-Ti.

Abstract: Disclosed is a process of surface hardening of Ti-6A1-4V alloy that can be performed by electrolytic charging in an acid solution, subsequent solution treatment, followed by dehydrogenation to obtain an equiaxed alpha grain in transformed beta matrix. Surface hardnesses of the processed specimens are better than that of the mill-annealed specimen. The depth of hardened layer depends on the charging time.