Titanium Implant Surface Oxidative Etching

The patent changes the chemical composition parameters of the etching solution by replacing strong acids with a weak acid (acetic acid) combined with hydrogen peroxide and carbonate compounds. This parameter change maintains the etching capability needed to create micro-roughness and increase surface area while eliminating the harmful effects of strong acids, thus resolving the contradiction between surface area improvement and reduction of harm to human health and environment.

The patent converts potentially harmful strong acid etching into a beneficial process by using a mild acid system (acetic acid + hydrogen peroxide + carbonate) that produces controlled oxidation and etching effects. The hydrogen peroxide provides oxidative etching capability that replaces the harsh chemical action of strong acids, transforming a harmful process into a safe and effective surface treatment method that achieves the desired surface area increase without environmental pollution.

The patent replaces strong acid with a mild acid system (acetic acid + hydrogen peroxide + carbonate) that achieves effective surface micro-roughness without leaving harmful residues. The hydrogen peroxide decomposes into water and oxygen, and the carbonate compounds buffer the acid, creating a self-neutralizing system that eliminates the need for extensive washing processes, thereby reducing energy consumption while maintaining manufacturing precision.

The etching solution contains carbonate compounds that act as buffers to neutralize the acid during and after the etching process. This self-neutralizing mechanism means the solution automatically neutralizes itself after use, eliminating the need for separate neutralization and extensive washing steps, thus reducing energy consumption and simplifying the manufacturing process while achieving the desired surface micro-roughness.

The patent replaces the mechanical sandblasting process with a chemical-oxidative etching process using acetic acid, hydrogen peroxide, and carbonate compounds. This substitution eliminates the need for external ceramic particles, as the solution itself creates the macro-roughness through controlled chemical etching and oxidation, thereby achieving the desired surface shape without leaving particle impurities.

The patent uses hydrogen peroxide as an intermediary oxidizing agent that facilitates the creation of macro-roughness without requiring external ceramic particles. The hydrogen peroxide reacts with the titanium alloy surface to create controlled oxidation and etching effects, serving as a mediator that achieves the desired surface morphology without leaving harmful residues, thus resolving the contradiction between forming macro-roughness and avoiding particle impurities.