Method for preparing TiO2 coating layer on surface of iron based amorphous nanometer crystal powder body by sol and gel method

Abstract

The invention relates to a method for preparing a TiO2 coating layer on the surface of an iron based amorphous nanometer crystal powder body by a sol and gel method, which comprises the following preparation process steps of: taking the iron based amorphous nanometer crystal powder body as raw materials; step 1: taking and pouring 42.5ml of absolute ethyl alcohol into a beaker and taking 17ml of tetrabutyl titanate; step 2: continuously stirring the materials to obtain clear colorless solution; step 3: finally obtaining light yellow sol; step 4: adding several drips of hydrochloric acid or nitric acid into the sol obtained in the third step so that the pH value of the sol is maintained at a value smaller than 3; step 5: heating the sol obtained in the fourth step to about 70 to 90 DEG C in water bath or oil bath; and step 6: filtering out the iron based amorphous nanometer crystal powder body in the fifth step through gauze. The method has the advantages that: (1) the reaction process is easy to control, the side reactions are few, and the process operation is simple; (2) titanium dioxide has the characteristics of good weather resistance, good chemical corrosion resistance, strong uvioresistant capability, excellent transparency, uniform granularity distribution and the like, and the integral performance of the iron based amorphous nanometer crystal powder body can be improved.

Description

technical field [0001] The invention relates to a method for preparing TiO on the surface of iron-based amorphous nanocrystalline powder 2 The method for coating, especially relates to a kind of sol-gel method to prepare iron-based amorphous nanocrystalline powder surface TiO 2 Coating method. Background technique [0002] In modern local wars under high-tech conditions, stealth weapons play a very important role. In order to conceal oneself, vigorously developing stealth technology, materials and equipment has become the research focus of various countries. Stealth technology mainly focuses on structural design and absorbing materials. Considering the cost problem, current research mainly focuses on absorbing materials. The electromagnetic parameters of materials are important parameters in the study of absorbing materials. Nanomaterials are much smaller than the wavelength of electromagnetic waves emitted by radar, so their transmittance to electromagnetic waves is mu...

AI Technical Summary

Problems solved by technology

However, the high-frequency characteristics of this material are relatively low, and its main component is iron, which is prone to rust in a humid environment and affects its appearance and performance