Surface corrosion treatment method of boron carbide product, metallographic specimen and preparation method thereof

Abstract

The invention relates to a surface corrosion treatment method of a boron carbide product, a boron carbide metallographic specimen and a preparation method of the boron carbide metallographic specimen.The surface corrosion treatment method comprises the steps of enabling the temperature of a to-be-treated boron carbide product to be at a preset temperature, performing corrosion treatment on the to-be-treated boron carbide product for the first preset duration at the first temperature by using a first corrosive agent, wherein the preset temperature is higher than the room temperature and less than the first temperature; cooling the boron carbide product after corrosion treatment, and performing corrosion treatment on the cooled boron carbide product for the second preset duration at the second temperature by using a second corrosive agent, wherein the second preset duration is not less than the first preset duration, the second corrosive agent is different from the first corrosive agent, and the second temperature is lower than the preset temperature; after obtaining the boron carbide product after corrosion treatment, performing the corrosion treatment on the boron carbide productafter corrosion treatment for the third preset duration at the third temperature by using a third corrosive agent, wherein the third preset duration is not more than the first preset duration, the third corrosive agent is different from the second corrosive agent, and the third temperature is not lower than the first temperature; and obtaining the boron carbide product after corrosion treatment, and cooling the same.

Description

technical field [0001] The invention relates to the field of process treatment of boron carbide products, in particular to a method for surface corrosion treatment of boron carbide products, a method for preparing a boron carbide metallographic sample and a boron carbide metallographic sample. Background technique [0002] Due to the material characteristics of boron carbide itself, such as hardness, etc., many types of boron carbide products have been provided. For example, taking boron carbide ceramics as an example, the application of surface microstructure morphology analysis is a routine detection method to characterize it according to relevant standards and regulations. The pores, pores, and Grain size, grain shape, and grain boundaries. There are many production and preparation methods for boron carbide ceramics, but the best application prospect at present is sintering boron carbide ceramics by hot pressing method, that is, it is made of submicron boron carbide powd...

AI Technical Summary

Problems solved by technology

However, these existing methods still have some disadvantages and shortcomings

For example, the common chemical corrosion method is to use a single acid and alkali for corrosion, and the corrosion effect is not obvious, and the morphology of grains or grain boundaries is destroyed, resulting in incomplete and unclear corrosion interfaces and excessive corrosion.

For another example, the ion etching method uses high-energy ions to remove the ceramic surface, but in the etching process, because high-energy ions are easy to introduce new defects, and the grain boundary of the ceramic sample after etching is not clear, so in order to observe Clear grains and grain boundaries, preparation of etching solution, etching temperature and etching time are all critical and difficult to control

Images