Method for testing thickness of oxide layer on surface of micro-nano aluminum ball

A technology of surface oxidation and testing methods, applied in measuring devices, material analysis using radiation diffraction, instruments, etc., can solve the problem of reducing the size of aluminum balls, and achieve accurate characterization and strong operability
CN110296669AActive Publication Date: 2019-10-01XI'AN PETROLEUM UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XI'AN PETROLEUM UNIVERSITY
Publication Date
2019-10-01

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Abstract

The invention discloses a method for testing the thickness of an oxide layer on the surface of a micro-nano aluminum ball. According to the method, micro-nano aluminum balls are subjected to micro-nano processing by adopting a double-beam focused ion beam system; through metal protection layer deposition and ion beam cutting, on the premise that the oxide layer on the surface of an aluminum ball is not damaged, the aluminum balls are processed into a final slice sample with the thickness capable of being represented by a high-resolution transmission electron microscope, and scanning and analyzing of the distribution rule of each element in the interface region of the aluminum ball and a protection layer are carried out by adopting an energy spectrum line of a transmission electron microscope, so that the thickness of the oxide layer on the surface is obtained; and the method is simple and effective, high in operability and capable of accurately representing the thickness of the oxide layer on the surface of the micro-nano aluminum ball.
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Description

【Technical field】

[0001] The invention belongs to the technical field of micro-nano processing and characterization of materials, and in particular relates to a method for testing the thickness of an oxide layer on the surface of a micro-nano aluminum sphere. 【Background technique】

[0002] Triaminotrinitrobenzene (TATB)-based aluminum-containing explosives is one of the energetic materials widely used in missile warheads. However, the presence of chlorine residues in the synthesis process of TATB explosives will easily lead to oxidation on the surface of aluminum powder, thereby reducing the activity of aluminum powder and the key energy parameters of TATB. How to characterize the degree of oxidation on the surface of aluminum powder plays an important role in evaluating the activity of aluminum powder and the service life of TATB. At present, the activity of aluminum powder is mainly evaluated by indirect experimental means. For example, the elemental aluminum content me...

Claims

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