X-ray-based metal surface infiltrated layer thickness non-destructive detection device and method

Abstract

The present invention provides an X-ray-based metal surface infiltrated layer thickness non-destructive detection device and method. The device comprises an X-ray generator, an X-ray detector, an amplifier, a data processing storage module and a display. The method comprises: producing sample pieces with different infiltrated layer thicknesses, using the device for calculation to obtain the infiltrated layer element content of the sample pieces, accurately measuring the infiltrated layer thicknesses of the sample pieces by using a scanning electron microscopy method, and establishing a data sheet corresponding to the infiltrated layer element content and the infiltrated layer thicknesses; and using the device to obtain the infiltrated layer element content of a to-be-detected test piece, and performing interpolation calculation in the pre-calibrated data sheet corresponding to the infiltrated layer element content and the infiltrated layer thicknesses to obtain the infiltrated layer thickness of the to-be-detected test piece. Compared with the existing infiltration layer inspection method, by using the method provided by the present invention, the infiltrated layer thickness of thediffusion aluminized layer can be quickly detected without destroying the test piece, full inspection of the product can be realized, and the working efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the field of surface engineering technology and precision detection technology, and specifically relates to an X-ray-based non-destructive detection device and method for the thickness of metal surface penetration layer, which can detect other metal elements on the surface without destroying the metal parts to be detected. Seepage layer thickness. Background technique [0002] Nickel-based superalloys are susceptible to high-temperature gas corrosion during use, and the Cr element contained in the material itself is difficult to resist the influence of the external environment. Therefore, aluminizing treatment is usually used to protect it in engineering. Since the solid powder embedding method and gas phase diffusion method are widely used for aluminizing, the depth of aluminizing is affected by temperature, time and aluminizing agent. As an important index of superalloy surface aluminizing treatment, aluminizing thickness de...

AI Technical Summary

Problems solved by technology

However, the nickel-based superalloy aluminizing process uses the principle of thermal diffusion to infiltrate the activated aluminum atoms into the substrate. The diffusion rate is different at different depths, and there is no obvious physical interface between the aluminized layer and the body. The area is mixed with each other to form a new NiAl phase, so that there is no obvious difference in the conductivity and permeability between the infiltrated layer and the matrix, and it cannot be effectively detected by existing non-destructive testing methods

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