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Coating interfacial bond strength detecting method and apparatus based on XRD

A technology of interface binding strength and detection method, applied in the field of optical detection

Inactive Publication Date: 2007-06-06
JIANGSU UNIV
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After literature search, there are no public reports of relevant academic papers and patent documents at home and abroad

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  • Coating interfacial bond strength detecting method and apparatus based on XRD

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Embodiment Construction

[0011] The details and working conditions of the specific device proposed by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0012] Carry out XRD detection coating bonding interface intensity device with the present invention and comprise: (1) form incident optical path system by YAG laser, mainly by laser power supply 20, YAG laser 7, photodiode 8, power meter 9, laser beam connected successively through optical path 10. Circuit breaker 11, attenuator 12, lens 13, etc.; (2) worktable and sample fixture system, including numerical control workbench 15 and coating sample 14 placed on it, controller 19, and controller 19 respectively It is connected with the numerical control workbench 15 and the laser power supply 20; (3) the laser beam parameter detection signal detection and diagnosis system, which is mainly composed of the slit 2, the filter 3, the photodetector 4, the signal amplifier 6, and the He-Ne Laser 18 and the...

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Abstract

The invention relates to the method and the device to detect the bond strength of the coat interface based on the XRD which belongs to the optical detection technology. The device includes the input path system composed of the YAG laser, the working table, the sample clipping system, the laser bean detecting signal analysis system and the data processing system composed by the computer and the X radial. The basic principle is that the hot effect of the laser acts on the coat surface to generate a hot coupling gradient temperature field, so the residue stress of the bond interface is changed which can express the interface bond strength. The temperature is achieved by controlling the laser power, the facular diameter and the acting time.

Description

Technical field: [0001] The invention relates to a method and a device for detecting the bonding strength of a coating interface based on XRD technology, in particular to a method and a device for detecting the bonding strength of a coating interface by using XRD, and belongs to the technical field of optical detection. Background technique: [0002] Residual stress is a common phenomenon in the coating preparation process. It stores a large amount of elastic energy in the coating and acts on the interface between the coating and the substrate. When the elastic energy is large, it will cause the coating to crack or even peel off. Coating / substrate system failure. Residual stress has become a major problem in the preparation and application of coatings. Therefore, it is necessary to carry out quantitative research on the relationship between residual stress and interface bonding performance of coating materials. [0003] When the coating debonds from the substrate, the inter...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/20G01N19/04
Inventor 张永康孔德军鲁金忠冯爱新任旭东
Owner JIANGSU UNIV
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