Thin film coating quality detection method and ultrasonic fastener quality detection method
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A quality inspection method and fastener technology, which is applied in the field of coating junctions, can solve the problems of insufficient system, inability to evaluate the quality of thin film coatings, sporadic dispersion, etc.
Pending Publication Date: 2020-08-14
CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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[0003] For the quality evaluation of thin film coatings, all walks of life have their own standards or unwritten regulations, which are relatively scattered and not systematic enough. Most of them are for testing a single quality parameter, and cannot comprehensively evaluate thin film coatings. conduct a quality assessment
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Embodiment 1
[0044] This embodiment provides a method for detecting the quality of a thin-film coating. The thin-film coating is formed on a substrate with a flat surface. The material of the substrate can be stainless steel, titanium alloy, aluminum alloy, carbon steel, glass, silicon wafer, sapphire sheet, plastic Plates, etc., thin-film coatings can be metals and their oxides, alloy compounds, polymers, etc., and the coating can be single-layer or multi-layer.
[0045] Detection methods include:
[0046] Thickness detection, used to detect the thickness of thin film coating;
[0047] Adhesion detection, used to detect the adhesion between the thin film coating and the substrate;
[0048] Wear resistance test, used to test the wear resistance of thin film coating;
[0049] Climatic performance testing to detect the impact of climatic parameters on the performance of thin-film coatings; and / or,
[0050] Corrosion resistance testing, used to test the corrosion resistance of thin film co...
Embodiment 2
[0118] This embodiment provides a quality detection method for ultrasonic fasteners. Ultrasonic fasteners use the in-situ growth technology of thin-film transducers. An ultrasonic thin-film transducer is processed and grown on one end face (head or tail) of the fastener. The transducer is connected to the external system when it is working. Perform detection and measurement, and compare and analyze the signal difference of fasteners in different states to accurately calculate the axial pretightening force (axial force, stress, load) of fasteners in service state.
[0119] The main application scenarios of ultrasonic fasteners are scenarios that require precise installation control of fasteners or monitoring and detection of real-time usage status of fasteners after installation, mainly focusing on key connection parts of some important equipment, such as aircraft engines Relevant parts, connecting bolts between wing and empennage and fuselage, fixed base of wind turbine fan, e...
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Abstract
The invention provides a thin film coating quality detection method and an ultrasonic fastener quality detection method. According to the thin film coating quality detection method, a thin film coating is formed on a base material with a flat surface; the detection method comprises the following steps: performing thickness detection for detecting the thickness of a thin film coating; performing adhesive force detection for detecting the adhesive force between the thin film coating and the base material; performing wear resistance detection for detecting the wear resistance of the thin film coating; performing climate performance detection for detecting the influence of climate parameters on the performance of the thin film coating; and / or performing corrosion resistance detectio for detecting the corrosion resistance of the thin film coating. By detecting various performance parameters of the thin film coating, the performance of the thin film coating can be mastered more comprehensively and accurately, and the reliability of the thin film coating is improved, so that failure or damage in use is reduced or avoided.
Description
technical field [0001] The invention relates to the technical field of coating junctions, in particular to a method for detecting the quality of thin film coatings and ultrasonic fasteners. Background technique [0002] Thin film coatings are widely used in various industries. Common thin film coatings include: coating coating, thermal spray coating, chemical, electrochemical coating and physical vapor deposition coating, etc. Common parts that require thin film coatings include: surface coatings of smart bolts, aircraft fuselage wing engine blades, automotive steel plates, protective coatings for heat sinks, hard coatings on tool and mold surfaces, and transistor circuits in integrated circuits. The protective layer of the protective layer, the surface electrode film of the piezoelectric ceramic chip, the functional film coating on the surface of architectural glass and automobile glass, the coating on the surface of the mobile phone shell, etc. Most of the parts with thin...
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