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Basic process of coating/plating failure analysis and detection

Date:2022-12-06 16:08:42Views:470

With the development trend of production and technology, coating/coating raw materials have gradually appeared in our sight and rapidly developed throughout people's daily life. In general, the general development trend of the technology of raw materials for coating/coating in the future is to achieve excellent performance, high functionality, intelligent systems and environmental protection. According to a series of analysis and certification methods of failure analysis, the direct cause and principle of its invalidity can be searched, which has a key practical significance in improving product quality, processing technology improvement, compulsory litigation and other fields.

Coating/plating refers to coating a layer of plastic on the metal surface painted/plated on some articles for beauty or storage, or a thin layer of metal or a thin layer of precious metal for imitation, and coating a thin layer of such precious metal on the surface of ordinary metal.

The preparation of composite coating is a process in which one or more insoluble solid particles are added into the plating solution to make the solid particles codeposition with metal ions. It is actually a metal matrix composite. Failure mode delamination, cracking, corrosion, blistering, coating/coating peeling, discoloration failure, etc.

涂层/镀层失效分析检测基本流程

Critical Failure Mode

Hierarchical, cracking, etching, blistering, coating/coating falling off, discoloration failure, etc.

Common failure analysis methods

Analysis level of chemical composition of raw materials:

Fourier transform microscope infrared quantitative analysis (FTIR)

Microscopic confocal Raman spectrometer (Raman)

Transmission electron microscope and energy spectrum analysis (SEM/EDS)

X-ray fluorescence quantitative analysis (XRF)

GC-MS

Cracking gas chromatograph mass spectrometry (PGC-MS)

Magnetic resonance profiling (NMR)

Auger electron spectroscopy (AES)

X-ray photoelectron spectroscopy (XPS)

X-ray diffractometer (XRD)

TOF-SIMS

Thermal analysis of raw materials:

Differential scanning calorimetry (DSC)

Thermogravimetric analysis (TGA)

Thermal mechanical equipment analysis (TMA)

Dynamic Thermomechanical Equipment Analysis (DMA)

Analysis level of raw material fracture surface:

Yoga posture optical microscope (OM)

Transmission electron microscopy (SEM)

Material science function test:

Tensile strength, bending strength, etc

Failure analysis process

(1) Failure background investigation: product failure phenomenon, failure environment, failure stage (design debugging, pilot test, early failure, mid-term failure, etc.), failure ratio, failure history data

(2) Non destructive analysis: X-ray fluoroscopy, ultrasonic scanning, electrical performance test, morphology inspection, local composition analysis, etc.

(3) Destructive analysis: opening inspection, profile analysis, probe test, focused ion beam analysis, thermal performance test, body composition test, mechanical performance test, etc.

(4) Analysis of service conditions: structural analysis, mechanical analysis, thermal analysis, environmental conditions, constraints and other comprehensive analysis.

(5) Simulation verification experiment: the simulation experiment is designed according to the failure mechanism obtained from the analysis to verify the failure mechanism. Note: The site and samples in case of failure must be carefully protected to avoid secondary injury caused by force, heat, electricity and other factors.

The above is the content of "Basic Process of Coating/Plating Failure Analysis and Detection" brought about by this core creation test. I hope it can help you. We will bring more wonderful content later. The company's testing services cover: testing and verification of electronic components, IC authenticity identification, product design material selection, failure analysis, functional testing, factory incoming material inspection, tape weaving and other test items. Welcome to call Chuangxin Testing, we will serve you wholeheartedly.

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