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A method for predicting critical load evaluating adhesion of coatings in scratch testing
Xi-fang Chen1, Mi Yan, De-ren Yang
1Dept. of Material Science and Engineering, Zhejiang University, Hangzhou 310027, China. defeat@mail.hz.zj.cn
Journal of Zhejiang University. Science
|October 21, 2003
Summary
This study explores thin film adhesion using scratch testing and contact mechanics. A new model predicts critical load, improving adhesion evaluation for coatings.
Area of Science:
- Materials Science
- Surface Physics
- Mechanical Engineering
Background:
- Adhesion is critical for thin film performance.
- Scratch testing is a common method for evaluating adhesion.
- Understanding peeling mechanisms is essential for accurate assessment.
Purpose of the Study:
- To discuss the peeling mechanism of thin films during scratch testing.
- To propose a mathematical model for predicting critical load.
- To identify factors influencing accurate adhesion evaluation.
Main Methods:
- Applying contact theory and surface physics principles.
- Developing a predictive mathematical model for critical load.
- Analyzing experimental data from scratch testing.
Main Results:
- A model was proposed to predict critical load in scratch testing.
- The study elucidated the peeling mechanism of thin films.
- Key factors for accurate adhesion evaluation were identified.
Conclusions:
- The proposed model aids in calculating critical load.
- Understanding theoretical principles enhances experimental adhesion evaluation.
- This work provides a framework for reliable coating adhesion assessment.