Measurement and analysis of adhesion strength for thermally sprayed coatings

C. K. Lin, C. C. Berndt

研究成果: 雜誌貢獻回顧型文獻同行評審

104 引文 斯高帕斯(Scopus)


Thermally sprayed coatings have a distinctive microstructure which can be described as "a three dimensional layered structure of discs which are interlaced to form a material of composite nature.≓ The coatings are normally greater than 25 (Ώm in thickness and can thus be described as bulk coatings. The minimum microstructural detail would be a single splat (ofter described as a lamella) which is about S (Ώm (approximately 0.0002 in.) in thickness and up to 80 Ώm (approximately 0.003 in.) in diameter. This paper focuses on methods used to define and measure the adhesion of coatings or deposits formed by thermal spray technology. The properties distinguished include strength and toughness. Measurements such as the tensile adhesion test (according to ASTM C633), the double cantilever beam test, and the scratch test are detailed to illustrate their relevance to present industrial practice. Acoustic emission studies have also been used to assess the "crack density function," a product of the number of cracks and crack size. Indentation techniques have been used to determine the fracture toughness of coatings and to demonstrate that the material properties of coatings are anisotropic. These techniques, among others, may be used to gain a fundamental understanding of coating performance or for quality control. A further focus of this paper concerns the highly variable nature of the material properties of coatings. Such variation leads to poor reproducibility during service and can cause unpredictable performance. Therefore, a section is presented on the statistical analysis of thermal spray coatings, with particular reference to the Weibull distribution.
頁(從 - 到)75-104
期刊Journal of Thermal Spray Technology
出版狀態已發佈 - 3月 1994

ASJC Scopus subject areas

  • 凝聚態物理學
  • 材料化學
  • 表面、塗料和薄膜


深入研究「Measurement and analysis of adhesion strength for thermally sprayed coatings」主題。共同形成了獨特的指紋。