Experimental Evaluation of the Surface Alteration of Gasket Samples under Operative Conditions

Tribology in Industry

C. Fragassa¹  M.C. Bignozzi¹  A. Saccani¹ 

[1] Interdepartmental Industrial Centre on Advanced Applications in Mechanical Engineering and Materials Technology (CIRI MAM) , Alma Mater Studiorum University of Bologna, via Terracini 24, Bologna, Italy;

关键词: Polymeric materials;    Degradation;    Optical microscopy;    Scanning electron microscopy;    Thermograms;    Infrared spectra;   

DOI  :  

来源: DOAJ

【 摘 要 】

This paper investigates the surface alteration of gasket samples commercialized by two alternative producers. These gaskets, in polymeric materials, are installed in process plants used for cleaning tires molds by a pioneering ultrasonic process. They are exposed to a combination of ultrasonic waves, temperature, humidity and acid attack causing several erosion phenomena. Their surface degradation under ordinary operative conditions was investigated using mechanical and tribological tests. The experimental characterization was performed by optical microscopy, scanning electron microscopy, thermograms, differential scanning calorimetry curves and infrared spectra aiming at defining the specific mechanics of wearing. As a conclusion, it was possible to state that even if samples exhibit similar chemical structures, their thermal and mechanical properties as well as their geometric dimensions are different. Such differences in the materials might cause various unexpected wear behaviors when gaskets are employed in the same working conditions.

【 授权许可】

Unknown