In order to select the mechanical seal materials suitable for working in aviation kerosene

the frictional characteristics of these materials were studied. Through the friction-wear tester

the friction coefficients and the temperature rise of materials were obtained under different working conditions and surface roughness. The microscopic wear morphology was observed for three groups of typical matching materials under the atomic force microscope(AFM). The differences between abrasive wear and adhesive wear were analyzed

and the key parameters of wears were calculated. It found that

when the conditions were set

polytetrafluoroethylene (PTFE) was the best soft material

and the hard materials got the best friction performance when their surface roughness equaled 0.05. Besides

different materials had few differences in their performance. It also found that PTFE caused the least amount of element migration on hard surface which

in turn

caused the smallest single abrasive grain grooves. The adhesive wear caused the migration of surface height distribution function. In addition

the adhesive volume and average adhesive thickness were inferred by discretization solving formula.