Role of reinforcing ceramic particles in the wear behaviour of polymer-based model composites

摘要: Abstract The role of the ceramic particles in wear behaviour particulate composites was investigated by minimizing influence often intricate metallic matrix (high speed steel, Al alloys, Mg …). For this, replaced a soft and homogeneous polymer showing very low resistance. Polymer-based model were thus obtained. Their dry sliding studied means pin-on-disc apparatus which measured friction coefficients. A number experiments performed using different particle types (Al2O3, TiC, SiC, …) varying size (5–100 μm) volume fraction (5, 10, 20, 30, 40%). An alumina counterbody used since conventional steel not suitable for studying ceramics due to high abrasion. Interrupted testing also carried out study mechanisms scanning electron microscopy (SEM) observation tracks cross-sections. crack formation detachment mechanism identified unreinforced material. addition decreased coefficient up 50 times. Large (of about 100 found protect better than small 20 μm). Particle higher 20% did increase significantly resistance composites. Results keeping with those obtained metal containing similar additions.