A study on the wear resistance of ZrO2/Al2O3 ceramic scissors for spinning and weaving

A new kind of zirconia matrix ceramic material (ZrO₂/Al₂O₃) has been developed with 3Y-PSZ (3 mol% Y₂O₃ partially stabilized ZrO₂) and the additive of alumina. The wear resistance of ZYA20 (3Y-PSZ+20 wt.% Al₂O₃) has been experimentally investigated compared with ZYA30 (3Y-PSZ+30 wt.% Al₂O₃) by the wear ring-block test. It is shown that the friction coefficients of ZYA20 and ZYA30 decrease with the increment of the applied load and the wear ratios increase with the increment of the applied load. It is also found that their wear mechanisms are plastic deformation, adhesive and abrasive wear, as well as stripping. The wear resistance of ZYA20 and ZYA30 are very good at low load and ZYA20 is stronger than ZYA30.