Wear of advanced ceramics for tool materials

Effect of Al2O3/YSZ microstructures on wear and mechanical properties of cutting inserts

“…Unfortunately, alumina based cutting inserts lack toughness, therefore resulting in premature tool failure caused by chipping or breakage [2]. Significant improvements have been made in the past to increase the toughness of ceramics but brittleness continues to keep ceramics from more widespread use [3][4][5]. Due to the brittle nature of alumina itself, a second composition is introduced to increase the toughness of the cutting tools.…”

Detection of alpha particle contamination on ultra low activity-grade integrated circuits

“…We have recently defined a post-fabrication method based on a liquid detector material and recompression stages that yield a smooth sample-detector interface with a distribution of droplets in the vicinity of the sample. Operation at a lower superheat [11] via modification of the thermodynamic parameters or the superheated liquid is under consideration aiming at further noise reduction.…”

“…Most SDD applications are concerned with the detection of neutrons or heavy recoiling atoms [11], whereas in this work we focus on the detection of 's. Our initial investigations of the intrinsic SDD response to 's were performed using spectroscopy-grade liquid sources that are homogeneously dispersed in the gel during the stirring phase of the fabrication process.…”

Surface Modification of Al2O3/TiC Cutting Ceramics

“…The only disadvantage of this tool is its relatively low fracture toughness, which may cause sudden failure. Many attempts have been made to improve the fracture toughness of Al 2 O 3 ceramics, for example, inclusion with ZrO 2 , TiC, or SiC whiskers 2–4 . Among these, the Al 2 O 3 –TiC mixed ceramic is very popular because of its high hardness (20–22 GPa), good flexural strength (500–600 MPa), and moderate fracture toughness (4–4.5 MPa·m 1/2 ) 5 .…”