Preparation of In Situ Growth Multiscale β-Sialon Grain-Reinforced AlO-Based Composite Ceramic Tool Materials.

A kind of multiscale β-sialon grain-reinforced AlO matrix composite ceramic tool material, named ASN, was prepared and studied. For the ASN, β-sialon (molecular formula: SiAlON) was synthesized in situ by a hot-pressing and solid-solution reaction process. A total of six samples were prepared at varying sintering temperatures and holding times under vacuum conditions.

[Imageology and significances of rotational axes of distal femur on Chinese adults with total knee arthroplasty].

Objective: To explore clinical significance of rotational axis of distal femur on Chinese adults in total knee arthroplasty (TKA).

Methods: There were 86 Chinese adults (106 normal knees) including 47 males (53 knees) and 39 females (53 knees), 54 knees were on left and 52 on right. The CT scan was employed in the distal femur.