English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In order to produce ceramic composites having both high Vickers hardness Hv ≥20 GPa and high fracture toughness KIC ≥10 MPa·m , dense TiB2/[ZrO2-Al2O3] composites have been fabricated using pulsed electriccurrent pressure sintering (PECPS) at 1873 K under 50 MPa for 6.0 × 10 s in Ar. As the former starting materials, two kinds of TiB2 powders were adopted; i) mono-modal particle size (Ps) distribution with an average particle size <Ps> of 3.24 μm and ii) bi-modal Ps distribution with <Ps> of 3.06 μm, composed of the small Ps of 0.58 and the large Ps of 3.27 μm. On the hand, the latter was the mixed powders composed of ZrO2(2.5 mol%Y2O3) solid solution (ss) and α-Al2O3 powders: each primary Ps was 0.1~0.2 μm. Thus fabricated composites consisting of TiB2, tetragonal/monoclinic ZrO2 and α-Al2O3 with relative densities more than 99.0% showed improved mechanical properties, especially bi-modal TiB2/[ZrO2-Al2O3] composites revealed high Hv of 22.3 GPa and KIC of 12.8 MPa·m . These high-mechanical behaviors might be explained in terms of i) better powder particle configuration, ii) high chemical stability of TiB2, iii) the most proper composition, with adoption of iv) bi-modal TiB2 powder and v) the most suitable sintering condition.

funtai oyobi fummatsu yakin

Fabrication of Dense TiB&lt;sub&gt;2&lt;/sub&gt;/[ZrO&lt;sub&gt;2&lt;/sub&gt;-Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;] Composites with Both High Hardness (≥20 GPa) and Fracture Toughness (≥12 MPa·m&lt;sup&gt;1/2&lt;/sup&gt;) Simultaneously by Pulsed Electric-current Pressure Sintering