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

Three stainless steels: 25Cr20Ni, 21Cr11Ni (1) and 21Cr11Ni (2) have been oxidised in air at 1,323 K for 2 h. The three materials form oxide layers 1 to 3 μm thick with MnCr 2 O 4 external crystals and Cr 2 O 3 inner ones. There are a SiO 2 barrier below Cr 2 O 3 , in the oxide-metal interface. SiO 2 also forms intra and intergranular precipitates in the metal, which are specially abundant in 21Cr11Ni materials. The theoretical predictions about σ-phase formation tendencies are confirmed after a treatment at 1,073 K for 400 h: 25Cr20Ni forms 10 % vol. σ-phase, while both 21Cr11Ni form few σ-phase or they do not form it at all.

Comportamiento a altas temperaturas de aceros inoxidables austeníticos refractarios: Formación de fase σ y oxidación al aire