Journal Article

FZJ-2017-07967

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Polymer Derived Oxidation Barrier Coatings for Mo-Si-B Alloys

Smokovych, I. (Corresponding author) ; Hasemann, G.FZJ* ; Krüger, M.FZJ* ; Scheffler, M.

2017
Elsevier Science Amsterdam [u.a.]

This record in other databases:  

Please use a persistent id in citations: doi:10.1016/j.jeurceramsoc.2017.06.048

Abstract: Thermodynamic analysis was carried out to predict the phase composition of a perhydridopolysilazane-type polymer derived ceramic coating on Mo5SiB2 matrix particles after heat treatment. The most probable chemical reactions between these constituents and resulting phases were calculated. The feasibility of PHPS/Mo5SiB2 chemical reactions was proved experimentally. An amorphous SiOxNy phase and free Si were found by X-ray diffraction analysis and Raman spectroscopy. The presence of these two phases explain the improvement in oxidation resistance of the Mo5SiB2 particles, which was found to be as twice as high at 800 °C and 1100 °C in air, compared to the unprotected plain Mo5SiB2 phase. The oxidation of the free silicon provided by the PHPS conversion was addressed as an oxygen trap.

---

Contributing Institute(s):

1. Werkstoffstruktur und -eigenschaften (IEK-2)

Research Program(s):

1. 111 - Efficient and Flexible Power Plants (POF3-111) (POF3-111)

Appears in the scientific report 2017

---

Database coverage:
; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

---