Journal Article

PUBDB-2017-01493

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Transparent polycrystalline cubic silicon nitride

Nishiyama, N. (Corresponding author)DESY* ; Ishikawa, R. ; Ohfuji, H. ; Marquardt, H.Extern* ; Kurnosov, A.Extern* ; Taniguchi, T.Extern* ; Kim, B.-N. ; Yoshida, H. ; Masuno, A. ; Bednarcik, J.DESY* ; Kulik, E.DESY* ; Ikuhara, Y. ; Wakai, F. ; Irifune, T.

2017
Nature Publishing Group London

This record in other databases:        

Please use a persistent id in citations: doi:10.1038/srep44755  doi:10.3204/PUBDB-2017-01493

Abstract: Glasses and single crystals have traditionally been used as optical windows. Recently, there has been a high demand for harder and tougher optical windows that are able to endure severe conditions. Transparent polycrystalline ceramics can fulfill this demand because of their superior mechanical properties. It is known that polycrystalline ceramics with a spinel structure in compositions of MgAl$_2$O$_4$ and aluminum oxynitride ($\gamma$-AlON) show high optical transparency. Here we report the synthesis of the hardest transparent spinel ceramic, i.e. polycrystalline cubic silicon nitride (c-Si$_3$N$_4$). This material shows an intrinsic optical transparency over a wide range of wavelengths below its band-gap energy (258 nm) and is categorized as one of the third hardest materials next to diamond and cubic boron nitride (cBN). Since the high temperature metastability of c-Si$_3$N$_4$ in air is superior to those of diamond and cBN, the transparent c-Si$_3$N$_4$ ceramic can potentially be used as a window under extremely severe conditions.

---

Contributing Institute(s):

1. PETRA III Extension (FS-PEX)
2. Experimentebetreuung PETRA III (FS-PE)
3. DOOR-User (DOOR)

Research Program(s):

1. 6213 - Materials and Processes for Energy and Transport Technologies (POF3-621) (POF3-621)
2. 6G3 - PETRA III (POF3-622) (POF3-622)

Experiment(s):

1. PETRA Beamline P02.1 (PETRA III)

Appears in the scientific report 2017

---

Database coverage:
; ; ; ; BIOSIS Previews ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection ; Zoological Record

---