Determination of the phase boundary of the ferroelastic rutile to CaCl2transition in RuO2usingin situhigh-pressure and high-temperature Raman spectroscopy

2011 ◽  
Vol 84 (5) ◽  
Author(s):  
Shigeaki Ono ◽  
Kenji Mibe
Keyword(s):  
Raman Spectroscopy ◽  
High Temperature ◽  
Phase Boundary

Determination of cubic‐tetragonal phase boundary in Zr1−XYXO2−X/2solid solutions by Raman spectroscopy

1993 ◽  
Vol 74 (12) ◽  
pp. 7603-7605 ◽  
Author(s):  
Masatomo Yashima ◽  
Katsuya Ohtake ◽  
Haruo Arashi ◽  
Masato Kakihana ◽  
Masahiro Yoshimura
Keyword(s):  
Raman Spectroscopy ◽  
Phase Boundary ◽  
Tetragonal Phase

Use of Raman spectroscopy for determination effective heat treatment of carbon materials in high-temperature furnaces

2021 ◽  
Vol 1 ◽  
pp. 67-84
Author(s):  
V. M. Samoilov ◽  
◽  
A. V. Nakhodnova ◽  
M. A. Osmova ◽  
D. B. Verbets ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Raman Spectroscopy ◽  
High Temperature ◽  
Temperature Interval ◽  
Carbon Materials ◽  
Treatment Temperature ◽  
Temperature Fields ◽  
High Temperature Treatment ◽  
Reference Specimens

The aim of this work is to evaluate the use of Raman spectroscopy of carbon fibre-based (CF) reference samples for establishing the heat treatment temperature (HTT) in high-temperature (1000 – 3000 °C) furnaces used in production of a series of carbon materials. Based on obtained correlational relationships between Raman spectroscopy parameters and HTT, the use of the ID/IG parameter is suggested for obtaining the most exact and reproducible results. An experimental basis for the use of polyacrylonitrile-based (PAN) CF as reference specimens is provided. It is shown that for PAN-based CF samples treated in the high temperature interval (1000 – 3000 °С) the ID/IG parameter correlates well with X-Ray diffraction analysis parameters. A series of Raman spectroscopy of reference specimens potential uses the in determination of effective HTT of carbon materials in technological processes of production of carbon-carbon based composite materials, artificial graphites and PAN-based CF’s and in the determination of temperature fields of laboratory and industrial equipment for high-temperature treatment of carbon materials in the temperature interval 1000 – 3000 °C, specifically Tamman, vacuum electric resistance and Acheson furnaces, are examined.

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