Formation of Titanium Sulfide from Titanium Oxycarbonitride by CS2 Gas

Ahmadi, Eltefat; Yashima, Yuta; Suzuki, Ryosuke O. et al.

Metallurgical and materials transactions B-process metallurgy and materials processing science, 2018, 49(4), 1808-1821

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アクセス権
open access
URI
https://hdl.handle.net/2115/75072
タイトル
Formation of Titanium Sulfide from Titanium Oxycarbonitride by CS2 Gas
著者
Ahmadi, Eltefat ; Yashima, Yuta ; Suzuki, Ryosuke O. ; Rezan, Sheikh Abdul
著者名
Ahmadi, Eltefat
著者名
Yashima, Yuta
e-Rad_Researcher
80179275
著者名
Suzuki, Ryosuke O.
著者名
Rezan, Sheikh Abdul
言語
英語
キーワード
Titanium sulfide
titanium nitride
sulfurization
oxycarbonitride
発行日
2018-08
出版者
Springer
収録物名
Metallurgical and materials transactions B-process metallurgy and materials processing science
巻(号)
49(4)
ページ
1808-1821
抄録
Previously this group reported that a good quality titanium metal powder can be produced from titanium sulfides by electrochemical OS process. In this study, the sulfurization procedure was examined to synthesize titanium sulfide from titanium oxycarbonitride by CS2 gas. The experiments were carried out in the temperature range of 1173 K to 1523 K (900 A degrees C to 1250 A degrees C) in a tube reactor with continuously flowing argon (Ar) as carrier gas of CS2. The formation of titanium sulfide phases from the commercial TiN, TiC, and TiO powders was studied as the initial step. Then, TiO0.02C0.13N0.85 coming from ilmenite was sulfurized to prepare single phase of titanium sulfide. The products were characterized by X-ray diffraction, and the morphology of the sulfides was rigorously investigated, and the sulfur, oxygen, and carbon contents in the products were analyzed. The process was remarkably dependent on the temperature and time. TiN and TiO0.02C0.13N0.85 powders could be fully converted to the single phase of Ti2.45S4 (Ti2+x S-4) at 1473 K (1200 A degrees C) in 3.6 ks. The maximum weight gain of TiN sample was similar to 55.3 pct indicating a full conversion of TiN to Ti2S3 phase. The carbon and oxygen contents in this sulfide prepared from the oxycarbonitride were about 1.8 wt pct C and 1.4 wt pct O, respectively. Therefore, the titanium sulfide could be a promising feedstock for the production of commercial grade titanium powder.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
権利情報
This is a post-peer-review, pre-copyedit version of an article published in [Metallurgical and materials transactions B-process metallurgy and materials processing science]. The final authenticated version is available online at: http://dx.doi.org/[10.1007／s11663-018-1278-8].
PISSN
1073-5615
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1007/s11663-018-1278-8