Suppression of carbon contamination in SPSed CaF2 transparent ceramics by Mo foil

Ping Wang; Meijun Yang; Song Zhang; Rong Tu; Takashi Goto; Lianmeng Zhang

doi:10.1016/j.jeurceramsoc.2017.04.070

Suppression of carbon contamination in SPSed CaF₂ transparent ceramics by Mo foil

Ping Wang, Meijun Yang, Song Zhang, Rong Tu, Takashi Goto, Lianmeng Zhang

金属材料研究所・材料プロセス・評価研究部

研究成果: Article › 査読

10 被引用数 (Scopus)

抄録

Transparent calcium fluoride (CaF₂) ceramics were fabricated by spark plasma sintering (SPS) using Mo foil to separate from graphite die, and the effect of Mo foil on transparency, microstructure and carbon contamination was investigated. The discoloration was removed and the transmittance increased from 8% to 54% at the wavelength of 300 nm and 63% to 86% at 1100 nm by using Mo foil. The average grain size of CaF₂ ceramics SPSed at 1100 °C was 16 μm by using graphite sheet, whereas it was 260 μm by using Mo foil, indicating that ceramics with large grain size are possible to reach high transmittance. Raman spectroscopy and X-ray photoelectron spectroscopy revealed that carbon contamination in the CaF₂ ceramics using Mo foil decreased 78% than that shielded by graphite sheet.

本文言語	English
ページ（範囲）	4103-4107
ページ数	5
ジャーナル	Journal of the European Ceramic Society
巻	37
号	13
DOI	https://doi.org/10.1016/j.jeurceramsoc.2017.04.070
出版ステータス	Published - 2017 10

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1016/j.jeurceramsoc.2017.04.070

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引用スタイル

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title = "Suppression of carbon contamination in SPSed CaF2 transparent ceramics by Mo foil",

abstract = "Transparent calcium fluoride (CaF2) ceramics were fabricated by spark plasma sintering (SPS) using Mo foil to separate from graphite die, and the effect of Mo foil on transparency, microstructure and carbon contamination was investigated. The discoloration was removed and the transmittance increased from 8% to 54% at the wavelength of 300 nm and 63% to 86% at 1100 nm by using Mo foil. The average grain size of CaF2 ceramics SPSed at 1100 °C was 16 μm by using graphite sheet, whereas it was 260 μm by using Mo foil, indicating that ceramics with large grain size are possible to reach high transmittance. Raman spectroscopy and X-ray photoelectron spectroscopy revealed that carbon contamination in the CaF2 ceramics using Mo foil decreased 78% than that shielded by graphite sheet.",

keywords = "CaF transparent ceramics, Carbon contamination, Mo foil, Transmittance",

author = "Ping Wang and Meijun Yang and Song Zhang and Rong Tu and Takashi Goto and Lianmeng Zhang",

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AU - Wang, Ping

AU - Yang, Meijun

AU - Zhang, Song

AU - Tu, Rong

AU - Goto, Takashi

AU - Zhang, Lianmeng

PY - 2017/10

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N2 - Transparent calcium fluoride (CaF2) ceramics were fabricated by spark plasma sintering (SPS) using Mo foil to separate from graphite die, and the effect of Mo foil on transparency, microstructure and carbon contamination was investigated. The discoloration was removed and the transmittance increased from 8% to 54% at the wavelength of 300 nm and 63% to 86% at 1100 nm by using Mo foil. The average grain size of CaF2 ceramics SPSed at 1100 °C was 16 μm by using graphite sheet, whereas it was 260 μm by using Mo foil, indicating that ceramics with large grain size are possible to reach high transmittance. Raman spectroscopy and X-ray photoelectron spectroscopy revealed that carbon contamination in the CaF2 ceramics using Mo foil decreased 78% than that shielded by graphite sheet.

AB - Transparent calcium fluoride (CaF2) ceramics were fabricated by spark plasma sintering (SPS) using Mo foil to separate from graphite die, and the effect of Mo foil on transparency, microstructure and carbon contamination was investigated. The discoloration was removed and the transmittance increased from 8% to 54% at the wavelength of 300 nm and 63% to 86% at 1100 nm by using Mo foil. The average grain size of CaF2 ceramics SPSed at 1100 °C was 16 μm by using graphite sheet, whereas it was 260 μm by using Mo foil, indicating that ceramics with large grain size are possible to reach high transmittance. Raman spectroscopy and X-ray photoelectron spectroscopy revealed that carbon contamination in the CaF2 ceramics using Mo foil decreased 78% than that shielded by graphite sheet.

KW - CaF transparent ceramics

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KW - Mo foil

KW - Transmittance

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