Laser heating induced spatial homogenization of phase separated Na $_{2}$ O-B $_{2}$ O $_{3}$ -SiO $_{2}$ glass plate with bearing NiO for heat center and structural probe

NiOを熱中心及びプローブとしたNa $_{2}$ O-B $_{2}$ O $_{3}$ -SiO $_{2}$ ガラスのレーザー加熱誘起構造均一化

Tomita, Kana*; Kishi, Tetsuo*; Matsumura, Daiju; Yano, Tetsuji*

Na $_{2}$ O-B $_{2}$ O $_{3}$ -SiO $_{2}$ glass plate phase separated in spinodal was partially remelted and homogenized by laser heating. As heat generation source, 0.8 mol% NiO was added to absorb continuous-wave laser with =1064 nm. After acid leaching, borate phase with NiO was remaining partially in laser irradiated area. X-ray Absorption Fine Structure (XAFS) spectra revealed that Ni $^{2+}$ in laser irradiated area showed coordination change from 6 coordinated octahedral to 5 coordinated in square pyramid along with apparent color change from green to brown. Similar change was observed in water-quenched specimen from 1000 $^{circ}$ C. Ni $^{2+}$ transition gave additional structural information in phase separate / homogeneous glass, which was difficult to be distinguished by spectroscopy which focuses on covalent bonding of glass network.

使用言語	:	English
掲載資料名	:	Journal of Non-Crystalline Solids
巻	:	597
号	:
ページ数	:	p.121891_1 - 121891_10
発行年月	:	2022/12
発表会議名	:
開催年月	:
開催都市	:
開催国	:
キーワード	:	XAFS; ホウ珪酸ガラス; レーザー加熱

特許データ	:
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論文URL	:	https://doi.org/10.1016/j.jnoncrysol.2022.121891
研究データの公開先DOI	:
使用施設	:	SPring-8(大型放射光施設)
広報プレスリリース	:
論文解説記事 (成果普及情報誌)	:
受委託・共同研究相手機関	:	東京工業大学

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Web of Science® Times Cited Count	:	被引用回数：評価・統計等のため最新の被引用回数を確認したい場合は、直接Web of Science®をご確認ください。 http://www.webofknowledge.com/wos
InCites™	:	パーセンタイル：14.66 分野：Materials Science, Ceramics
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登録番号 : AA20220471
抄録集掲載番号 : 50001089
論文投稿番号 : 25850

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Laser heating induced spatial homogenization of phase separated NaO-BO-SiO glass plate with bearing NiO for heat center and structural probe

NiOを熱中心及びプローブとしたNaO-BO-SiOガラスのレーザー加熱誘起構造均一化

Laser heating induced spatial homogenization of phase separated Na $_{2}$ O-B $_{2}$ O $_{3}$ -SiO $_{2}$ glass plate with bearing NiO for heat center and structural probe

NiOを熱中心及びプローブとしたNa $_{2}$ O-B $_{2}$ O $_{3}$ -SiO $_{2}$ ガラスのレーザー加熱誘起構造均一化