Study of the thermal conductivity of the molten glass of solidification of radioactive waste by inversion and ultra-short time laser flash method

• Project/Area Number: 24656565
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nuclear engineering
• Research Institution: Ibaraki University
• Principal Investigator: OHTA Hiromichi 茨城大学, 工学部, 教授 (70168946)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 高温融体 / 珪酸塩 / ガラス固化 / バックエンド / 融体物性 / 放射性廃棄物 / 熱浸透率 / レーザーフラッシュ法 / 硼珪酸塩

Outline of Final Research Achievements

The thermal conductivity of the molten glass of solidification of radioactive waste is measured by inversion and ultra-short time laser flash method. In the method, The laser pulse is irradiated to the bottom surface of the thin platinum cells. The temperature response of the surface is measured by the infrared ray detector. The model to reveal relation of the structure of melts and thermal conductivity are developed. A random network model represents the decrease of thermal conductivity by breaking network in melts. A model considering large complex silicate ion shows the more successful result. The effect of cation in melts is also considered.

Research Products

• [Journal Article] Thermal Conductivity of Molten Silicate of Al2O3-CaO-Na2O-SiO2 Measured by Means of a Front Heating-Front Detection Laser Flash Method (2012)
  • Author(s): Hiroki Hasegawa; Takaya Kowatari; Yasuhiro Shiroki; Hiroyuki Shibata; Hiromichi Ohta; Yoshio Waseda
  • Journal Title: Metallurgical and Materials Transactions B Volume: 43 Issue: 6 Pages: 1413-1419
  • DOI: 10.1007/s11663-012-9745-0
• [Journal Article] Thermal Conductivity Measurements of Some Synthetic Al2O3-CaO-SiO2 Slags by Means of a Front-Heating and Front-Detection Laser-Flash Method (2012)
  • Author(s): Hiroki Hasegawa,Yasuhiro Hoshino,Takeshi Kasamoto,Yuuki Akaida,Takaya Kowatari,Yasuhiro Shiroki,Hiroyuki Shibata,Hiromichi Ohta,Yoshio Waseda
  • Journal Title: Metallurgical and Materials Transactions B Volume: 43 Issue: 6 Pages: 1405-1412
  • DOI: 10.1007/s11663-012-9702-y
• [Journal Article] Recent Development in the Investigation on Thermal Conductivity of Silicate Melts (2012)
  • Author(s): Hiroki Hasegawa, Hiromichi Ohta, Hiroyuki Shibata and Yoshio Waseda
  • Journal Title: High Temp. Mater. Proc. Volume: 31 Issue: 4-5 Pages: 491-499
  • DOI: 10.1515/htmp-2012-0085
• [Presentation] CaO-SiO2-M2O(M=Li，Na，K)ケイ酸塩融体の熱伝導率 (2015)
  • Author(s): 太田弘道・小嶋純平・前園尭輝，助永壮平・柴田浩幸
  • Organizer: 第169回春季講演大会 日本鉄鋼協会
  • Place of Presentation: 東京大学 駒場キャンパス
  • Year and Date: 2015-03-19
• [Presentation] 複合材材料の熱拡散率の測定と予測 (2014)
  • Author(s): 太田弘道
  • Organizer: 熱処理第78回秋季講演大会
  • Place of Presentation: 鹿児島大学郡元キャンパス稲盛会館ホール
  • Year and Date: 2014-11-27
  • Invited
• [Presentation] 周期加熱放射測温法による高精度・高速熱拡散率解析法 (2014)
  • Author(s): 粟野孝昭， 羽鳥仁人， 中山峻， 佐藤優友， 太田弘道
  • Organizer: 第35回日本熱物性シンポジウム
  • Place of Presentation: 東京工業大学 大岡山キャンパス
  • Year and Date: 2014-11-23
• [Presentation] 周期加熱放射測温法によるサーマルインターフェースマテリアルの測定 (2014)
  • Author(s): 野口秀則，羽鳥仁人，岩野祐平，安藤伸恵，薄井俊季，太田弘道
  • Organizer: 第35回日本熱物性シンポジウム
  • Place of Presentation: 東京工業大学 大岡山キャンパス
  • Year and Date: 2014-11-22
• [Presentation] レーザフラッシュ法による面積熱拡散時間法を用いたPA6(ナイロン6)基複合材料の熱拡散率の測定 (2014)
  • Author(s): 安藤伸恵，岩野祐平，薄井俊季，太田弘道，西義武,神田昌枝
  • Organizer: 第35回日本熱物性シンポジウム
  • Place of Presentation: 東京工業大学 大岡山キャンパス
  • Year and Date: 2014-11-22
• [Presentation] CaO-SiO2-Al203-R2O(R=NaK,Li)系融融ケイ酸塩の熱伝導率と粘性係数の関係 (2014)
  • Author(s): 猪瀬司，小嶋純平，前園尭輝， 太田弘道， 助永壮平，柴田浩幸
  • Organizer: 第35回日本熱物性シンポジウム
  • Place of Presentation: 東京工業大学 大岡山キャンパス
  • Year and Date: 2014-11-22
• [Presentation] Isotropic multiphase model for thermal conductivity of CaO-K2O-SiO2 and Al2O3-CaOSiO2 melts (2014)
  • Author(s): 太田弘道、猪瀬司、小嶋純平、柴田浩幸、助永壮平
  • Organizer: 20th EUROPEAN CONFERENCE ON THERMOPHYSICAL PROPERTIES
  • Place of Presentation: PORTO Univ. PORTUGAL
  • Year and Date: 2014-09-01
• [Presentation] CaO-Na2O-SiO2融体の三次元モデルによる熱伝導率解析
  • Author(s): 猪瀬司、太田弘道
  • Organizer: 日本鉄鋼協会第166回秋季講演大会
  • Place of Presentation: 金沢大学 角間キャンパス
• [Presentation] ケイ酸塩融体の熱伝導率の等方複相モデルによる解析
  • Author(s): 太田弘道,猪瀬司・小嶋純平，田浩幸,助永壮平
  • Organizer: 第 167 回春季講演大会
  • Place of Presentation: 東京工業大学大岡山キャンパス
• [Presentation] CaO-K2O-SiO2融体の熱伝導率
  • Author(s): 小嶋 純平, 長谷川 裕樹, 白木 康裕, 猪瀬 司, 柴田 浩幸,助永 壮平, 太田 弘道
  • Organizer: 第３４回日本熱物性シンポジウム
  • Place of Presentation: 富山県民会館
• [Presentation] Thermal Conductivity of Molten CaO-Na2O-SiO2 Silicates
  • Author(s): Hiroyuki Shibata, Hiromichi Ohta, Takaya Kowatari, Hiroki Hasegawa, Souhei Sukenaga
  • Organizer: 10th Asian Thermophysical Properties Conference (ATPC 2013)
  • Place of Presentation: Jeju, Korea
• [Presentation] Thermal Conductivity of Silicate Melts Containing CaF2 at High Temperature
  • Author(s): Hiromichi Ohta, Hiroyuki Shibata,
  • Organizer: The 3rd International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining(CSSCR2013 Conference)
  • Place of Presentation: Lejondals Slott, Sweden
• [Presentation] Analysis for Thermal Conductivity of Silicate Melts by 3D Network Structur e Model
  • Author(s): Hiroyuki Shibata ,Hiromichi Ohta
  • Organizer: The 3rd International Symposium on Cutting Edge of Computer Simulation of Solidification, Casting and Refining(CSSCR2013 Conference)
  • Place of Presentation: Lejondals Slott, Sweden
• [Presentation] Measurement of thermal effusivity of borosilicate melt
  • Author(s): Yasuhiro Shiroki
  • Organizer: ISCIU8(The 8th International Student Conference at Ibaraki University)
  • Place of Presentation: Ibaraki University, Hitachi Japan
• [Presentation] 硼珪酸塩融体の熱浸透率測定
  • Author(s): 白木康裕,長谷川裕樹,古渡貴也,柴田浩幸,柿原敏明,太田弘道,山﨑淳司
  • Organizer: 第33回日本熱物性シンポジウム
  • Place of Presentation: 大阪市立大学
• [Presentation] Thermal conductivity of molten silicate measured by means of a novel laser flash method
  • Author(s): Hiroyuki SHIBATA, Hiroki HASEGAWA, Takaya KOWATARI, Yasuhiro SHIROKI, Hiromichi OHTA and Yoshio WASEDA
  • Organizer: The 3rd Symposium of the Research Center for Sustainable Science & Engineering "Science & Engineering toward the Establishment of Sustainable Society"
  • Place of Presentation: MRAM,Tohoku Univ.
• [Presentation] ケイ酸塩融体の熱伝導率と結合性の関係
  • Author(s): 猪瀬 司、長谷川 裕樹、古渡 貴也、白木 康裕、太田 弘道、柴田 浩幸
  • Organizer: 日本鉄鋼協会 2012年秋季 講演大会
  • Place of Presentation: 愛媛大学 松山市
• [Presentation] Thermal conductivity of R-Na2O-SiO2(R=Al2O3, CaO) melts
  • Author(s): Ohta HIROMICHI, Hiroyuki SHIBATA, Hiroki HASEGAWA, Takaya KOWATARI, Yasuhiro SHIROKI, Shin-Ya KITAMURA and Yoshio Waseda
  • Organizer: Ninth International Conference on Molten Slags, Fluxes and Salts (MOLTEN12)
  • Place of Presentation: Beijing, China