Thermal conductivities of alkali–silicate and calcium–alkali–silicate melts

Tsuyoshi Nishi; Katsuya Ohnuma; Kento Tanaka; Takumi Manako; Yoshifumi Yamato; Hiromichi Ohta; Sohei Sukenaga; Hiroyuki Shibata; Toshiaki Kakihara

doi:10.1016/j.jnoncrysol.2019.01.038

Thermal conductivities of alkali–silicate and calcium–alkali–silicate melts

Tsuyoshi Nishi, Katsuya Ohnuma, Kento Tanaka, Takumi Manako, Yoshifumi Yamato, Hiromichi Ohta, Sohei Sukenaga, Hiroyuki Shibata, Toshiaki Kakihara

Division of Process and System Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Thermal conductivities of alkali–silicate (R ₂ O–SiO ₂ (R = Li, Na, K)) and calcium–alkali–silicate (CaO–R ₂ O–SiO ₂ (R = Li, Na, K)) melts were evaluated by combining their thermal effusivities measured using the front-heating front-detection laser flash method with their density and specific heat capacity. Results of the evaluation revealed that the temperature-dependences of the thermal conductivities of the R ₂ O–SiO ₂ and CaO–R ₂ O–SiO ₂ (R = Li, Na, K) melts are small over the temperature range investigated. Moreover, the thermal conductivities of the CaO–R ₂ O–SiO ₂ melts are almost equal to those of the R ₂ O–SiO ₂ melts. Therefore, the network frame of the CaO–R ₂ O–SiO ₂ melts can presumably become dense owing to the ion bonding between Ca ²⁺ and the non-bridging oxygen.

Original language	English
Pages (from-to)	36-40
Number of pages	5
Journal	Journal of Non-Crystalline Solids
Volume	511
DOIs	https://doi.org/10.1016/j.jnoncrysol.2019.01.038
Publication status	Published - 2019 May 1

Keywords

Alkali silicate
Calcium alkali silicate
Front-heating front-detection laser flash method
Thermal conductivity
Thermal effusivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/j.jnoncrysol.2019.01.038

Fingerprint Dive into the research topics of 'Thermal conductivities of alkali–silicate and calcium–alkali–silicate melts'. Together they form a unique fingerprint.

Cite this

Thermal conductivities of alkali–silicate and calcium–alkali–silicate melts. / Nishi, Tsuyoshi; Ohnuma, Katsuya; Tanaka, Kento; Manako, Takumi; Yamato, Yoshifumi; Ohta, Hiromichi; Sukenaga, Sohei ; Shibata, Hiroyuki; Kakihara, Toshiaki.

In: Journal of Non-Crystalline Solids, Vol. 511, 01.05.2019, p. 36-40.

Research output: Contribution to journal › Article › peer-review

@article{188dfdd6ce744d138567cc9df72f60b5,

title = "Thermal conductivities of alkali–silicate and calcium–alkali–silicate melts",

abstract = " Thermal conductivities of alkali–silicate (R 2 O–SiO 2 (R = Li, Na, K)) and calcium–alkali–silicate (CaO–R 2 O–SiO 2 (R = Li, Na, K)) melts were evaluated by combining their thermal effusivities measured using the front-heating front-detection laser flash method with their density and specific heat capacity. Results of the evaluation revealed that the temperature-dependences of the thermal conductivities of the R 2 O–SiO 2 and CaO–R 2 O–SiO 2 (R = Li, Na, K) melts are small over the temperature range investigated. Moreover, the thermal conductivities of the CaO–R 2 O–SiO 2 melts are almost equal to those of the R 2 O–SiO 2 melts. Therefore, the network frame of the CaO–R 2 O–SiO 2 melts can presumably become dense owing to the ion bonding between Ca 2+ and the non-bridging oxygen. ",

keywords = "Alkali silicate, Calcium alkali silicate, Front-heating front-detection laser flash method, Thermal conductivity, Thermal effusivity",

author = "Tsuyoshi Nishi and Katsuya Ohnuma and Kento Tanaka and Takumi Manako and Yoshifumi Yamato and Hiromichi Ohta and Sohei Sukenaga and Hiroyuki Shibata and Toshiaki Kakihara",

year = "2019",

month = may,

day = "1",

doi = "10.1016/j.jnoncrysol.2019.01.038",

language = "English",

volume = "511",

pages = "36--40",

journal = "Journal of Non-Crystalline Solids",

issn = "0022-3093",

publisher = "Elsevier",

}

TY - JOUR

T1 - Thermal conductivities of alkali–silicate and calcium–alkali–silicate melts

AU - Nishi, Tsuyoshi

AU - Ohnuma, Katsuya

AU - Tanaka, Kento

AU - Manako, Takumi

AU - Yamato, Yoshifumi

AU - Ohta, Hiromichi

AU - Sukenaga, Sohei

AU - Shibata, Hiroyuki

AU - Kakihara, Toshiaki

PY - 2019/5/1

Y1 - 2019/5/1

N2 - Thermal conductivities of alkali–silicate (R 2 O–SiO 2 (R = Li, Na, K)) and calcium–alkali–silicate (CaO–R 2 O–SiO 2 (R = Li, Na, K)) melts were evaluated by combining their thermal effusivities measured using the front-heating front-detection laser flash method with their density and specific heat capacity. Results of the evaluation revealed that the temperature-dependences of the thermal conductivities of the R 2 O–SiO 2 and CaO–R 2 O–SiO 2 (R = Li, Na, K) melts are small over the temperature range investigated. Moreover, the thermal conductivities of the CaO–R 2 O–SiO 2 melts are almost equal to those of the R 2 O–SiO 2 melts. Therefore, the network frame of the CaO–R 2 O–SiO 2 melts can presumably become dense owing to the ion bonding between Ca 2+ and the non-bridging oxygen.

AB - Thermal conductivities of alkali–silicate (R 2 O–SiO 2 (R = Li, Na, K)) and calcium–alkali–silicate (CaO–R 2 O–SiO 2 (R = Li, Na, K)) melts were evaluated by combining their thermal effusivities measured using the front-heating front-detection laser flash method with their density and specific heat capacity. Results of the evaluation revealed that the temperature-dependences of the thermal conductivities of the R 2 O–SiO 2 and CaO–R 2 O–SiO 2 (R = Li, Na, K) melts are small over the temperature range investigated. Moreover, the thermal conductivities of the CaO–R 2 O–SiO 2 melts are almost equal to those of the R 2 O–SiO 2 melts. Therefore, the network frame of the CaO–R 2 O–SiO 2 melts can presumably become dense owing to the ion bonding between Ca 2+ and the non-bridging oxygen.

KW - Alkali silicate

KW - Calcium alkali silicate

KW - Front-heating front-detection laser flash method

KW - Thermal conductivity

KW - Thermal effusivity

UR - http://www.scopus.com/inward/record.url?scp=85061631987&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85061631987&partnerID=8YFLogxK

U2 - 10.1016/j.jnoncrysol.2019.01.038

DO - 10.1016/j.jnoncrysol.2019.01.038

M3 - Article

AN - SCOPUS:85061631987

VL - 511

SP - 36

EP - 40

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

SN - 0022-3093

ER -