カスピダイン(3CaO・2SiO_2・CaF_2)の熱含量測定

圓尾, 弘樹; 井山, 裕文; 末廣, 拓也 他

高温学会誌, 2000, 26(4), 145-148

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Identifier to cite or link to this item: https://hdl.handle.net/11094/26054

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Title
カスピダイン(3CaO・2SiO_2・CaF_2)の熱含量測定
Measurement of Heat Content of Cuspidine (3CaO・2Si0_2・CaF_2)
カスピダイン　3CaO・2SiO_2・CaF_2　ノ　ネツ　ガンリョウ　ソクテイ
Creator
CreatorName
圓尾, 弘樹 ; マルオ, ヒロキ ; Maruo, Hiroki
NRID
1000040300660 1000040300660
CreatorName
井山, 裕文 ; イヤマ, ヒロフミ ; Iyama, Hirofumi
CreatorName
末廣, 拓也 ; スエヒロ, タクヤ ; Suehiro, Takuya
NRID
1000010179773 1000010179773
researchmap permalink
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CreatorName
田中, 敏宏 ; タナカ, トシヒロ ; Tanaka, Toshihiro
NRID
1000090029116 1000090029116
CreatorName
原, 茂太 ; ハラ, シゲタ ; Hara, Shigeta
Subject
Cuspidine
3CaO・2Si0_2・CaF_2
Heat Capacity
Abstract
The powder used as lubricant in continuous casting processes contains mainly CaO，SiO_2 and CaF_2. Cuspidine (3CaO・2SiO_2・CaF_2)is therefore formed usually after the powder melts. Only the information on crystal structures，lattice constants and phase equilibria has been reported for the cuspidine，but the heat capacity of it has not been measured yet. In the present work，the heat content of the cuspidine was measurered from 1104K to 1827K using the drop calorimeter. The heat content of the cuspidine was obtained as follows: △H_s=0.382T-135±15kJ/mol (solid phase) △H_l=0.854T-810±25kJ/mol (liquid phase) From these results，the enthalpy of melting at 1683K is 119 kJ/mol，and the entropy of melting is estimated to be 70.7 J/mol.K.
Publisher
高温学会
コウオン　ガッカイ
Source Title
高温学会誌
Volume (Issue)
26(4)
Page
145-148
Date of Issued
2000-07-20
Language
Japanese
Handle URL
https://hdl.handle.net/11094/26054
PISSN
03871096
NCID
AN00080051
Access Rights
open access
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article