HYDRATION IN THE SYSTEM CA2SIO4-CA3(PO4)2 AT 90-DEGREES-C

被引：12
|
作者：
BARNES, MW
KLIMKIEWICZ, M
BROWN, PW
机构：
[1] Materials Research Laboratory, Pennsylvania State University, University Park, Pennsylvania
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1992年 / 75卷 / 06期
关键词：
HYDRATION; CALCIUM SILICATE; CALCIUM PHOSPHATE; HIGH TEMPERATURE; HYDROXYLAPATITE;
D O I：
10.1111/j.1151-2916.1992.tb04204.x
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Compositions along the Ca2SiO4-Ca3(PO4)2 join were hydrated at 90-degrees-C. Mixtures containing 15, 38, 50, 80, and 100 mol% Ca3(PO4)2 were fired at 1500-degrees-C, forming nagelschmidtite + a'-CaSiO4, A-phase, and silicocarnotite and a-Ca3(PO4)2, respectively. Hydration of these produces hydroxylapatite regardless of composition. Calcium silicate hydrate gel is produced when Ca2SiO4 not-equal 0 and portlandite when Ca2SiO4 is >50%. Relative hydration reactivities are a-Ca3(PO4)2 > nagelschmidtite > alpha'-Ca2SiO4 > A-phase > silicocarnotite. Hydration in the presence of silica or lime influences the amount of portlandite produced. Hydration in NaOH solution produces 14-angstrom tobermorite rather than calcium silicate hydrate gel.
引用
收藏
页码：1423 / 1429
页数：7
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