不同温度下烧结Ca2MgSi2O7生物陶瓷的显微组织演变、晶粒生长动力学和力学性能

IF 0.9 4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS
H. Mohammadi, Y. B. Baba Ismail, K. Shariff, A. M. Mohd Noor
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引用次数: 0

摘要

采用混合氧化物源,采用湿法固态合成法制备了阿克曼石(Ca2MgSi2O7)陶瓷粉体。相的形成机制包括透辉石、丝光石等过渡化合物的形成。干燥混合物的压实盘在1200、1225和1250℃下烧结。考察了烧结温度对铁长石陶瓷物理性能(相对密度和直径收缩率)、晶粒生长动力学(晶粒生长活化能)和力学性能(抗弯强度)的影响。结果表明,烧结温度从1200℃升高到1250℃。C降低了Ca2MgSi2O7陶瓷的孔隙率,提高了陶瓷的直径收缩率和相对密度。晶粒生长活化能随烧结温度的升高而增大。最后,密度的增加产生了具有高机械强度的陶瓷。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Microstructure evolution, grain growth kinetics and mechanical properties of Ca2MgSi2O7 bioceramics sintered at various temperatures
Akermanite (Ca2MgSi2O7) ceramic powders were prepared by a wet solid-state synthesis process using a mixture of oxide sources. The mechanism of phase formation included the formation of transition compounds such as diopside and merwinite. The compacted disks of the dried mixture were sintered at 1200, 1225 and 1250?C for different dwell times (2, 4 and 6 h). The effect of sintering temperature on the physical properties (relative density and diameter shrinkage), grain growth kinetics (grain growth activation energy) and mechanical properties (flexural strength) of the akermanite ceramics were evaluated. It was shown that the increase in sintering temperature from 1200 to 1250?C decreased the porosity and increased the diameter shrinkage and relative density of Ca2MgSi2O7 ceramics. The grain growth activation energy was also found to increase with the increase of sintering temperature. Finally, the increase in density yielded ceramics with high mechanical strength.
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来源期刊
Processing and Application of Ceramics
Processing and Application of Ceramics MATERIALS SCIENCE, CERAMICS-
CiteScore
1.90
自引率
9.10%
发文量
14
审稿时长
10 weeks
期刊介绍: Information not localized
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