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β-硅酸钙陶瓷因具备良好的生物活性在骨修复领域备受关注，但传统高温烧结制备路线能耗高，制备温度普遍在800～1100 ℃，烧结后得到的陶瓷材料相对密度普遍低于90%，从而导致力学性能不佳。为解决上述问题，本研究采用冷烧结工艺，在质量分数为20%、浓度为3 mol/L的HCl液相辅助及300 ℃、400 MPa压力下保温30 min，成功制备出相对致密度达89%的β-硅酸钙陶瓷，其弯曲强度达（74.14 ± 9.91）MPa，在冷烧结陶瓷中处于领先水平。同时，本文系统探究了烧结温度、压力、保温时间、HCl溶液浓度及添加量5个因素对β-硅酸钙陶瓷致密化过程和性能的影响机制。本工作为力学可靠的β-硅酸钙陶瓷提供了一种高效低温制备新路径，并为其在生物医学等领域的后续应用奠定了重要基础。
Abstract：β-Calcium silicate ceramics have attracted attention in the field of bone repair due to their good bioactivity. However， the traditional high-temperature sintering preparation route has high energy consumption， with preparation temperatures generally ranging from 800 to 1100 ℃. The ceramic materials obtained after sintering typically have a relative density of less than 90%， resulting in poor mechanical properties. To address these issues， this study employed a cold sintering process under the assistance of an HCl aqueous solution with a mass fraction of 20% and a concentration of 3 mol/L， and under conditions of 300 °C and 400 MPa pressure for 30 minutes. This successfully produced β-calcium silicate ceramics with a relative density of up to 89% and a flexural strength of (74.14 ± 9.91) MPa， which is at the leading level among cold-sintered ceramics. Meanwhile， this 0Fpaper systematically investigated the mechanisms by which five factors-sintering temperature， pressure， holding time， concentration of HCl solution， and additive content-affect the densification process and properties of β-calcium silicate ceramics. This work provides an efficient low-temperature preparation route for mechanically reliable β-calcium silicate ceramics and lays an important foundation for their subsequent applications in biomedical and other fields.
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基本信息:
DOI：10.19886/j.cnki.dhdz.2026.0083
中图分类号:R318.08;TQ174.1
引用信息:
[1]郭素强,丁奇,司明明,等.冷烧结制备力学可靠的β-硅酸钙陶瓷[J].东华大学学报(自然科学版)().DOI:10.19886/j.cnki.dhdz.2026.0083.
基金信息:
国家自然科学基金(52550001，52502057，52532002)
2026-05-09
2026-05-09
2026-05-09