摘要
通过悬浮液混合法制得的不同比例的非晶磷灰石（ACP）与羟基磷灰石（HA）的复合粉末作为原料，经压制成型烧结，测定块体的硬度、断裂韧性和抗弯强度，探讨混合比例和保温时间对块体组织和力学性能的影响。结果表明，混合粉末（ωACP=25mass％-75mass％）的烧结块体由13-TCP相和HA相组成，且两相分散均匀，β-TCP晶粒得到了细化。通过调节混合粉末中ACP／HA的比例，可以调节烧结块体中13-TCP与HA的相含量。混合粉末ωACP为75mass％时，经过1150℃、保温2．0h烧结后，块体材料的硬度和断裂韧性最好。
The powder consisting of different ratios amorphous calciumphosphate （ACP） and hydroxyapatite （HA） was produced via their blended suspension liquid, and then fabricated into tablets and sintered. Microhardness, fracture toughness and flexure strength of the specimens were tested to investigate the effect of the ratio of raw material and holding time on microstructure and mechanical properties. The results show that the microstructure of fabricated specimens from blended powder with different ωACP values （from 25 mass% to 75 mass% ） are formed by β-TCP and HA phases, and they are uniformly distributed. As a result, the phase contents in sintered ceramic can be tailored by the controlling of the ACP/HA ratio in the powder. In addition, sintered specimens fabricated with 75 mass% ACP at 1150 ℃ for 2.0 h present the highest hardness and toughness.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2014年第3期8-12,共5页
Transactions of Materials and Heat Treatment
