第三リン酸カルシウム含有ディオプサイト系ガラスセラミックスの機械的性質

抄録

Elastic modulus, Vickers hardness, flexural strength and fracture toughness of diopside (D) glass ceramics containing 33, 38, 43 and 48wt% tricalcium phosphate (TCP) were measured. The glass ceramics were prepared by sintering and crystallization of glass powders. Precipitated crystals were diopside, β-TCP and hydroxy apatite when sintered at 1050° and 1100°C, and diopside, β-TCP and α-TCP at 1150°C. Maximum flexural strength of 67 D-33 TCP, 62 D-38 TCP, 57 D-43 TCP and 52 D-48 TCP were 223, 218, 216 and 163 MPa, respectively. Maximum Young's modulus was 122 GPa for 62 D-38 TCP, maximum Vickers hardness was 494kg/mm² for 57 D-43 TCP, and maximum fracture toughness was 2.15MPa⋅m^1/2 for 62 D-38 TCP.