TY - JOUR
T1 - Machinable calcium pyrophosphate glass-ceramics
AU - Kasuga, Toshihiro
AU - Terada, Miwako
AU - Nogami, Masayuki
AU - Niinomi, Mitsuo
N1 - Funding Information:
The authors thank Dr. Subramanian Bharathi for critical review of the manuscript. This research was partly supported by Osawa Scientific Studies Grants Foundation.
PY - 2001/3
Y1 - 2001/3
N2 - Glass-ceramics containing a large amount of calcium pyrophosphate (β-Ca2P2O7) crystal were prepared via crystallization and sintering; compacts of a calcium phosphate glass powders with a composition of 60CaO · 30P2O5 · 5TiO2 · 5Na2O (in mol%) were heated for 3-6 h at 850 °C in air. The compacts were densified by the viscous flow of the glassy phases during heating. The calcium phosphate glass-ceramics were found to show a bending strength of approximately 100 MPa, and they were easy to machine, as confirmed by a drilling test using a conventional carbide tool. The machinability is thought to arise from the microstructure consisting predominantly of the interlocking and platelike β-Ca2P2O7 precipitated in the glass.
AB - Glass-ceramics containing a large amount of calcium pyrophosphate (β-Ca2P2O7) crystal were prepared via crystallization and sintering; compacts of a calcium phosphate glass powders with a composition of 60CaO · 30P2O5 · 5TiO2 · 5Na2O (in mol%) were heated for 3-6 h at 850 °C in air. The compacts were densified by the viscous flow of the glassy phases during heating. The calcium phosphate glass-ceramics were found to show a bending strength of approximately 100 MPa, and they were easy to machine, as confirmed by a drilling test using a conventional carbide tool. The machinability is thought to arise from the microstructure consisting predominantly of the interlocking and platelike β-Ca2P2O7 precipitated in the glass.
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U2 - 10.1557/JMR.2001.0107
DO - 10.1557/JMR.2001.0107
M3 - Article
AN - SCOPUS:0035295289
VL - 16
SP - 876
EP - 880
JO - Journal of Materials Research
JF - Journal of Materials Research
SN - 0884-2914
IS - 3
ER -