Machinable calcium pyrophosphate glass-ceramics
2001 ◽
Vol 16
(3)
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pp. 876-880
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Keyword(s):
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.
2018 ◽
Vol 488
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pp. 24-35
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Keyword(s):
2000 ◽
Vol 192-195
◽
pp. 223-226
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2014 ◽
Vol 20
(1)
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pp. 135-140
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Keyword(s):
1986 ◽
Vol 69
(2)
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pp. C-31-C-32
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2006 ◽
Vol 67
(7)
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pp. C-142-C-144
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2003 ◽
Vol 254-256
◽
pp. 753-756
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2003 ◽
Vol 426-432
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pp. 3183-3188
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