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AssigneeSumitomo Electric Industries, Ltd.
InventorsHitoshi Sumiya, Shuichi Satoh, Takeru Nakashima, Yasuyuki Kanada
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An improved diamond sintered body having an excellent breakage resistance, corrosion resistance, heat resistance and wear resistance and capable of being sintered at a relatively low pressure and low temperature can be provided. The feature thereof consists in a diamond sintered body comprising 50 to 99.9 volume % of diamond and the balance of a binder phase consisting of a single or mixed phase of a compound (C) or composite (C') of at least one element (A) selected from the group consisting of rare earth elements, Group 3B, 4A, 4B and 6B elements of Periodic Table, iron group, Mn, V, alkali metals and alkaline earth metals with a phosphorus compound (B), or of the above described compound (C) or composite (C') with an oxide of (A).
A sintered diamond body comprising 50 to 99.9 volume % of diamond and a balance of a binder phase consisting of a compound or composite of a phosphorus oxide and at least one element selected from the group consisting of rare earth elements, Group 3A, 3B, 4A, 4B, and 6B elements of the Periodic Table, iron group, Mn, V, alkali metals, alkaline earth metals and mixtures thereof, and, optionally, an oxide of at least one of said elements.
A diamond sintered body comprising 50 to 99.9 volume % of diamond and a balance of a binder phase predominantly consisting of a rare earth element and a phosphorus oxide.
A diamond sintered body comprising 50 to 99.9 volume % of diamond and a balance of a binder phase predominantly comprising a phosphorus oxide and carbonate compound.
A diamond sintered body comprising 0.1 to 30 volume % of a material consisting of a compound containing at least one Group 3A and/or 3B element of Periodic Table and phosphorus and a balance of diamond.
Abrasive grains obtained by pulverizing a sintered diamond body comprising 50 to 99.9 volume % of diamond and a balance of a binder phase consisting of a compound or composite of a phosphorus oxide and at least one element selected from the group consisting of rare earth elements, Group 3A, 3B, 4A, 4B, and 6B elements of the Periodic Table, iron group, Mn, V, alkali metals, alkaline earth metals and mixtures thereof, and, optionally, an oxide of at least one of said elements.
Abrasive grains obtained by pulverizing a diamond sintered body comprising 50 to 99.9 volume % of diamond and a balance of a binder phase predominantly consisting of a rare earth element and a phosphorus oxide.
Abrasive grains obtained by pulverizing a diamond sintered body comprising 50 to 99.9 volume % of diamond and a balance of a binder phase predominantly comprising a phosphorus oxide and carbonate compound.
Abrasive grains obtained by pulverizing a diamond sintered body comprising 0.1 to 30 volume % of a material consisting of a compound containing at least one Group 3A and/or 3B element of Periodic Table and phosphorus and a balance of diamond.
Dependencies are inferred from the claim text.