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DIAMOND POLYCRYSTAL AND TOOL PROVIDED WITH SAME
In a diamond polycrystal, a value of a ratio (a'/a) of a' to a is less than or equal to 0.99 in a Knoop hardness test performed under a condition defined in JIS Z 2251:2009, where the a represents a length of a longer diagonal line of a first Knoop indentation formed in a surface of the diamond polycrystal when a Knoop indenter with a test load of 4.9 N is pressed onto the surface of the diamond polycrystal, and the a' represents a length of a longer diagonal line of a second Knoop indentation remaining in the surface of the diamond polycrystal after releasing the test load.
DIAMOND POLYCRYSTAL AND TOOL PROVIDED WITH SAME
In a diamond polycrystal, a value of a ratio (a'/a) of a' to a is less than or equal to 0.99 in a Knoop hardness test performed under a condition defined in JIS Z 2251:2009, where the a represents a length of a longer diagonal line of a first Knoop indentation formed in a surface of the diamond polycrystal when a Knoop indenter with a test load of 4.9 N is pressed onto the surface of the diamond polycrystal, and the a' represents a length of a longer diagonal line of a second Knoop indentation remaining in the surface of the diamond polycrystal after releasing the test load.
DIAMOND POLYCRYSTAL AND TOOL PROVIDED WITH SAME
DIAMANTPOLYKRISTALL UND DAMIT AUSGESTATTETES WERKZEUG
POLYCRISTAL DE DIAMANT ET OUTIL COMPRENANT CELUI-CI
SUMIYA HITOSHI (author) / YAMAMOTO KATSUKO (author)
2022-02-23
Patent
Electronic Resource
English
DIAMOND POLYCRYSTAL BODY, AND TOOL PROVIDED WITH DIAMOND POLYCRYSTAL BODY
| European Patent Office | 2024
| European Patent Office | 2022
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