Diamond coated article and process for producing thereof

Details Diamond coated article and process for producing thereof Diamond coated article and process for producing thereof

1996-07-05

1998-12-22

Turner, A. A.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428216, 428332, 428408, 428336, 51295, 51307, 51309, 423446, C23C 1626

Patent

active

058516581

ABSTRACT:
A diamond coated article is disclosed which consists essentially of a substrate and a plurality of polycrystalline diamond film layers accumulatively coated thereon in a total thickness of at least 20 .mu.m, wherein each of the polycrystalline diamond film layers (i) has a thickness of 6 to 13 .mu.m, (ii) has an average crystallite size in the surface direction thereof of 3 to 7 .mu.m, (iii) has (111) oriented diamond crystallites exposed on the surface thereof, and (iv) satisfies the relationship: I(N)I(D)<0.2, wherein I(D) represents an intensity of diamond Raman peak in counts/sec appearing around 1333 cm.sup.-1 and I(N) represents a maximum intensity among non-diamond Raman peaks appearing between 1200 cm.sup.-1 and 1600 cm.sup.-1.

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Shi et al., "Growth of a Well-Adhering Diamond Coating on Sintered Tungsten" Diamond and Related Materials 4 (1995) pp. 1079-1087.
Japan New Diamond Forum, 1989.1, vol. 5, No. 15 (1989).

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