Method for producing uniform cylindrical tubes of CVD diamond

Details Method for producing uniform cylindrical tubes of CVD diamond Method for producing uniform cylindrical tubes of CVD diamond

1993-10-19

1995-02-07

Nold, Charles R.

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Hollow or container type article

428212, 428220, 428338, 428367, 428408, 4289088, 423446, 407119, 125 39, 51293, 761071, 72462, B28D 504

Patent

active

053874471

ABSTRACT:
The present invention provides a method for forming uniform CVD diamond coatings on a substrate wherein diamond is deposited on a plurality of substrates which are rotated in unison during the coating process to provide for more uniform radial growth. An advantageous substrate is a wire which can be coated with a layer of CVD diamond for making components in water-jet cutting apparatus, wire-drawing dies, or other tubular articles when the wire is separated from the resulting diamond tube. Identical tubes with higher uniformity in wall thickness are among the products which can be obtained. In addition, tubes having a uniform particle size distribution along their wall thickness which supports columnar diamond growth are also provided.

REFERENCES:
patent: 4707384 (1987-11-01), Schachner et al.
patent: 5130111 (1992-07-01), Pryor
patent: 5133332 (1992-07-01), Tanaka et al.
Emerging Technology of Diamond Thin Films/Chemical & Engineering News, Vo. 67, NI. 20, pp. 24-39, 1989.

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