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Abstract

The feasibility of machining TiN/Si₃ N₄ composites by a micro-EDM method has been explored. Samples of composites containing two different sizes of TiN particles were prepared by hot pressing and the resulting materials characterised in terms of microstructure, strength, fracture toughness, and electrical resistivity. A low electrical resistivity of 1·25 × 10^-3Ω cm^-1 was obtained in a 40 vol.-% composition. Micropores of 700 μm depth and 70 μm dia. were successfully machined into TiN/Si₃ N₄ composites by the micro-EDM method. The results demonstrated the possibility of machining engineering ceramics by the micro-EDM method through the incorporation of conducting toughening phases. The size and content of TiN particles were found to have substantial effects on the strength, toughness, and electrical resistivity of the composites.

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References

HIRDA

, NAGAOKA

, BRITO

M. E.

, and KANZAKI

: J. Am. Ceram. Soc., 1994, 77, (7), 1857–1862.

HUANG

J. L.

and CHOU

H. L.

: Ceram. Int., 1994, (20), 49–55.

RICE

R. W.

, GRACE

W. R.

, and CONN

CO.

: Ceram. Eng. Sci. Proc., 1990, 11, (7–8), 667–694.

HUANG

J. L.

, KUO

B. F. J.

, and CHEN

S. Y.

: Mater. Sci. Eng., 1994, A174, 157–164.

LUNDBERG

, KAHLMAN

, POMPE

, and CARLSSON

: Am. Ceram. Soc. Bull., 1987, 66, (2), 330–333.

YASUTOMI

and SOBUE

: Ceram. Eng. Sci. Proc., 1990, 11, (7-8), 857–867.

HERRMANN

, BALZER

, SCHUBERT

CHR.

, and HERMEL

: J. Eur. Ceram. Soc., 1993, 12, 287–296.

TAYA

, HAYASHI

, KOBAYASHI

, and YOON

H. S.

: J. Am. Ceram. Soc., 1990, 73, (5), 1382–1391.

BELLOSI

, GUICCIARDI

, and TAMPIERE

J. Eur. Ceram. Soc., 1992, (9), 83–93.

10.

MARTIN

, CALES

, VIVIER

, and MATHIEU

: Mater. Sci. Eng., 1989, A109, 351–356.

11.

MORDECAI

N. L.

and HUDDLESTON

: Br. Ceram. Trans., 1995, 94, (4), 161–164.

12.

MORDECAI

N. L.

, LEE

T. C.

, and HUDDLESTON

: Br. Ceram. Trans., 1995, 94, (1), 21–24.

13.

HUANG

J. L.

, LEE

M. T.

, LU

H. H.

, and LII

D. F.

: Mater. Chem. Phys., 1996, 45, 203–210.

14.

SHEW

B. Y.

and HUANG

J. L.

: Mater. Sci. Eng., 1992, A159, 127–133.

15.

RICE

R. W.

: Ceram. Eng. Sci. Proc., 1981, 2, (7-8), 661–701.

16.

HUANG

J. L.

and CHOU

H. L.

: J. Am. Ceram. Soc., 1994, 77, (3), 705–710.

17.

HONG

, LUMBY

R. J.

, and LEWIS

M. H.

: J. Eur. Ceram. Soc., 1993, 11, 237–239.

18.

EVANS

A. G.

and CHARLES

E. A.

: J. Am. Ceram. Soc., 1976, 59, (7-8), 371–372.

19.

MASUZAWA

, FUJINO

, and KOBAYASHI

: Ann. CIRP, 1985, (34), 431–436.

20.

PETROFES

N. F.

and GADALLA

A. M.

: Am. Ceram. Soc. Bull., 1988, 67, (6), 1048–1052.

21.

AKIMUNE

, MUNAKATA

, ANDO

, OKAMOTO

, and HIRO-SAKE

J. Jpn Ceram. Soc. Int. Ed., 1997, (105), 129–133.

22.

BULJAN

S. T.

, BALDONI

J. G.

, and HUCKABEE

M. L.

: Am. Ceram. Soc. Bull., 1987, 66, (2), 347–352.

23.

EKSTRÖM

: J. Eur. Ceram. Soc., 1994, 13, 551–559.

24.

NAGAOKA

, YASUOKA

, HIRAO

, and KANZAKI

: J. Ceram. Soc. Jpn, 1992, 100, 617–620.

25.

SCHEPPOKAT

, CLAUSSEN

, and HANINK

: J. Eur. Ceram. Soc., 1996, 16, 919–927.

Micro-electrode discharge machining of TiN/Si 3 N 4 composites

Abstract

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