Plastic and nonmetallic article shaping or treating: processes – Including step of generating heat by friction
Patent
1990-01-08
1993-01-19
Lowe, James
Plastic and nonmetallic article shaping or treating: processes
Including step of generating heat by friction
264 66, 264110, 264125, C04B 3571, B28D 132
Patent
active
051805324
ABSTRACT:
Mica-containing ceramic composite having excellent characteristics such as capability of machining work, a small thermal expansion coefficient, high heat-shock resistant temperature difference as well as high heat deformation temperature, is prepared by: a) preparing powder mixture by blending 20 to 50% by weight of mica powder, 15 to 40% by weight of zinc oxide powder, 10 to 20% by weight of silica powder, 8 to 20% by weight of boric acid powder, and 4 to 20% by weight of cordierite powder; b) heating the powder mixture at a temperature of from 940.degree. C. to 1,050.degree. C. to prepare baked product; c) pulverizing the baked product into very fine powder to thereby obtain a shaping material; d) adding an organic binder to the shaping material to prepare a shaping composition; and e) shaping the shaping composition into a shaped body and heating a shaped body at a temperature ranging from 940.degree. C. to 1,050.degree. C. with simultaneous application of pressure to the shaped body to render the same into a baked body.
REFERENCES:
Weber et al. Advanced Ceramic Materials vol. 2, No. 3B (1987).
Industrial Ceramics (Faenza Italy), p. 46, Mar. 1987.
Materials Handbook Brady et al., (1986).
Manufacturing Engineering, Mar. 1976, pp. 26-28, R. N Stauffer, "Now: A Glass-Ceramic That's Machinable".
Nikkei New Materials, Feb. 24, 1986, pp. 40-49, T. Sugano, "Competitable Free Cutting Ceramics".
Mitsubishi Electric Advance, Jun. 1989, pp. 25-28, T. Murakami, et al., "Mio Ceram, a Machinable Ceramic".
Kato Kazuharu
Murakami Tadaki
Shirazawa Takashi
Fiorilla Christopher A.
Lowe James
Mitsubishi Denki & Kabushiki Kaisha
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