Method of bonding at least two types of ceramic materials to eac

Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board

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156 89, 156322, 1562733, 219 7616, 264 60, 264 84, 264332, B05D 110, B05D 302

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active

043305687

ABSTRACT:
A method of bonding at least two types of refractory ceramic materials, a first material being, for example, fireclay and a second material being, for example, alumina, to each other in order to enhance both the abrasion and corrosion resistances of heat resistant plates for valve closures of foundry ladles. The second, thermally more resistive material, which is applied to the first material in the form of relatively small particles, is preheated on at least the outer surface layers of the particles, the entire volume of the particles usually being preheated or even molten. The bonding of the two preheated materials occurs in such a way that minute particles up to drops of the second, thermally more resistive material are thrown at high speed (with high kinetic energy) onto the preheated surface of the first material. The source of such a relatively high kinetic energy can be constituted by either an explosion or a plasma beam ejected at a high outlet velocity out of the mouth of a plasma torch.

REFERENCES:
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patent: 3493415 (1970-02-01), Grisaffe et al.
patent: 3719550 (1973-03-01), Arendt
patent: 3851140 (1974-11-01), Coucher
patent: 3959567 (1976-05-01), Bradley
patent: 3998682 (1976-12-01), Harmsen
patent: 4048348 (1977-09-01), Bailey et al.
patent: 4159353 (1979-06-01), Adelsberg

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