Page 32 - february

PROFESSIONAL ADVICE

ION-PLASMA TECHNOLOGY AND TECHNOLOGICAL
PLASMA DEVICES FOR APPLYING PROTECTIVE

COATINGS ON INNER WORKING SURFACES

In mechanical engineering, ion-plasma The article summarizes some of the results.
coatings are widely used as an alternative Before the development of technological
to galvanic coatings. This was a natural devices, workpieces with internal working
consequence of the development of new surfaces were classified by the type of structural
ion-plasma technologies and technological material (ferromagnetic -non-ferromagnetic)
equipment, which make it possible to effectively and by the geometric parameters of the
modify the properties of the working surfaces workpiece (the value of the inner diameter
of machine parts and processing tools and of the internal cavity; through-passage-no-
meet the standards of modern machine- passage internal cavity). The following basic
building production. The success of ion- requirements were imposed on the technologies
plasma technologies is based on the use of used, and therefore on the technological
energetic ionic treatment at all stages of the devices: the operating temperature of the
technological process, which ensures that the technological process should not exceed 300 -
specified physical, mechanical and operational 400 °C; the roughness of the coating should
properties of working surfaces are obtained. not exceed the roughness of the substrate.
The ion-plasma technologies and The technology of ion-plasma treatment must
technological devices developed to date include, and technological plasma devices
are focused mainly on the processing of must ensure the performance of two main
external working surfaces. The application technological functions: effective ion cleaning
of protective coatings on parts with internal of the inner working surface; Coating with ion
working surfaces is constrained by the lack bombardment ("ion assisted").
of specialized technological plasma devices Taking into account all the initial
and installations that provide processing of requirements, for coating the inner surfaces
internal surfaces with a diameter of 20 mm or were developed: sputtering devices of the
more at a ratio L / D ≥ 3. We have developed magnetron type - a cylindrical MRS (TsMRS),
technical solutions for the hardware support of a magnetron with a conical cathode (KMRS), a
the ion-plasma treatment of internal surfaces. cylindrical vacuum-arc evaporator.

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