Surface treatment of metals by shock-compressed plasma

Details Surface treatment of metals by shock-compressed plasma Surface treatment of metals by shock-compressed plasma

1995-08-01

1998-05-12

King, Roy V.

Coating processes

Direct application of electrical, magnetic, wave, or...

Pretreatment of substrate or post-treatment of coated substrate

427533, 148903, B05D 306

Patent

active

057502056

ABSTRACT:
A method for surface treating a metallic substrate to enhance its corrosion resistance. The method comprises the step of applying to the surface of the substrate a pulse treatment with a beam of dense high-temperature radiation generated by a coaxial plasma accelerator of the erosion type. The method provides for rapid heating of the surface region of the substrate to modify its metallurgical structure, without substantial heating of the underlying bulk thereof, followed by rapid cooling, whereby crystal nucleation and growth are suppressed and phase segregation and separation of substrate additives or compounds is avoided.

REFERENCES:
patent: 3615924 (1971-10-01), Swoboda et al.
Document Number IEEE 2755934 Jul.-Aug. 1985 USA/Soviet Union.
Tomashov et al, Zashch. Met., 24(3), pp. 395-400 (Russian) 1988, (Abstract only).
Baimbetov et al, Izv. Akad. Nauk Kaz. SSR, Ser. Fiz.-Mat.(2), 5-8 (Russian)1989 (Abstract only).

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