High Temperature Coating Masking Materials

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Dry Powder High Temperature Coating Masking Materials

M-1 Maskant

A base-metal powder mask used dry or as an undercoating for other materials in the System. When used as a slurry mask it is combined with B-4, B-100, or B-200 binders, and then top coated with M-7. M-1 is basically inert to superalloy base metals. Its function is to act as a “getter” for diffusion coating metals such as aluminum, thereby preventing coating on surfaces where coating is not desired/permitted. After thermal processing, the M-1 becomes a soft powder, under the hard M-7 “sheath” and after “cracking open” this sheath is readily removed from the surface by an air blast. No grit blasting or wire brushing is required.

M-5 Maskant

M-5 Maskant powder is designed to protect selected areas of nickel and iron based alloys/superalloys during chromium diffusion coating.

M-7 Maskant

An overcoating powder which when combined with the APV Binder provides a top coating to the M-1. M-7 forms a tight “envelope” over the M-1. After processing, the envelope is hard and retains both the M-1 and itself intact, thereby avoiding contamination of the coating pack or mix coating source material during removal. The M-7 envelope is easily “cracked” open by striking with a wooden, plastic, or rubber implement. The easily removable, soft M-1 is readily evident under the M-7. M-7 Green is available where color is required by the user to make it distinguishable from the part to be coated.

M-10 Maskant

M-10 is the same material as M-1 but with a finer particle size. Use of this maskant has been shown to give a sharper demarcation between the coating and masked surface.

M-17 Maskant

A masking powder combining M-1 and M-7 which when used in slurry form does not necessarily require separate coats of M-1 and M-7. Dry Powder High Temperature Coating Masking Materials

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APV Maskants Brochure

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