Leonard S Joesten

US Patent:

56835221, Nov 4, 1997

Filed:

Mar 30, 1995

Appl. No.:

8/413553

Inventors:

Leonard S. Joesten - Rockford IL

Assignee:

Sundstrand Corporation - Rockford IL

International Classification:

C23C 2222

US Classification:

148253

Abstract:

This invention relates to a non-electrolytic process for applying a paint adherent and corrosion resistant coating of magnesium phosphate and magnesium fluoride to a product formed from a magnesium alloy. The process includes immersing the magnesium alloy product in a solution having phosphate and fluoride ions. The process may further include controlling a pH level of the solution, providing the solution in which the magnesium alloy product is immersed with a concentration by weight of sodium bifluoride, and controlling the solution at a certain temperature, while the magnesium alloy product is immersed for a determined period of time.

US Patent:

56142625, Mar 25, 1997

Filed:

May 2, 1994

Appl. No.:

8/236619

Inventors:

Leonard S. Joesten - Rockford IL

Assignee:

Sundstrand Corporation - Rockford IL

International Classification:

B05D 306

US Classification:

427318

Abstract:

This invention relates to a method of sealing resin to an alloy casting using either an aromatic solvent or an aqueous-based solution. The method includes providing a resin and combining the aromatic solvent with the resin to form a sealing coating which has a predetermined concentration by volume of resin to sealing coating. The method continues by heating the alloy casting to a first predetermined temperature and then selectively applying the sealing coating to the heated alloy casting. Finally the heated alloy casting is baked at a second predetermined temperature for a predetermined time period. Variations of this process using an aqueous-based solution include providing an aqueous-emulsified resin, and then combining the aqueous-emulsified resin with at least one base solvent to form a final aqueous-based solution which has a predetermined concentration by volume of base solvent to final aqueous-based solution. The process allows for the selection of differing materials to be combined.