Method of applying an oxide coating onto a non-porous refractory substrate

• US 3,081,200 A
• Filed: 04/10/1959
• Issued: 03/12/1963
• Est. Priority Date: 04/10/1959
• Status: Expired due to Term

• Current Assignee: Edwin H. Tompkins
• Original Assignee: Edwin H. Tompkins
• Inventors: Tompkins, Edwin H.
• Application Number:
  US03/805,382
• Time in Patent Office: 1,432 Days
• US Class Current: 427/126.3
• CPC Class Codes: C03C 17/25 by deposition from the liquid phase
• CPC Class Codes: C03C 2217/229 Non-specific enumeration
• CPC Class Codes: C03C 2217/23 Mixtures
• CPC Class Codes: C03C 2218/112 by spraying
• CPC Class Codes: C04B 35/00 Shaped ceramic products characterised by their composition porous ceramic products C04B38/00; ceramic articles characterised by particular shape, see the relevant classes, e.g. linings for casting ladles, tundishes, cups or the like B22D41/02; ceramic substrates for microelectronic semi-conductors H01L23/15; Ceramics compositions containing free metal bonded to carbides, diamond, oxides, borides, nitrides, silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides or sulfides other than as macroscopic reinforcing agents C22C; shaping of ceramics B28B; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products chemical preparation of powders of inorganic compounds C01; infiltration of sintered ceramic preforms with molten metal C04B41/51
• CPC Class Codes: C04B 41/009 characterised by the material treated
• CPC Class Codes: C04B 41/4505 characterised by the method of application
• CPC Class Codes: C04B 41/5025 with ceramic materials copper oxide or solid solutions thereof C04B41/5074
• CPC Class Codes: C04B 41/87 Ceramics
• CPC Class Codes: H01B 1/00 Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
• CPC Class Codes: H01F 41/22 Heat treatment; Thermal decomposition; Chemical vapour deposition

Claims

1. THE METHOD OF FORMING ADHERENT METAL OXIDE FILMS ON NON-POROUS REFRACTORY SUBSTRATES WHICH COMPRISES THE STEPS OF;

PREPAPRING A SOLUTION CONSISTING OF AN ORGANIC SOLVENT AND AT LEAST A PLURALITY OF DIFFERENT METAL ACETYLACETONES WHEREIN THE METALS ARE SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, MANGANESE, IRON, COBALT, NICKEL, COPPER AND ZNC;

HEATING THE SUBSTRATE TO A TEMPERATURE GREATER THAN ABOUT 500* C. BUT LESS THAN THE MELTING AND SUBLIMATION TEMPERATURES OF THE SUBSTRATE TO A TEMPERATURE THE METALS, WHICHEVER OCCURS FIRST;

ATOMIZING THE SOLUTION;

AND DIRECTING THE ATOMIZED SOLUTION AGAINST THE HEATED SUBSTRATE IN AIR SO LONG AS THE SUBSTRATE SURFACE REMAINS HOTTER THAN A TEMPERATURE GREATER THAN ABOUT 500* C. TO YIELD A SPINEL STRUCTURE ON THE SUBSTRATE SURFACE WHICH CONTAINS ONLY OXIDES OF THE METAL ACETYLACETONES, AND REPEATING THE LAST MENTIONED STEP AS MANY TIMES AS NECESSARY TO ATTAIN A FILM CORRESPONDING TO A PREDETERMINED THICKNESS.