Process of plating by pyrolytic deposition
Abstract
Abstract THERMAL DECOMPOSITION OR PYROLYSIS OF ANY KNOWN PRECURSOR COMPOUND TO DEPOSIT A PLANTING OR ADHERENT COATING OF A SOLID PRODUCT OF THE DECOMPOSITION UPON A SOLID SUBSTRATE IS ACCOMPLISHED BY FORCIBLY PROJECTING, E.G. BY PRESSURE ATOMIZATION, AGAINST THE SUBSTRATE HEATED TO THE DECOMPOSITION TEMPERATURE OF THE PRECURSOR COMPOUND, FINELY-DIVIDED PARTICLES OF A LIQUID CONTAINING THE PRECURSOR COMPOUND HAVING A PARTICLE SIZE WITHIN THE RANGE OF ABOUT 1-1000 MICRONS, WHILE THE SUBSTRATE IS MAINTAINED IN A VACUUM OR CONTINUOUS GASEOUS PHASE COMPATIBLE WITH THE SYSTEM. THE PRECURSOR COMPOUND CAN BE DISSOLVED IN AN APPROPRIATE SOLVENT OR, IF LIQUID AT THE TREATMENT CONDITIONS, CAN BE PROJECTED DIRECTLY. THE SUBSTRATE IS PREFERABLY HEATED BY INDUCTION. PREFERRED PRECURSORS ARE ORGANOMETALLIC COMPOUNDS OF METALS HAVING AN ATOMIC NUMBER FROM 4-83 WHICH LIBERATE THE FREE METAL ON DECOMPOSITION BY HEATING. D R A W I N G
Inventors
- 👤 James C Withers
Bibliographic Details
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