Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of substrate or post-treatment of coated substrate
Patent
1995-08-31
1997-09-09
King, Roy V.
Coating processes
Direct application of electrical, magnetic, wave, or...
Pretreatment of substrate or post-treatment of coated substrate
427553, 427525, B05D 306
Patent
active
056654359
ABSTRACT:
An improved method for the fluorination of a diamond surfaces comprises condensing a layer of perfluorinated alkyl iodides consisting of C.sub.n F.sub.2n+1 I (where n is a positive integer from 1 to 13) on the diamond surface, producing perfluorinated alkyl free radicals by photodecomposing C--I bonds of said perfluorinated alkyl iodides on the diamond surface, reacting the diamond surface with photochemically produced perfluorinated alkyl radicals thereby anchoring photochemically induced photofragments of the perfluorinated alkyl iodides to the diamond surface forming a perfluorinated alkyl layer, and decomposing the perfluorinated alkyl layer on the diamond surface to cause the fluorination of the diamond surface by atomic F. The method achieves greater than one fluorine atom per surface carbon atom chemisorbed on the diamond using C.sub.4 F.sub.9 I.
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Smentkowski Vincent S.
Yates, Jr. John T.
King Roy V.
Meyers Diane R.
Silverman Arnold B.
University of Pittsburgh of the Commonwealth System of Higher Ed
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