Accession Number:

AD0808523

Title:

DEVELOPMENT OF COATINGS FOR PROTECTION OF DISPERSION STRENGTHENED NICKEL FROM OXIDATION. PART III. DEVELOPMENT OF DIFFUSION BONDED CERAMIC COATINGS.

Descriptive Note:

Final summary rept. 1 Feb-31 Dec 65,

Corporate Author:

DU PONT DE NEMOURS (E I) AND CO WILMINGTON DE PIGMENTS DEPT

Personal Author(s):

Report Date:

1966-03-01

Pagination or Media Count:

70.0

Abstract:

The Amicon nonmetallic coating system previously developed for use on chromium-rich alloys was investigated for use on TD-Nickel in the 2200 to 2400 F. range. Major advances were made during the program. A simple air oxidation pretreatment of the base alloy resulted in excellent coating adhesion without special chromium precoating. A new family of coatings from talc, BaCrO4 and B2O3 were developed which gave major performance advantages over previous coatings. Further additions of forsterite increased coating oxidation resistance still further. The program resulted in a new coating for TD-Nickel which can be spray applied and fired in air to give a thin, tough and abrasion resistant coating providing at least an order-of-magnitude reduction in oxidation at temperatures up to 2300 F. Author

Subject Categories:

  • Polymer Chemistry
  • Properties of Metals and Alloys
  • Fabrication Metallurgy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE