Accession Number:

ADD002929

Title:

Process for Producing Stabilized Anatase Titanium Dioxide Surfaces for Durable Adhesive Bonding.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s):

• Hamilton,Willard C.
• Wegman,Raymond F.

Report Date:

1975-12-23

Pagination or Media Count:

4.0

Abstract:

The conventional phosphate-fluoride process for treating titanium parts to produce anatase titanium dioxide surfaces for adhesive bonding, which includes 1 an acid pickling bath step, 2 a phosphate-fluoride bath step, and 3 a warm bath step, is modified by adding about 2, by weight, of an alkali metal sulfate, such as a neutral sulfate of sodium or lithium to the bath in any of steps 1, 2 and 3 to stabilize the anatase surface and thereby prevent transformation thereof to the undesirable rutile structure.

Descriptors:

• *Titanium
• *Surface finishing
• *Patents
• Titanium oxides
• Adhesive bonding
• Phosphates
• Fluorides
• Pickling
• Crystal structure
• Sodium sulfates
• Alkali metal compounds
• Sulfates
• Lithium compounds

Subject Categories:

• Coatings, Colorants and Finishes
• Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE