Accession Number:

ADA172278

Title:

Plasma Polymer Coatings to Prevent Pipeline Corrosion and Reduce Friction.

Descriptive Note:

Corporate Author:

POLAR MATERIALS INC MARTIN'S CREEK PA

Personal Author(s):

• Walpert, George W.

Report Date:

1986-05-21

Pagination or Media Count:

89.0

Abstract:

Three different materials, thiophene, hexamethyldisiloxane, and hexamethyldisilazane were deposited on mild steel coupons by low temperature radio-frequency plasma polymerization. Statistically designed experiment matrices were utilized to screen a range of operating conditions and optimize coating properties. For two of the materials, a narrower range of conditions was used to produce coating weights of about 400 micrograms per square centimeters, and these coatings were evaluated for corrosion protection and coating physical properties. Coatings were produced which yielded 256 hours in air-bubbled salt water to 95 corrosion. Uncoated coupons in the same test rusted to 95 in six hours. The best coating was deposited at a rate of 4 micrograms per square centimeter per minute, but reasonably good coatings were produced at coating rates of 20 to 30 micrograms per square centimeter per minute. The feasibility of corrosion protection coatings using low temperature plasma polymerization has been established by this project, but much process and product development remains for commercialization. Recommendations for continued development work are discussed in this report. Keywords Ceramic materials Pipelines Diagnostic tests real time process control methods.

Descriptors:

• *CORROSION INHIBITION
• *POLYMERIC FILMS
• *PLASMA SPRAYING
• *BARRIER COATINGS
• TEST AND EVALUATION
• CONTROL
• LOW TEMPERATURE
• PHYSICAL PROPERTIES
• CERAMIC COATINGS
• STEEL
• SILOXANES
• CERAMIC MATERIALS
• COATINGS
• DEPOSITION
• WEIGHT
• PROTECTIVE COATINGS
• DIAGNOSIS(GENERAL)
• FRICTION
• PLASTIC COATINGS
• ORGANIC COATINGS

Subject Categories:

• Coatings, Colorants and Finishes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE