Optimization of thermal spray parameters for cathodic protection of reinforcement in concrete

Book · Sun Oct 01 04:00:00 EDT 1995

OSTI ID:106053

Berndt, C C; Reddy, S ^[1]; Allan, M L ^[2]

---

1. State Univ. of New York, Stony Brook, NY (United States). Thermal Spray Lab.
2. Brookhaven National Lab., Upton, NY (United States). Dept. of Applied Science

Thermal spraying of zinc as an anode material is an effective means of providing cathodic protection to reinforced concrete. An empirical modeling technique was used to optimize the properties of the zinc coating and make the thermal spray parameterization efficient. The two properties optimized in this study were tensile adhesion strength of the coating, which gives a measure of durability; and deposition efficiency, which is a measure of the process efficiency and, therefore, the process economics. A novel single wire arc plasma system was used to apply the zinc coatings. The parameters varied were (1) torch to substrate distance, (2) cooling gas pressure and (3) arc current. The results of the modeling indicate that the torch to substrate distance and gas pressure exert greater control over tensile adhesion strength and deposition efficiency than arc current.

• OSTI ID: 106053
• Report Number(s): CONF-950304--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADHESION
CATHODIC PROTECTION
EXPERIMENTAL DATA
PLASMA ARC SPRAYING
PROTECTIVE COATINGS
REINFORCED CONCRETE
TENSILE PROPERTIES
ZINC