A summary of the efforts involved in organizing the 1998 thermal spray conference and proceedings. Also includes a publishing history for proceedings from previous events.

Listings of the organizing committees and proceedings editors for the International Thermal Spray Conference 2019.

Preface for the National Thermal Spray Conference 1996. Includes a publishing history for proceedings from previous thermal spray conference events.

Considering the number of concrete structures such as bridges, overpasses, trestles etc., their maintenance and repair form a significant part of the highway administration budget. Cathodic protection is becoming more popular because it helps reduce maintenance and renovation costs. Arc-sprayed zinc and zinc/aluminum alloy coatings are widely used in cathodic protection systems. The surface preparation of concrete is critical to the quality of coating and hence, the quality of the cathodic protection. Typically, sandblasting with surface brushing is used as preparation. This method has several technical, economic and ecological deficiencies: weather/humidity limitations, difficult removal of organic contaminants from the surface, an irrevocable loss of blasting media, high dust level, etc. An objective of this proceeding is to describe a plasma cleaning process as a successful alternative to sandblasting and to show the possibilities of combined plasma cleaning/coating process for the cathodic protection of reinforced concrete structures. This environmentally friendly process will result in better anodic coatings at lower cost and fewer concrete structure repairs.

Preface for the United Thermal Spray Conference 1997. Includes a publishing history for proceedings from previous thermal spray conference events.

Listings of the organizing committees and proceedings editors for the International Thermal Spray Conference 2023.

Listings of the organizing committees and proceedings editors for the International Thermal Spray Conference 2018.

Sintering ceramics have been widely used in industries which require electrical and mechanical properties. Thermal sprayed ceramics coatings are also applied for the industries, however the coating which has micron size pores are limited their applications due to inferior electrical and mechanical properties compared with sintering bulk. To expand thermal sprayed ceramics coating applications, dense coatings prepared by suspension plasma spraying are widely studied. Dense Al 2 O 3 coatings are applicable to fabricating equipment for electronics devices, such as ESC. There are no reports regarding electric properties of plasma sprayed dense Al 2 O 3 coating with different spray conditions. In this study to achieve a electric properties of dense Al 2 O 3 coating, spray parameters such as plasma power, gas flow rate and spray distance are investigated. Suspension materials prepared with three microns Al 2 O 3 powder are sprayed by high power suspension plasma spraying system. Spray conditions, plasma power, gas flow rate, and stand-off distance affect the coating density, crystal phase, and mechanical and electrical properties. Mechanism of coating formation by plasma spraying with fine powder suspensions will be discussed based on the findings. Al 2 O 3 coatings obtained by the plasma spraying is applied for application to application utilizing the electrical insulation properties of such electronics devise manufacturing equipment components is proceeding.

Importance of coating adhesion in a corrosive environment was studied experimentally. Tensile adhesion strength of HVOF sprayed 316L stainless steel and Hastelloy C coatings were tested in as-sprayed condition as well as after immersion in seawater. It was found that the adhesion strength of the stainless steel coatings degraded rapidly whereas that of the Hastelloy coatings remained almost intact. Specimens with an artificial defect were also immersed in seawater. The cross sectional observation after the test revealed that the corrosion at the coating-substrate interface proceeded much faster with the stainless steel coating as compared to the Ni-base alloy coating. A model experiment to simulate the galvanic corrosion of a coating-substrate couple was carried out and no significant difference in the galvanic current density was found between the two coatings when coupled with the steel substrate. The tightness of the coating-substrate interface was then tested with a fluorescent dye penetration test. The dye could penetrate the boundary between the stainless steel coating and the substrate whereas the boundary between the Ni-base alloy coating and the substrate was so tight that no penetration occurred. The size of the micro-gaps at the coating-substrate boundary was discussed from the viewpoint of classical Washburn-Ridiel theory. It was concluded that such micro-gaps between the coating and substrate must be eliminated for these barrier-type coatings to be used in corrosive environments. Heat treatment was highly effective for suppressing the preferential corrosion at the coating-substrate boundary.