Search Results for thermal spray coatings

This article describes a new document on methods to test the bond strength of thermal spray coatings that was developed and released by the ASM Thermal Spray Society Accepted Practices Committee on Metallography. This practice clarifies details of ASTM C633 requirements and provides examples of best practices confirmed by hundreds of tests performed wordwide

This article describes work being done at the University of Limoges to develop thermal spray coatings for use in new nuclear power plant designs.

This article describes a multistation high-volume production cell in which molybdenum coatings are applied to automotive transmission components by wire flame spraying using a combination of acetylene, oxygen, and air.

Recent advances in thermal spray techniques enable thermal spray aluminum coatings to reliably protect offshore oil and gas platform structures. This article presents a case study of preparing thermal spray aluminum coatings to protect steel structures in the splash zone. Testing and industry experience in marine environments indicate that aluminum coatings are a long-term solution for protection of hot risers in submerged, splash zone, and atmospheric service environments.

Thermal spray technology is increasingly being used in alternative energy applications such as solid-oxide fuel cells, solar panels, and wind and hydropower turbines.

This article describes the development and evaluation of a novel atmospheric plasma spray torch designed to overcome limitations in coating internal diameter surfaces. A case study demonstrates the torch's effectiveness in producing high-quality thermal barrier coatings (TBCs) for turbine components, applying NiCoCrAlY+HfSi bond coats and 8 wt% YSZ topcoats with appropriate porosity levels. Analysis results confirm that this torch delivers comparable performance to conventional torches while enabling the critical capability of operating in confined geometries, addressing a significant gap in thermal spray applications for gas turbine engine components subjected to extreme operating conditions.

The absence of standards and a common vocabulary are an obstacle when it comes to evaluating the structure of thermal spray coatings. However, proper sectioning and mounting of metallographic specimens helps ensure that the images obtained accurately reflect the coating structure and the information that can be derived from it.

A multicomponent thermal spray coating system resists pick-up of contaminants that can cause flaws on heat treated strip surface.

Recent advances in thermal spray techniques enable thermal spray aluminum coatings to reliably protect offshore structures in splash zones.

Identifying metallographic TSC artifacts, specifically in air plasma spray zirconia-based thermal barrier coatings.

New thermal and cold spray technologies are being developed to extend the lifespan of thermal barrier coating (TBC) systems at elevated temperatures. This article describes the relevant attributes of coating technologies such as high velocity air fuel, high velocity air plasma spray, and high pressure cold spray for use in TBC systems.

The use of coatings to enhance the performance of components is one of the most powerful tools in materials engineering. This article highlights some examples of how thermal spray technologies are used to enhance surface properties for selected applications and industries.

Recent advances in high velocity oxygen fuel torches in the form of miniaturization, joining, automation, and digitization are increasing the application opportunities for this thermal spray coating technology.

This article provides a brief overview of the applications of multimodal alumina-titania (n-AT) coatings stemming from a five-year program on thermal spray nanocoatings sponsored by the U.S. Office of Naval Research (ONR). In the main example, plasma sprayed n-AT coatings are applied to the propulsion shafts of Mine Countermeasure ships, bringing a fourfold increase in service life.

Thermal spray plays an important but latent role in many energy generation applications. Strong R&D commitment is required to further expand its technological envelope. This article addresses future directions in the use of thermal spray coating technologies in the energy sector.

Thermal spray coatings are widely used to keep power plants running at full capacity. An example is the application of HVOF-sprayed CrC-NiCr to protect generating and superheater banks from sulfuric and vanadium gases. Other examples include the use of arc spraying to deposit high Cr content Ni alloy to extend the life of coal-fired boiler tubes and to apply amorphous work hardening coatings to surfaces in the flu gas path that are susceptible to high-temperature corrosion and wear.

For those who are active within the thermal spray industry, 2017 offered a dramatic mix of jubilation and concern over conditions within the global thermal spray market. This article briefly reviews some of the market factors influencing the industry in 2017 and future outlook.

This article reviews the current state of thermal spray nanocomposite coating technology and assesses commercially available feedstock materials as well as those in development.

Kinetic metallization offers certain advantages over hard chrome and high-velocity oxyfuel thermal spray coatings, especially when elevated process temperatures would degrade the coating or part.

This article provides a brief review of thermal spray technology along with examples of where and how it used in steelmaking equipment and operations.