Search Results for abradable coatings

Clearance-control coatings play a major role in gas turbine engines by minimizing the air gap between rotating blade tips and engine casings. An improvement of just 125 µm can reduce fuel consumption by 0.5%. This article discusses the potential impact of new materials being considered for blade tip coating systems, including NiCoCrAlY bond coats and matrix layers with Hf, Re, or Si additions for better oxidation and creep resistance, embedded angular CBN particles for enhanced incursion of abradable shroud coatings, and double or Pt aluminide topcoats for extended oxidation protection.

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.

This article explains how coating technology originally developed for use in nuclear power generating equipment is helping automotive engineers solve heat, wear, and performance challenges using new materials and design approaches.

News about ASM members, chapters, events, awards, conferences, affiliates, and other society activities. Topics include: ASM Board appoints committee and council chairs; ASM appoints Carrie Wilson as Interim Managing Director; Nagpur Chapter welcomes Navin Manjooran; Los Alamos Delves into Oppenheimer; professional profile for Ainsley Pinkowitz; 2023 DomesDay winners; In memoriam for Rodney R. Boyer.

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 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

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

Outdoor enclosures for telecom equipment are often made from aluminum, but with the protective treatments described in this two-part article series, inexpensive steels can serve in the same capacity. Zinc-based galvanizing and aluminizing treatments, which were presented in Part 1, may be used alone or together with corrosion-resistant paints, pretreatments, and sealants described here. This article also assesses the corrosion resistance and adhesion properties of different combinations of steels, coatings, and pretreatments by means of salt fog spray testing.

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.

Improving the mechanical properties and wear resistance of polymers used as implant bearing materials requires new approaches and modern technology. This article describes recent work on translating novel materials and coatings into clinical practice to reduce risks and significantly improve orthopedic implant fixation and longevity.

This article evaluates the sliding wear behavior of fiber-reinforced 7075 Al alloy composites. It explains how the composite samples were made and shows how different fiber materials, volume percentages, and orientations affect hardness and wear resistance. It also interprets wear test results and what they reveal about wear mechanisms in metal-matrix composites.

News about ASM members, chapters, events, awards, conferences, affiliates, and other society activities. Topics include: ASM announces 2024 award program recipients including Henry Clay Frick Birthplace as an ASM Historical Landmark; Alpha Sigma Mu lecturer announced; student board members announced; professional profile for Priyanka Adapala; Kanpur hosts Materials Camp; In memoriam for Todd Leonhardt.