Search Results for tungsten carbide powder

An investigation into the chemistry and type of tungsten carbide powder used for drill bits has yielded a material with improved transverse rupture strength and interesting microstructural response to thermal cycling.

Conventional manufacturing from wrought bar stock typically involves extensive machining, creates significant material waste (scrap metal), and requires numerous steps to obtain the final part geometry. As a more efficient alternative, powder metallurgical (PM) processes are now available to cost effectively fabricate both simple and complex shapes with minimal material waste. Combustion driven higher pressure powder compaction (CDC) for near-net or net shape manufacturing was recently developed. It offers a unique way of forming near-net or net shape high-density powder metal components both cost effectively and at relatively higher compaction pressures than other PM processes.

Enhanced mining tool performance is achieved through the use of reclaimed NiCrBSi-WC powders in laser metal deposition. Collection, analysis, and reuse of spilled powder lowers production costs and reduces environmental impact.

This article discusses the development of an economical and efficient thermal spray process for producing ultrasmooth hardface coatings for aerospace and power turbine applications. It also compares the surface morphology and roughness of commercial HVOF coatings with those deposited by advanced HVOF spraying.

Field assisted sintering technology (FAST) enables cost-effective manufacturing of metal, ceramic, and composite components with sub-micron grain microstructures and tailored properties.

Boriding is performed by diffusing boron atoms into a metal surface and allowing the boron to react with elements present in the substrate to form metal-boride compounds. Upon diffusing enough boron into the surface, a metal-boride compound layer with high hardness precipitates and grows below the surface of the part. This article discusses boriding of ferrous alloys, including a new deep case boriding method that produces wear layer depths comparable to competitive processes such as carburizing, nitriding, thermal spray coatings, and hardfacing.

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

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.

One of the greatest advances in modern metallurgy was the discovery of a steel that does not rust, which occurred after research into high chromium steels began. French researchers began adding chromium or nickel to heat treated alloy steels during the 1880s and 1890s, while German researchers began combining chromium with nickel in the 1890s. This article recounts the early history of stainless steel.

An ultrafast, efficient industrial-scale boriding process can drastically reduce costs, increase productivity, and improve the performance and reliability of a variety of machine parts. This article describes a novel, environmentally friendly technology that enables treating thousands of industrial components in one batch, without creating solid or liquid waste and gaseous emissions.

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.

News about ASM members, chapters, events, awards, conferences, affiliates, and other society activities. Topics include: ASM strategic plan progress report; volunteer profile for Tom Steigauf; professional profile for Beth Matlock.

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.

News about ASM members, chapters, events, awards, conferences, affiliates, and other society activities. Topics include: ASM and TMS Launch Energy Journal; Emerging Professionals; Profile of a Volunteer; Pioneering Metallurgist Zay Jeffries.