Advanced Materials & Processes

NOV-DEC 2013

Covers developments in engineering materials selection, processing, fabrication, testing/characterization, materials engineering trends, and emerging technologies, industrial and consumer applications, as well as business and management trends

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i T S S e Advanced Processes and Applications for Thermal Spray T hermal spray is one of the most versatile thick film application technologies. It is possibly the only technique where such a wide variance in application methods, such as plasma, combustion, and electric arc exist and such a vast range of materialsÑmetals, alloys, ceramics, and cermetsÑcan be deposited. It is accepted in just about every industry, either as an integrated product or as a machinery-making product. Ongoing research enables new uses for thermal spray as well. For example, thermal plasmas are commonly used in thermal spray, however, non-equilibrium or cold plasmas are now being explored to deposit a thin film coating in the vapor phase in an atmospheric environment. Although spray diagnostics enable a basic understanding of these processes, advanced applications require a more sophisticated knowledge of equipment, materials, process control, and limits. In this issue, one article discusses a new wear-resistant coating for high temperature aerospace applications. A mainstay of thermal spray is wear-resistant coatings based TSS Announces on various carbides and oxides. These are New Board Members usually used where oil or other liquid film aids TSS President Luc Pouliot, in reducing friction. A multitude of higher temCOO, Tecnar Automation Ltd., perature sliding wear situations exist in land announced the following apand air propulsion systems where oil lubricapointments to the Board: Ann tion is impractical or difficult to achieve. To Bolcavage, FASM, Rollsaddress this topic, this article describes the Royce, Masahiro Fukumoto, development of a wear-resistant high velocity FASM, Toyohashi University oxygen fuel coating for oil-depleted applicaof Technology, and Dongming tions by incorporation of calcium and barium Bolcavage Zhu, NASA, were elected to a Pouliot fluorides into a chrome carbide nickel chrome second three-year term. base. The fluoride compounds provide a suitChristian Moreau, FASM, able substitute for oil lubrication in operation. Concordia University, was apYet another article is directed at the creation pointed vice president to fill the of functional surfaces using thermal spray as incomplete term of John O. viable replacements in co-fired screen-printed Hayden. Douglas G. Puerta, thick film applications. Most of these applicaIMR Test Labs, was reaptions can be found in electronics. Here the pointed for a one-year term as Fukumoto Zhu advantages of thermal spray are apparentÑ secretary/treasurer and Y.C. elimination of firing cycles and the ability to creLau, General Electric, was ate 3D rather than 2D components. Such ideas reappointed liaison to the board for a one-year term. Taylor K. are adaptable to the creation of Òsmart surBlair, Virginia Polytechnic InfacesÓ when incorporated as sensors. The austitute, and Katherine C. Flynn, thor points out that considerable research into Stony Brook University, were understanding the process-microstructurereappointed to a second oneproperties relationships need be made before year term as student board commercialization. Moreau Hayden members. The annual International Thermal Spray Conference (ITSC) is an important source of knowledge for those wishing to enhance their understanding of this technology and industry. The next conference takes place in Barcelona, Spain, May 21-23, 2014. Besides meeting and listening to experts, an exposition features vendors of the many different machines and materials used in this industry. We hope to see you Puerta Blair Flynn in Spain next year! EDITORIAL 2 Rajan Bamola iTSSe co-editor Surface Modification Systems Inc. 62 ADVANCED MATERIALS & PROCESSES • NOVEMBER-DECEMBER 2013

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