Wednesday, May 25, 2022

Archives

May 2022

The tribology of dental ceramics

Ceramics are widely used in dentistry due to their ability to mimic the optical characteristics of enamel and dentine, as well as their biocompatibility and durability. They include a wide array of materials. There are three main classes of dental ceramics: predominantly glassy materials, particle-filled glasses, and polycrystalline ceramics (See Figure 1). In general, the […]
Jeanna Van Rensselar

Enhanced thermal sensitivity in a single metal thermocouple

Single metal thermocouples (SMTs) have recently been developed with a new design concept of width-engineering of metal segments. In such designs, two segments of different micro-width are formed to obtain different levels of Seebeck effects. The variations in the Seebeck effect achieved from dissimilar segment width are small. In addition, the fabrication of such micro-width […]
Rafiq Mulla, Charles W. Dunnill

April 2022

Gas solutions for sustainable metal AM

Sustainability is a key value driver and focus for industrial manufacturing, and additive manufacturing fulfills that need in more ways than one. Additive manufacturing, a rapidly maturing industrial technology, has great potential to reduce the energy and resource requirements of current labor-intensive manufacturing processes through efficient and compact design, precision-fit materials, fewer manufacturing steps, reduced […]
Yushi Ono, Tomohiro Oyama, Ashok Mathur, Hirotaka Mangyo, Tadaharu Watanabe

Carbon-neutral insulation for high-temperature applications

In January 2022, Mantec Technical Ceramics, based in Stoke-on-Trent, U.K., launched carbon neutral versions of its super-insulative Ultralite material, and this has been met with early success in user industries. To the best of the company’s knowledge, this is the first example of a U.K.-precision ceramics/refractories manufacturer attaining such certification. Ultralite grades ULF 10, 12, […]
Stewart Saunders

March 2022

Sophisticated control systems for optimal process operations

A comprehensive control system, whether designing a new controls package or updating your existing system to a new controls scheme, is the most effective way to enhance any complex industrial manufacturing process — especially in more sensitive applications, such as coil coating or composite curing, where uniformity and precision are critical and when errors in […]
Tasha Jamaluddin

What pyrometer users need to know

Radiation thermometry, also known as infrared pyrometry, optical pyrometry, or simply pyrometry, is a non-contact temperature measurement technique that requires measurement of some portion of the thermal radiation given off by a hot object. The pyrometer, the measuring instrument, must look through some environment at the radiating target. There are several different types of pyrometer […]
Ralph A. Felice

The science of diffusion bonding or joining together dissimilar metals

Metal diffusion bonding is an essential joining method for achieving a high-purity interface when two similar metals require superior structural integrity. The process involves applying high temperature, and pressure to metals mated together in a hot press causes the atoms on solid metallic surfaces to intersperse and bond. There is probably no other commercially viable […]
Jeff Elliott

February 2022

Heat-transfer fluids: Growing in visibility and importance

The growing use of electronics in many applications is leading researchers to better understand the reasons for using heat-transfer fluids. Electronics generate substantial amounts of heat, which needs to be dissipated in order to maintain performance. For the lubricant field, a primary example is the electric vehicle (EV). EV batteries need to operate at a […]
Neil Canter

Combustion optimization in gas burners of reverberatory Furnaces during nickel-alloy melting

In recent years, due to climate change, environmental sustainability programs have been created that require the search for alternatives to reduce air emissions and reduce fuel consumption. The combustion industry is looking for an effective solution to increase the life cycle of its equipment and improve combustion efficiency without neglecting safety or savings. The efficiency […]
Valeria Esthefania Quiroz Cabascango, Vladimir Yurevich Bazhin

January 2022

Effect of heat and cryogenic treatment on wear and toughness of HSS AISI M2

Despite the promising results obtained with cryogenic treatment of tool steels, there are still contradictions regarding its benefits, and there is no consensus regarding its mechanisms in the steel microstructure. The goal of this work is to investigate the optimum heat treatment process parameters together with the cryogenic treatment. Samples of AISI M2 steel were […]
Dieison G. Fantineli, Cleber T. Parcianello, Tonilson S. Rosendo, Marco D. Tier, Afonso Reguly

The impact of complete lubricant removal on the mechanical properties and production of PM components

The greatest hurdle in the production of powder metal components is lubricant removal. Over the years, equipment and processes have been developed to aid in the removal of the lubricant during the sintering process. Unfortunately, these technologies were not successful in removing all the lubricant. Recent developments in the sintering process have resulted in a […]
Scot E. Coble, Jacob P. Feldbauer, Amber Tims, Craig Stringer, Stephen Feldbauer

Vacuum heat treating and aluminum alloys

This study investigated the interface morphology, microstructure composition, and connection strength of 7A52 aluminum alloy-Al2O3 ceramic brazed joints under heat-treatment conditions. Alumina ceramics were first treated with electroless nickel plating, followed by vacuum heat treatment at different temperatures. Then, an Al-Si-Mg intermediate layer was placed between the treated alumina ceramic and 7A52 aluminum alloy for […]
Deku Zhang, Xusheng Qian, Xiaopeng Li, Kehong Wang
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