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This specification covers the requirements for three types and three classes for vacuum deposited cadmium coating.

This specification covers requirements for poly-monochloro-para-xylylene coatings.

This specification covers the procedure for applying a disilicide diffusion coating to molybdenum and molybdenum alloy parts by the pack cementation method and the properties of the coating so deposited. ...This specification covers the procedure for applying a disilicide diffusion coating to molybdenum and molybdenum alloy parts by the pack cementation method and the properties of the coating so deposited.

To improve the poor coatability, slurry properties of washcoat and coating machines are improved. Catalysts of thin wall substrates have been produced on a commercial scale since 1987. ...The process coating experiences during this period are discussed in terms of coatability, catalyst physical properties, and catalytic performance in this paper.

The FLASHJETTM Coating Removal System is considered a fast, cost effective and environmentally sound method of stripping primers, paints and other coatings from metallic and composite substrates. ...The FLASHJETTM Coating Removal System is considered a fast, cost effective and environmentally sound method of stripping primers, paints and other coatings from metallic and composite substrates. The stripping head or End-Effector, moves about the surface to be stripped by a programmable eight-axis robot. ...The process begins with a flash from a high energy xenon lamp that “ablates” the molecular structure of the coating. Simultaneously, a low pressure blast of dry-ice particles cools the substrate surface and sweeps away any resulting residue.

To accelerate the oxidation of soot particles collected in the DPF we have developed novel catalytic coatings with a variety of methods based on conventional and novel synthesis routes. The developed catalytic compositions exhibit significant direct soot oxidation as evaluated by reacting mixtures of diesel soot and catalyst powders in a thermogravimetric analysis apparatus (TGA). ...Interestingly enough it is shown that the often-conflicting targets of high filtration efficiency, low pressure drop and high soot oxidation activity can be achieved simultaneously using the developed coating technologies.

Plastic Media Blasting (“PMB”) is a revolutionary method for the rapid and safe removal of primer, paint and even powder and other chemically resistant coatings from a vast range of products without the use of toxic chemicals or pneumatic blasting with hard abrasives.

Future catalyst systems need to be highly efficient in a limited packaging space. This normally leads to a design where the flow distribution, in front of the catalyst, is not perfectly uniform. Measurements on the flow test bench show that the implementation of perforated foils for the corrugated and flat foils has the capability to distribute the flow within the channels in the radial direction so that the maximum of the given catalyst surface is of use, even under very poor uniformity indices. Therefore a remarkable reduction in back pressure is measured. Emission results demonstrate cold start improvement due to reduced heat capacity. The use of LS - structured ( Longitudinal structured ) corrugated foils creates a high turbulence level within the single channels. The substrate lights-up earlier and the maximum conversion efficiency is reached more quickly.

This paper relates to the development of an improved gasket product by the use of a new liquid rubber coating material. The new liquid rubber, a terpolymer of acrylonitrile, diene and Substituted acrylamide monomers, has been specially synthesized for this purpose. ...The new liquid rubber, a terpolymer of acrylonitrile, diene and Substituted acrylamide monomers, has been specially synthesized for this purpose. The coating process involves a 100% solid system. Coated products made out of this liquid rubber on SAE 1008 steel, have been tested for gasket applications.

The GPF is used under higher temperatures than diesel engine and the amount of particulate matter (PM) is also less than in a diesel engine, so GPF coating in-the-wall is an effective way to reduce the pressure drop. Also, it was found that a deep coating into the wall helps maintain larger pore diameters and enlarges the flow route of the gas. ...Also, it was found that a deep coating into the wall helps maintain larger pore diameters and enlarges the flow route of the gas. ...At the same time, coating on-the-wall also improved the PM filtration efficiency. This technology is utilized for diesel engine particulate filters (DPF) as well.

A new process developed by Sherwin Williams Chemical Coatings Division now makes the in-mold coating technology attractive to small volume suppliers and permits use on virtually all types of parts, regardless of configuration. ...The new process, called High Pressure Injection, also expands the use of in-mold coatings to a greater number of part configurations, from simple to complex. Parts which previously have been impossible to coat due to complex part configuration and vertical walls are being successfully coated on production lines now using the High Pressure Injection Process.

In order to seal a fluid, it is necessary to design the rubber coating and the contact pressure with consideration of the surface roughness. In this study, leak tests are conducted with the softmetal, and the effects of contact conditions, such as surface roughness, load, rubber thickness and rubber material are investigated.

Nowadays diesel particulate filters (DPFs) with catalyst coatings have assumed one of the most significant roles for road vehicle emission control. DPFs made of re-crystallized SiC (SiC-DPFs) have guaranteed the soot filtration efficiency for the current regulation. ...In order to further enhance their filtration efficiency, even though a higher porosity and larger pore size must be adopted for sufficient catalyst coating capacity, we developed the concept of a filtration layer on the DPF inlet channel walls and researched its performance both theoretically and experimentally.

This paper discusses gasket technology to address the increasing demands of providing effective sealing solutions for exhaust systems. Increasingly, effectively sealed joints are required in exhaust systems to meet environmental and emissions regulations. These applications are especially demanding for sealing. With low load joints, significant flange movement, and temperatures in excess of 850°C (1550°F), it is difficult for traditional gaskets to provide an effective seal, typically degrading or creeping at operating temperatures. Utilizing multi-layer steel gasket technology, this paper details a solution to these problems. Temperature stability and sealing data is presented demonstrating the superior performance of this material. Also presented is information from recent field experience.

Sealing these various hardware surface finishes is accomplished via a rubber on the surface. The coating's ability to conform to various surface irregularities while withstanding high temperatures, long term coolant and oil exposure, and joint shearing forces is paramount to long term sealing. ...This paper will explore the sealing capabilities of a highly conformable flouro-polymer rubber coating developed specifically to seal rougher surface finishes.

This paper introduces a coating that has both excellent temperature stability and good compliance, thus forming an excellent sealing enhancement for metallic layers in exhaust system gaskets.

As a result, it was found that thinner wall thickness design had lower pressure loss before coating and that advantage was kept after coating until 60 g/l wash-coat amount. 6 mil wall thickness design had a potential of about 30% downsizing of the filter size compared to 13 mil one from the point of view of coated pressure loss. ...The PN filtration efficiency was influenced by the wall thickness and pore size distribution after catalyst coating. As a conclusion, it was confirmed that the thinner-wall high-porosity R-SiC GPF has a possibility of catalyst amount reduction, better packaging for TWC coated GPF system because of its downsizing potential due to lower pressure loss and smaller heat capacity.

Characterization of these new materials is challenging as the zirconium oxide-based coatings are over ten times thinner than the current zinc phosphate coatings. Methods that are currently employed for studying zinc phosphate films such as coating weight determination by weighing, and scanning electron microscopy-energy dispersive x-ray spectroscopy (SEM-EDS) are not sensitive enough to fully characterize these materials. ...Therefore, we have employed a combination of surface analysis (Auger electron spectroscopy) and x-ray fluorescence to obtain a more detailed characterization of the zirconium oxide-based pretreatment coatings. These methods allow for an assessment of the variability in coating composition as a function of key parameters such as metal substrate and process variations. ...Relatively thick, uniform coatings were found on galvanized substrates while significantly thinner coatings were observed on cold rolled steel (CRS) and aluminum (AL).

The full-size high porosity DPF prototype was evaluated in the engine bench and it was confirmed that the high porosity SiC-DPF with oxide film forming technology had a possibility to achieve both the high SCR catalyst coating capability and high filtration efficiency after coating to meet Euro6 particle number emission limit to realize the SCR coated DPF system. ...To integrate the SCR converter into the DPF, it is necessary to design the DPF substrate's porosity higher and pore size larger than conventional DPF to improve SCR catalyst coating capability. However to make the porosity higher will lose the robustness in general. Against these problems, it was studied to improve the high porosity DPF performances by applying the new technology to modify the thermal shock resistance property.

High pressure water jets can selectively remove materials, which makes it ideal for coatings removal and surface preparation. A review of some fundamental aspects of this technology will be presented for a better understanding of its potentials, which are evidenced by many published industrial applications.