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Environmentally friendly powder coatings have been used widely for primer coating and clear coating, but there is no precedent for its use for base coating. ...Environmentally friendly powder coatings have been used widely for primer coating and clear coating, but there is no precedent for its use for base coating. This time, we optimized the condition of surface treatment of pigment and hardening behavior of constituent resin in the melting process and succeeded in developing a metallic powder coating for aluminum wheels that fulfills the appearance and the quality requirements of aluminum wheels. ...This time, we optimized the condition of surface treatment of pigment and hardening behavior of constituent resin in the melting process and succeeded in developing a metallic powder coating for aluminum wheels that fulfills the appearance and the quality requirements of aluminum wheels.

Multi-functional material that gives sound insulating properties is called sound insulating underbody coating. This paper describes the development of underbody coating material with powdered acrylic composition as an alternative to polyvinyl chloride resin. ...Underbody coating is used to prevent chipping damage of the automobile underbody and wheel well. Multi-functional material that gives sound insulating properties is called sound insulating underbody coating. ...This multi-functional underbody coating is the first application in the world with weight reduction and cost saving, and in a more environmentally acceptable manner.

Subsequently, this research focused on the coating structure to maximize the conversion activity and oxygen storage capacity (OSC) performance and improve gas diffusivity in the coating layer. The particle size of each coating material was controlled to maximize the heat resistance and OSC performance. ...Therefore, a high-performance three-way catalyst with an advanced coating layer has been developed to lower the amount of precious metal usage. Fuel efficiency improvement technologies such as high compression ratios and a large-volume exhaust gas recirculation (EGR) generally tend to increase the ratio of hydrocarbons (HC) to nitrogen oxides (NOx) in exhaust gas. ...This research focused on the palladium (Pd) loading depth in the coating layer with the aim of improving the hydrocarbon (HC) conversion activity of the catalyst.

Promising coating materials are rapidly selected by evaluating properties for ideal coating materials from computational databases containing a vast collection of Li compounds. ...This paper presents a systematic screening method to identify coatings to reduce impedance and maintain interface stability during battery operation. Promising coating materials are rapidly selected by evaluating properties for ideal coating materials from computational databases containing a vast collection of Li compounds. ...This approach is demonstrated to be an efficient way to predict and evaluate functional coatings for a high performance all-solid -state battery design.

In order to achieve the Toyota Environmental Challenge of 2050 (zero CO2 emissions), we have developed an innovative coating system that achieves more than 95% transfer efficiency. In order to reduce paint loss in the painting process, it is necessary to eliminate overdust and bounce dust.

Trivalent chromate coating is replacing the conventional hexavalent chromate coating applied on zinc plating. Zinc plating uses one of three types of plating baths (zincate, cyanide and chloride) according to the characteristics required of subject parts. ...It has been recognized that trivalent chromate coating provides different corrosion resistance depending on the type of zinc plating bath used. ...Zinc plating with chromate coating were analyzed to clarify the cause of the corrosion resistance variation with the type of zinc plating bath.

In the 1st generation Toyota "MIRAI" fuel cell stack, carbon protective surface coating is deposited after individual Ti bipolar plate being press-formed into the desired shape. ...Such a process has relatively low production speed, not ideal for large scale manufacturing. A new coating concept, consisting of a nanostructured composite layer of titanium oxide and carbon particles, was devised to enable the incorporation of both the surface treatment and the press processes into the roll-to-roll production line. ...The initial coating showed higher than expected contact resistance, of which the root cause was identified as nitrogen contamination during the annealing step that inhibited the formation of the composite film structure.

In this report, we will explain an In Mold Coating (IMC) paint and molding process that enables the manufacture of Carbon Fiber Sheet Molding Compound (C-SMC) roof molding and painting at once.

Heat flux measurements for the developed insulation coating show that a new insulation material formed from silica-reinforced porous anodized aluminum (SiRPA) offers both heat-rejecting properties and reliability in an internal combustion engine. ...Furthermore, a laser-induced phosphorescence technique was used to verify the temporal changes in the surface temperature of the developed insulation coating. This was found to quickly rise during the combustion stroke and then drop during the expansion stroke. ...Second, a SiRPA coating was formed over the entire surface of the diesel piston cavity, and the thermal efficiency and the heat-loss reduction were investigated for a single-cylinder direct-injection (DI) diesel engine with a bore of 86 mm and a stroke of 96 mm.

In this way, we found that there is a clear difference between the insulation coating and non-insulation coating, thus confirming the temperature swing phenomenon of the insulation coating. ...As a means of achieving this, we developed a "temperature swing heat insulation coating" [5, 6, 7, 8, 9]. This reduces the heat flux from the combustion chamber into the cooling water by making the wall temperature follow the gas temperature as much as possible during the expansion and exhaust strokes. ...A thermal insulation coating with a low thermal conductivity and low thermal capacity was developed in order to achieve this temperature swing.

The design guidelines for the coating particle size and coating amount of the PM trap layer were investigated, and actual manufacturing issues were also identified.

This paper will describe in detail the advantage of hexagonal cell configuration versus round or square configurations with respect to the following features: 1 High Oxygen Storage Capacity (OSC) performance due to uniformity of the catalyst coating layer 2 Low backpressure due to the large hydraulic diameter of the catalyst cell 3 Quick light off characteristics due to efficient heat transfer and low thermal mass

To attain these objectives, we have developed a new DPNR catalyst by the adoption of a new porous substrate structure and the improvement of the catalyst coating technique. The new DPNR catalyst will be mounted on the Avensis for commercial use in the European market.

Since there is a tradeoff between the PM and NOx that are discharged from diesel engines, new emission reduction measures will be needed in order to greatly reduce both at the same time. By coating DPFs (Diesel Particulate Filters), which have been studied before, with NOx storage reduction catalysts, it has been found that simultaneous reduction of PM and NOx is possible, and so research was carried out in order to optimize a DPF for this type of system use.

An investigation of the mechanism of this corrosion resistance leads to the following observations: 1) Even in an area where the paint coating is missing, SiO2 is precipitated to cover the steel material and passivate the zinc. 2) The passive material is Simonkolleite (Zn5(OH)8Cl2·H2O) and it fills the area from where the paint has been lost. 3) The deposition layer is closely packed by the effect of trivalent chromate and the passivation of the deposition is maintained by nickel.

The colors were generated on the cells by coating the highly transparent automotive paint. We demonstrate a bright, uniform, and solid appearance on the solar cells with small output power reduction of less than 5% compared to the cells without the paintings for chromatic colors.

As a countermeasure for those two concerns, we had investigated cellulose nanofiber (CNF) dispersion liquid as both the coating binder and rheology control agent in a new type of waterborne paint system. CNF is an effective rheology control agent because it has strong hydrogen bonds with other fiber surfaces in waterborne paint.

Color design is playing a more important role recently when establishing automotive commercial value. High chroma TiO2 pigments which have less than 1/3 the aspect ratio of the current interfere pigments have been developed. Anatase type TiO2 pigments, which have high photo-catalytic activity can now also be used for automotive paints.

“Anti-scratch performance” is the highest in customer's needs of paint. To achieve anti-acid and anti-scratch performance, we selected 2K-urethane because of a high degree of freedom in paint design. In addition, we have done a precise molecular design of the acrylic polyol and the isocyanate. As a result, “a highly durable, soft, fine-crosslinking paint film” was achieved, and “anti-scratch clear coat” that surpassed the current clear coats was developed.

Currently, to achieve the desired design in automotive paint, absorption pigments, such as organic pigments, are used in combination with brilliant pigments (ex. aluminum or mica etc.). However, many beautiful colors exist in the world, especially in the natural world. Until now, automotive paints have not been able to replicate those colors. In this project, by first analyzing the coloring principles of the natural world, we have focused on the development of a previously non-existent coloring technology (structural color). By combining this with nanostructure control technology, we have established a radically new coloring process enabling the design of hues, chromaticity and reflection intensity. This technology has tangible results, as new pigments are available for paint formulations.