Toyota Jidosha Kabushiki Kaisha

Daiki Kuboyama

Jyunya Murai

Akira Kato

Hiroki Nishijima

Kazuyuki Kuwano

Miwako Shionoya

The present disclosure provides a conductive ink or a conductive paste having highly conductive property and excellent low-temperature sinterability. One aspect of the present disclosure relates to a conductive ink or a conductive paste containing metal nanoparticles, a water or a hydrophilic solvent having a vapor pressure of 10 hPa or more, and an additive solvent. A distance Ra between a Hansen solubility parameter of the metal nanoparticles and a Hansen solubility parameter of the additive solvent is in a range of from 2.5 to 13. A distance Rb between a Hansen solubility parameter of the water or the hydrophilic solvent and the Hansen solubility parameter of the additive solvent is 35 or less. Another aspect of the present disclosure relates to a method for producing the conductive ink or the conductive paste, and a method for selecting the additive solvent contained in the conductive ink or the conductive paste.

Conductive ink or conductive paste, and method for producing the same

The present disclosure provides a radio wave transmissive metallic member having an excellent metallic luster. The present disclosure relates to a metallic member and a method for manufacturing the same. The metallic member comprises a substrate body, an ion-exchange resin layer formed on the substrate body, and a metal particle layer formed on the ion-exchange resin layer, wherein metal particles having a high aspect ratio are longitudinally oriented with respect to the ion-exchange resin layer and the substrate body.

Radio wave transmissive metallic member and method for manufacturing the same

Composite particles sinterable at a low temperature and allow forming a sintered body that exhibits a large extension are provided. The composite particles include microparticles having an average crystallite diameter of 0.6 to 10 &#x3bc;m and containing a metal, and nanoparticles adhered to a surface of the microparticle, having an average crystallite diameter of 3 to 100 nm, and containing a metal of a same kind as the metal contained in the microparticle.

Growing community of inventors

Toyota, Japan

Daiki Kuboyama