Multifunctional composite coatings for metal whisker mitigation
| DWPI Title: Conductive component used as e.g. capacitor, comprises metal layer formed from whisker-forming material, and conformal coating, having matrix having polymer or externally alignable metallic particles, disposed on portion of metal layer |
| Abstract: The present invention relates to composite coatings including particles embedded in a matrix, as well as methods and uses thereof. In some examples, the particles are aligned to enhance mitigation of whisker formation from an underlying metal material. Such coatings can be applied to electrical components, thereby reducing the possibility of electrical short circuits from aberrant whisker growth. |
| Use: The component is useful as a capacitor, a transistor, or an inductor (claimed). |
| Advantage: The component: utilizes the conformal coating that exhibits beneficial penetration resistance, chemical stability, thermal stability, moisture resistance, low outgassing, low stress, high electrical insulation and/or low gas permeability, thermal conductivity of greater than 1 W/m.K and/or specific conductivity enhancement of greater than 50 and specific dielectric enhancement of greater than 100 (claimed), is applied to component, thus reducing the possibility of electrical short circuits from aberrant whisker growth, and reduces the out-of- plane gas permeability, to create a new class of multifunctional tin whisker mitigation coatings for electronic systems that use tin-plated components or tin-containing solders; and utilizes the externally alignable metallic particles that are aligned to enhance mitigation of whisker formation from an underlying metal material. |
| Novelty: Conductive component comprises: a metal layer formed from a whisker-forming material; and a conformal coating disposed on at least a portion of the metal layer, where the coating further comprises a matrix comprised of at least one polymer or many externally alignable metallic particles embedded in the matrix and an average projection of a particle director, which is a unit vector, normal to a surface of the metal layer is greater than 0.8. |
| Filed: 10/29/2015 |
| Application Number: US14926545A |
| Tech ID: SD 13208.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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