Abstract:
Se describen los articulos de peso ligero que comprenden un material polimerico al menos parcialmente recubierto con un material metalico de grano fino. El material metalico de grano fino tiene un tamano de grano promedio de 2 nm a 5,000 nm. Un espesor de entre 25 micrometros y 5 cm, y una dureza entre 200 VHN y 3,000 VHN. Los articulos de peso ligero son fuertes y ductiles y muestran altos coeficientes de restriccion y una alta rigidez, y son particularmente adecuados para una variedad de aplicaciones que incluyen partes aeroespaciales y automovilistas, articulos deportivos y similares.
Abstract:
Fine-grained (average grain size 1nm to 1,000nm) metallic coatings optionally containing solid particulates dispersed therein are disclosed. The fine- grained metallic materials are significantly harder and stronger than conventional coatings of the same chemical composition due to Hall-Petch strengthening and have low linear coefficients of thermal expansion (CTEs). The invention provides means for matching the CTE of the fine-grained metallic coating to the one of the substrate by adjusting the composition of the alloy and/or by varying the chemistry and volume fraction of particulates embedded in the coating. The fine-grained metallic coatings are particularly suited for strong and lightweight articles, precision molds, sporting goods, automotive parts and components exposed to thermal cycling. The low CTEs and the ability to match the CTEs of the fine-grained metallic coatings with the CTEs of the substrate minimize dimensional changes during thermal cycling and prevent premature failure.
Abstract:
Fine-grained (average grain size 1nm to 1,000nm) metallic coatings optionall y containing solid particulates dispersed therein are disclosed. The fine- grained metallic materials are significantly harder and stronger than conventional coatings of the same chemical composition due to Hall-Petch strengthening and have low linear coefficients of thermal expansion (CTEs). The invention provides means for matching the CTE of the fine-grained metall ic coating to the one of the substrate by adjusting the composition of the allo y and/or by varying the chemistry and volume fraction of particulates embedded in the coating. The fine-grained metallic coatings are particularly suited f or strong and lightweight articles, precision molds, sporting goods, automotive parts and components exposed to thermal cycling. The low CTEs and the abilit y to match the CTEs of the fine-grained metallic coatings with the CTEs of the substrate minimize dimensional changes during thermal cycling and prevent premature failure.
Abstract:
Lightweight articles comprising a polymeric material at least partially coated with a fine-grained metallic material are disclosed. The fine-grained metallic material has an average grain size of 2nm to 5,000nm, a thickness between 25 micron and 5cm, and a hardness between 200VHN and 3,000 VHN. The lightweight articles are strong and ductile and exhibit high coefficients of restitution and a high stiffness and are particularly suitable for a variety of applications including aerospace and automotive parts, sporting goods, and the like.
Abstract:
Lightweight articles comprising a polymeric material at least partially coat ed with a fine-grained metallic material are disclosed. The fine-grained metall ic material has an average grain size of 2nm to 5,000nm, a thickness between 25 micron and 5cm, and a hardness between 200VHN and 3,000 VHN. The lightweight articles are strong and ductile and exhibit high coefficients of restitution and a high stiffness and are particularly suitable for a variety of applications including aerospace and automotive parts, sporting goods, and t he like.
Abstract:
Lightweight articles comprising a polymeric material at least partially coat ed with a fine-grained metallic material are disclosed. The fine-grained metall ic material has an average grain size of 2nm to 5,000nm, a thickness between 25 micron and 5cm, and a hardness between 200VHN and 3,000 VHN. The lightweight articles are strong and ductile and exhibit high coefficients of restitution and a high stiffness and are particularly suitable for a variety of applications including aerospace and automotive parts, sporting goods, and t he like.
Abstract:
Un artículo que comprende: a) un sustrato permanente que comprende un material polimérico; y b) un recubrimiento de material metálico de grano fino que tiene un tamaño medio de grano entre 2 nm y 750 nm, un espesor entre 25 micrones y 5 mm, una dureza entre 200 VHN y 3.000 VHN, cubriendo dicho material metálico de grano fino por lo menos una parte de dicho sustrato permanente.
Abstract:
Fine-grained (average grain size 1nm to 1,000nm) metallic coatings optionally containing solid particulates dispersed therein are disclosed. The fine-grained metallic materials are significantly harder and stronger than conventional coatings of the same chemical composition due to Hall-Petch strengthening and have low linear coefficients of thermal expansion (CTEs). The invention provides means for matching the CTE of the fine-grained metallic coating to the one of the substrate by adjusting the composition of the alloy and/or by varying the chemistry and volume fraction of particulates embedded in the coating. The fine-grained metallic coatings are particularly suited for strong and lightweight articles, precision molds, sporting goods, automotive parts and components exposed to thermal cycling. The low CTEs and the ability to match the CTEs of the fine-grained metallic coatings with the CTEs of the substrate minimize dimensional changes during thermal cycling and prevent premature failure.
Abstract:
Se describen los recubrimientos metalicos de grano fino (tamano de grano promedio de 1 nm hasta 1,000 nm) que contienen opcionalmente particulados solidos dispersados en estos. Los materiales metalicos de grano fino son significativamente mas duros y mas fuertes que los recubrimientos convencionales de la misma composicion quimica, debido al reforzamiento de may-Petch, y tienen bajos coeficientes lineales de expansion termica (CTEs). La invencion proporciona los medios para igualar el CTE del recubrimiento metalico de grano fino a uno del sustrato, a aquel del sustrato, mediante el ajuste de la composicion de la aleacion y/o, mediante la variacion de la quimica y la fraccion volumetrica de los particulados incrustados en el recubrimiento. Los recubrimientos metalicos de grano fino son particularmente adecuados para articulos fuertes y de peso ligero, moldes de precision, articulos deportivos, partes automovilisticas y componentes expuestos al ciclo termico. Los bajos CTEs y la habilidad para igualar los CTEs de los recubrimientos metalicos de grano fino con los CTEs del sustrato, reducen al minimo los cambios dimensionales durante el ciclo termico y previenen la falla prematura.
Abstract:
Lightweight articles comprising a polymeric material at least partially coated with a fine-grained metallic material are disclosed. The fine-grained metallic material has an average grain size of 2nm to 5,000nm, a thickness between 25 micron and 5cm, and a hardness between 200VHN and 3,000 VHN. The lightweight articles are strong and ductile and exhibit high coefficients of restitution and a high stiffness and are particularly suitable for a variety of applications including aerospace and automotive parts, sporting goods, and the like.