公开(公告)号：US20230183882A1

公开(公告)日：2023-06-15

申请号：US17924907

申请日：2021-05-12

申请人： The George Washington University

发明人： Stephen M. HSU ,  Govindaiah PATAKAMURI

IPC分类号： C25F3/14 ,  C25F3/06

CPC分类号： C25F3/14 ,  C25F3/06

摘要： A method of forming a surface texture includes arranging a flexible mask (610, 920) with a pattern over a surface (621) of a component (620); and performing electrochemical etching on the surface (621) of the component (620) to form a surface texture on the surface (621) according to the pattern of the flexible mask.

公开(公告)号：US20190193372A1

公开(公告)日：2019-06-27

申请号：US16290648

申请日：2019-03-01

申请人： The George Washington University

发明人： Stephen M. HSU ,  Yang JING ,  Yufei MO ,  Dongyun HUA ,  Ming CHEN

IPC分类号： B32B3/30 ,  C23F1/02 ,  F02F1/20 ,  B05D5/08

CPC分类号： B32B3/30 ,  B05D5/08 ,  C23F1/02 ,  F02F1/20 ,  F05C2253/08 ,  F05C2253/083 ,  Y10T428/24355 ,  Y10T428/24851

摘要： The present invention relates to techniques for lowering friction between moving surfaces of, for example, an internal combustion engine. Friction reduction is achieved by adding texture modifications to surfaces that come in contact with each other. Texture modifications that reduce friction in accordance with the present invention include dimples of varying geometries and depths ion the surfaces of components. The present invention also relates to the lubrication technique for applying the texture to the surfaces. In another embodiment, the patterned soft mask is applied onto a large surface (flat or curved including cylindrical rollers surfaces) to be followed by electrochemical etching to imprint the textures onto the component And, in another embodiment, a diamond-like-carbon (DLC) film may be applied to the turbine component to also reduce friction.

公开(公告)号：US20170073610A1

公开(公告)日：2017-03-16

申请号：US15311119

申请日：2015-05-15

申请人： The George Washington University

发明人： Stephen M. HSU ,  Fei ZHAO

IPC分类号： C10M169/04 ,  C10M149/22 ,  C10M149/20 ,  B01J13/18 ,  C10M101/02

CPC分类号： C10M169/04 ,  B01J13/14 ,  B01J13/18 ,  C10M101/02 ,  C10M149/20 ,  C10M149/22 ,  C10M2203/022 ,  C10M2215/02 ,  C10M2217/045 ,  C10M2217/046 ,  C10M2223/045 ,  C10N2230/06 ,  C10N2230/10 ,  C10N2250/02 ,  C10N2250/16 ,  C11D17/0039

摘要： The present disclosure relates to new and optimized processes for the preparation of micro- and nano-scale capsules containing lubricant chemical additives. The present disclosure also relates to micro- and nano-scale capsules prepared by such processes, which are useful in a variety of applications, including automotive lubricants, diesel lubricants, industrial lubricants, metal-working lubricants, coolants, and process fluids. Micro- and nano-scale capsules prepared as described herein have the required properties that such capsules need to exhibit in order to function effectively and meet the requirements imposed by engine lubrication conditions. The microcapsules may be dispersed in a lubricating oil such that the lubricant exhibits improved stability and anti-wear performance, thereby improving engine fuel efficiency and performance.

摘要翻译： 本公开涉及用于制备含有润滑剂化学添加剂的微米级和纳米级胶囊的新的和优化的方法。 本公开还涉及通过这些方法制备的微米级和纳米级胶囊，其可用于各种应用，包括汽车润滑剂，柴油润滑剂，工业润滑剂，金属加工润滑剂，冷却剂和工艺流体。 如本文所述制备的微米级和纳米级胶囊具有所需的性能，这种胶囊需要展现才能有效地发挥功能并满足发动机润滑条件所要求的要求。 微胶囊可以分散在润滑油中，使得润滑剂表现出改善的稳定性和抗磨损性能，从而提高发动机燃料效率和性能。