摘要:
A method to apply nano-crystalline diamond onto a selected substrate, including preparing Nanodiamond slurry of nanodiamond particles dispersed in a medium. The medium may include a liquid or a sol-gel. The selected substrate is immersed in the Nanodiamond slurry for a predetermined period of time. Then the substrate is removed from the slurry. The substrate is then dried with a flow of inert gas. The substrate is left coated with a coating of the nanodiamond particles that are highly adherently held by van der Waals forces.
摘要:
The object invention of the present patent relates to both vacuum and atmospheric pressure plasma processes to confer stone materials and composites surface properties such as water-repellency, oil-repellency, resistance to chemical aggressions by acids, bases etc., UV resistance, resistance to the bleaching of the substrate, anti-bacterial properties, anti-adhesive properties with relation to atmospheric dusts specifically in an urban environment, anti-sliding properties and increase in the friction coefficient.
摘要:
This invention relates to the low-temperature polymerisation of an organic or inorganic film obtained by converting reagent gases to the plasma state on the surface of an agglomerate material.
摘要:
The present invention relates to a superconducting ceramic structure consisting of a superconducting ceramic substrate whose surface carries a film plasma-polymerized from a silazane bond-containing organosilicon compound. This structure is characterized by the absence of deterioration in its superconducting properties even upon contact with water or water vapor, and thus by the long-term retention of its superconducting properties.
摘要:
An article includes a substrate defining at least one at least partially obstructed surface. The substrate includes at least one of a ceramic or a ceramic matrix composite. The article also includes a multilayer, multi-microstructure environmental barrier coating on the at least partially obstructed substrate. The multilayer, multi-microstructure environmental barrier coating includes a first layer comprising a rare earth disilicate and a substantially dense microstructure; and a second layer on the first layer. The second layer includes a columnar microstructure and at least one of a rare earth monosilicate or a thermal barrier coating composition comprising a base oxide comprising zirconia or hafnia; a primary dopant comprising ytterbia; a first co-dopant comprising samaria; and a second co-dopant comprising at least one of lutetia, scandia, ceria, gadolinia, neodymia, or europia.
摘要:
A process is disclosed for depositing diamond onto a shaped article by chemical vapor phase deposition, which includes placing the shaped article in a suspension of an abrasive powder (e.g., diamond powder) in a liquid (the material of said powder having a hardness greater than the hardness of the material of the shaped article), agitating the suspension containing the shaped article for a time sufficient for the surface of the shaped article to become abraded, removing the shaped article from the suspension and drying it, and then carrying out the chemical vapor phase deposition of the diamond. Also disclosed are diamond-coated shaped articles (e.g., diamond-coated graphite fibers having fiber diameters less than about 100 microns).