摘要:
The present invention discloses at least one source metal that is embedded in at least one inert material to form a stand-alone structure and process thereof. It is preferred that the source metal is nickel or alloy thereof, and the inert material is at least one ceramic.
摘要:
Methods for coating the interior surface of tubular structures having high aspect ratios and tubular structures produced by such methods. The interior surface of the tubular structure is coated by inducing a magnetic field having a given magnitude around a circumference along a length of the tubular structure, applying a bias at a given voltage to the tubular structure, and exposing the interior surface to a precursor material to deposit the precursor material onto the interior surface of the tubular structure.
摘要:
The present invention relates to a method and apparatus for ensuring uniform and reproducible heating of a deformation-tolerant substrate during low-pressure chemical vapor deposition (CVD) of a metal film on a surface of the substrate. The uniform and reproducible heating of the substrate is achieved in the present invention by positioning the substrate on a beveled surface of a chamfered ring which is located above the heating element in a CVD reactor chamber. The space between heating element, chamfered ring and bottom surface of the substrate define a cavity between the substrate and heating element that ensures that the substrate is heated by radiative means rather than direct contact.
摘要:
The present invention provides for sequential chemical vapor deposition by employing a reactor operated at low pressure, a pump to remove excess reactants, and a line to introduce gas into the reactor through a valve. A first reactant forms a monolayer on the part to be coated, while the second reactant passes through a radical generator which partially decomposes or activates the second reactant into a gaseous radical before it impinges on the monolayer. This second reactant does not necessarily form a monolayer but is available to react with the monolayer. A pump removes the excess second reactant and reaction products completing the process cycle. The process cycle can be repeated to grow the desired thickness of film.
摘要:
A thermal barrier coating (TBC) system and method for improving the thermal fatigue life of a thermal barrier coating. The invention entails modifying the surface morphology of an aluminide bond coat that adheres the thermal barrier coating to a substrate of a superalloy component. The aluminide bond coat has columnar grains, such that grain boundaries are exposed at the surface of the bond coat and define ridges. The surface of the bond coat is then treated so that a sufficient amount of material is removed from the grain boundary ridges and other surface peaks to flatten the bond coat surface, i.e., the ridges and peaks are replaced with flattened surfaces that are nearly parallel to the diffusion zone of the bond coat. By removing these surface irregularities, it is believed that a more stable bond coat surface is created where the critical alumina-bond coat interface will exist following a thermal treatment, such as TBC deposition.
摘要:
A method of removing reactive metal from a metal-coated reactor system, comprising contacting at least a portion of a metal-coated reactor system containing reactive metal with a getter to produce movable metal, and fixating the movable metal, the getter, or both. The contacting is preferably done prior to catalyst loading. A preferred coating metal comprises tin and a preferred getter comprises HCl. The invention is also a method for reducing catalyst contamination from a metal which was used to coat a reactor system. The method comprises contacting a metal-coated reactor system, with a gaseous halogen-containing compound to produce movable metal; thereafter or simultaneously, at least a portion of the movable metal is removed from the reactor system. Then a halided catalyst is loaded into the reactor system.
摘要:
Methods of forming a film on a substrate using chemical vapor deposition techniques and pyrazolyl complexes. The complexes and methods are particularly suitable for the preparation of semiconductor structures.
摘要:
A process for the continuous production of coated metallic bands obtained by physical phase vapor deposition includes the following steps carried out on a band, eventually coated with zinc or its alloys, in motion and maintained in a vacuum environment: heating the band to be coated; activating the band surface; heat stabilizing the band; depositing a zinc layer on the metallic band; secondary heat stabilizing the band; and depositing one or more elements or compounds on the zinc layer, these elements being able to synergistically interact with the zinc layer to obtain high corrosion resistance, weldability, ductility, and adhesion.
摘要:
A noble method of forming thin films for producing semiconductor or flat panel display devices is disclosed. The method is a way of effectively forming thin films on a substrate even if reactants do not react readily in a time-divisional process gas supply sequence in a reactor by supplying reactant gases and a purge gas cyclically and sequentially in order to prevent gas-phase reactions between the reactant gases and also by generating plasma directly on a substrate synchronously with the process gas supply cycle. The method has advantages of effective thin film formation even if the reactant gases do not react readily, minimization of the purge gas supply time for reduction in process time, reduction of particle contamination during film formation process, as well as thin film formation at low temperatures.
摘要:
A method for reducing catalyst contamination in a hydrocarbon conversion reactor system, comprising the steps of contacting at least a portion of a metal-coated hydrocarbon conversion reactor system comprising a reactive metal with a getter to produce a movable metal; and fixating the movable metal.