摘要:
An ion beam deposition method is provided for manufacturing a coated substrate with improved abrasion resistance, and improved lifetime. The substrate is first chemically cleaned to remove contaminants. Secondly, the substrate is inserted into a vacuum chamber (1) on holder (3), and the air therein is evacuated via pump (2). Then the substrate surface is bombarded with energetic ions from ion beam source (4) supplied from inert (5) or reactive (6) gas inlets to assist in removing residual hydrocarbons and surface oxides, and activating the surface. After sputter-etching the surface, a protective, abrasion-resistant coating is deposited by ion beam deposition where reactive gas inlets (7, 8 and 9) may be employed. The ion beam-deposited coating may contain one or more layers. Once the chosen coating thickness is achieved, deposition is terminated, vacuum chamber pressure is increased to atmospheric pressure and the coated substrate products having improved abrasion-resistance are removed from the chamber. These coated products may be plastic sunglass lenses, ophthalmic lenses, bar codes scanner windows, and industrial wear parts needing protection from scratches and abrasion.
摘要:
A process for depositing amorphous or nanophase diamondlike carbon (DLC) and a-C:H carbon/hydrogen films with variable and controllable properties on the surface of a substrate is disclosed. The process utilizes a combined hydrocarbon ion beam and plasma-activated hydrocarbon gaseous radical flux produced by an end-Hall ion source to yield a film with good electron-emissivity characteristics or high hardness and good optical transparency, as desired. A second ion source providing a beam of argon ions above or together in nitrogen is optionally directed at the substrate for cleaning prior to deposition and for ion-assisted deposition during deposition or for doping.
摘要:
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Behandlung von Substratoberflächen, insbesondere der Beschichtung, dem Abtrag von Schichten oder von Teilen der Oberfläche und der Aktivierung für eine nachfolgende Beschichtung. Bei dem erfindungsgemäßen Verfahren wird:
a) Plasma mit einer Hohlkathoden-Glimmentladung im Vakuum erzeugt, b) ein Reaktivgasstrom in das zwischen dem substratseitigen Ende der Hohlkathode und dem Substrat vorhandene Plasma geführt, c) ein Inertgasstrom durch die Hohlkathode so geführt wird, daß die durch das Plasma angeregten Teilchen in Richtung auf das Substrat beschleunigt werden, und d) die Plasmabedingungen und/oder die Inertgasführung so eingestellt, daß eine Reaktion von Reaktivgas und Kathodenmaterial weitestgehend unterbunden wird.
摘要:
Für die Behandlung von Werkstücken mittels eines reaktiven Prozesses wird ein gebündelter Plasmastrahl (1) erzeugt und die zu behandelnden Werkstückoberflächen werden entlang einer zur Plasmastrahlachse (A) koaxialen Rotationsfläche (F) verteilt und zwar in einem Bereich, in welchem die Plasmadichte höchstens 20% der im Zentrum des Strahls vorherrschenden Plasmadichte beträgt.
摘要:
The present invention provides a magnetic recording medium that includes a polymeric flexible substrate and a magnetic layer coating thereon, with a binderless carbon rich layer adhered to the magnetic layer. The present invention also provides a process for the plasma deposition of the carbon rich coating onto a substrate comprising the steps of: a) providing a substrate in a vacuum chamber; b) generating carbon rich plasma in the vacuum chamber by injecting a plasma gas suitable to provide a carbon rich coating into an elongated hollow cathode; and providing a sufficient voltage to create and maintain plasma; and maintaining a vacuum in the vacuum chamber sufficient for the plasma; and c) exposing the substrate to the plasma while the magnetic medium is influenced by a radio frequency bias electrode to accelerate the plasma toward the substrate and deposit the carbon rich coating on the substrate.
摘要:
A silica thin film is formed by establishing an atmospheric pressure glow discharge beam plasma using an inert gas as a main gas, feeding a silane compound, typically tetramethoxysilane in vapor form to the plasma, and depositing a silica thin film on a substrate, typically a plastic film. The method enables to deposit a silica thin film of quality on various substrates in the ambient atmosphere, at relatively low temperatures and within a short time.
摘要:
Procédé de régulation de la qualité du dépôt de surfaces de visée et cible dans un appareil de dépôt chimique en phase vapeur activée au plasma. L'invention concerne également un appareil de régulation de la qualité du dépôt de surfaces de visée et cible dans un appareil de dépôt chimique en phase vapeur activée au plasma. L'appareil comprend un écran à plasma (6) doté d'une surface de visée (10) et d'une cible de plasma (7) comportant une surface cible. La surface de visée (10) définit un alésage (9) à travers l'écran à plasma (6) et n'est pas en contact direct avec un courant de plasma, tel que de l'oxygène, passant de la chambre de plasma (2), par l'intermédiaire de l'alésage (9), dans une chambre de réaction (3). Un échantillon à semiconducteur est monté sur un support (5) dans la chambre de réaction (3). La surface cible entoure l'échantillon. Les surfaces de visée et cible (10) sont maintenues à une température constante par circulation d'un milieu fluide dans les passages de fluide (11) se trouvant dans l'écran à plasma (6) et la cible de plasma (7). Ladite cible de plasma (7) peut comprendre une plaque amovible (33) sur une face de laquelle se trouve la surface cible. L'écran à plasma peut comprendre un anneau à gaz amovible (24) destiné à éjecter du gaz tel que SiH4 dans l'alésage.
摘要:
A process for forming diamond coatings is disclosed, in which a gas or a mixture of gases is passed through a low temperature silent discharge to generate a low temperature non-equilibrium plasma gas stream, the plasma gas stream is adiabatically expanded into a region of lover pressure to ford a plasma gas stream of highly ionized and dissociated gases, a carbon-containing gas is injected into the plasma gas stream during or after the expansion into a region of lower pressure, and the plasma gas stream is then directed onto the surface of a substrate to form the diamond coating.
摘要:
A process for forming diamond coatings is disclosed, in which a gas or a mixture of gases is passed through a low temperature silent discharge to generate a low temperature non-equilibrium plasma gas stream, the plasma gas stream is adiabatically expanded into a region of lover pressure to ford a plasma gas stream of highly ionized and dissociated gases, a carbon-containing gas is injected into the plasma gas stream during or after the expansion into a region of lower pressure, and the plasma gas stream is then directed onto the surface of a substrate to form the diamond coating.
摘要:
According to the invention there is provided a plasma-enhanced chemical vapour deposition (PE-CVD) apparatus comprising: a chamber comprising a circumferential pumping channel; a substrate support disposed within the chamber; one or more gas inlets for introducing gas into the chamber; a plasma production device for producing a plasma in the chamber; and an upper and a lower element positioned in the chamber; wherein: the upper element is spaced apart from the substrate support to confine the plasma and to define a first circumferential pumping gap, and the upper element acts as a radially inward wall of the circumferential pumping channel; and the upper and lower elements are radially spaced apart to define a second circumferential pumping gap which acts as an entrance to the circumferential pumping channel, in which the second circumferential pumping gap is wider than the first circumferential pumping gap.