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421results about How to "Bonded firmly" patented technology

Metal stent with surface layer of noble metal oxide and method of fabrication

In a process for producing a biocompatible stent, a tubular substrate of the stent adapted for diametric expansion has a layer of a noble metal oxide formed over at least the outer surface of greater diameter of the substrate, the substrate being composed of a metal or an alloy thereof that is non-noble or less-noble than the layer's noble metal. An interface region adapted to prevent corrosion and to provide a firm bond between the surface of the substrate and the noble metal oxide layer is established, at least in part, by forming the noble metal oxide layer with a progressively varying concentration of noble metal-to-oxide with depth of the layer such that a surface of pure noble metal and negligible oxide of the layer is in closest proximity to the surface of the substrate. In one embodiment of the process, the interface region is established by forming the surface of pure noble metal and negligible oxide thereof in direct contact with the metal or alloy of the substrate surface. In another, the interface region is established by first creating an oxide of the substrate metal or alloy thereof at the substrate surface, and then forming the noble metal oxide layer as above, but in contact with the substrate metal or alloy oxide. Alternatively, the noble metal oxide layer has no progressively varying concentration but simply overlies an oxide of the substrate metal or alloy.
Owner:BOSTON SCI SCIMED INC

Bracket for camera die set and camera die set

The invention discloses a bracket for a camera die set and the camera die set. The bracket comprises a bracket body; the bracket body comprises a first surface and a second surface which are oppositely arranged; a first concave groove and an annular boss are arranged on the first surface, wherein the annular boss is arranged around the outer side of the first concave groove; a second concave groove is formed in the second surface; through holes which pass through the first concave groove and the second concave groove are formed in the bracket body. According to the bracket for the camera die set, when a lens driving assembly is adhered on the part of the first surface, positioned at the outer side of the annular boss through an adhesive, excessive adhesive is difficult to flow to the first concave groove and a lens, so that the adhering firmness of the bracket and the lens driving assembly can be ensured, the adhesive can be prevented from adhering to a light filter and glass, and as a result, the light filtering performance of the light filter and the light transmission performance of the glass can be ensured, and the good imaging effect of the camera die set can be ensured; in addition, the lens is difficult to be adhered and fixed through excessive adhesive, and the focus of the lens can be normally adjusted.
Owner:NANCHANG O FILM OPTICAL ELECTRONICS TECH CO LTD +3

Bonding method, device formed by such method, surface activating unit and bonding apparatus comprising such unit

In a method of bonding objects to be bonded together in a solid phase at low temperature after subjecting bonding surfaces of the objects to be bonded to a hydrophilic treatment using a plasma, the objects to be bonded are conventionally handled in the atmospheric air for bonding, so that adhesion of organic substances in the atmospheric air leads to a reduction in bonding strength. Therefore, diffusion bonding needs to be performed at a temperature of as high as 1100° C. in the conventional art. According to the present invention, firm bond can be achieved at low temperature. In a method for bonding objects to be bonded together in a solid phase after subjecting bonding surfaces of the objects to be bonded to a hydrophilic treatment using a plasma, a chemical treatment step of subjecting both the objects to be bonded to the hydrophilic treatment using the plasma without exposure to the atmospheric air is performed after a physical treatment step of subjecting both the objects to be bonded to a physical treatment using an energy wave, such as an atom beam, an ion beam or a plasma, thereby bonding both the objects to be bonded together. Therefore, satisfactory bonding can be achieved without adhesion of organic substances or the like, thereby making it possible to achieve firm bond at a low temperature of 500° C. or less.
Owner:BONDTECH
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