摘要:
An adhesive (B) of solvent containing adhesive as a suspension of low viscosity is prepared by adding a solvent MIBK to a one-part epoxy adhesive of a dicyandiamide-curable type (A). Metal shaped articles (M1 to M5) as adherends are prepared each of which, through various surface treatment, has specific surface configuration of roughened face and/or ultrafine irregularities and the surface is entirely covered with a thin layer of ceramics such as a metal oxide or metal phosphate. The specified face of each metal shaped article (M1 to M5) is painted with the solvent containing adhesive (B). The faces painted with the adhesive of two metal shaped articles (M1 to M5) are caused to abut each other, the articles are heated to cure the one-epoxy adhesive to accomplish adhesion. With one of the adherends replaced by a CFRP shaped article (P2), a composite of a metal and CFRP can be formed.
摘要:
An adhesive (B) of solvent containing adhesive as a suspension of low viscosity is prepared by adding a solvent MIBK to a one-part epoxy adhesive of a dicyandiamide-curable type (A). Metal shaped articles (M1 to M5) as adherends are prepared each of which, through various surface treatment, has specific surface configuration of roughened face and/or ultrafine irregularities and the surface is entirely covered with a thin layer of ceramics such as a metal oxide or metal phosphate. The specified face of each metal shaped article (M1 to M5) is painted with the solvent containing adhesive (B). The faces painted with the adhesive of two metal shaped articles (M1 to M5) are caused to abut each other, the articles are heated to cure the one-epoxy adhesive to accomplish adhesion. With one of the adherends replaced by a CFRP shaped article (P2), a composite of a metal and CFRP can be formed.
摘要:
The present invention relates to a surface-treated substrate having excellent corrosion resistance and capable of developing color on the surface, and to a substrate surface treatment method for same. The surface-treated substrate, according to the present invention, comprises a coating having a uniform thickness on a metal matrix, thereby improving corrosion resistance and evenly developing color on the surface. Also, by comprising a wavelength conversion layer and a top coat, in order, on top of the coating, the advantage of improving scratch resistance and durability of the substrate without discoloring of the achieved color can be provided.
摘要:
The present invention relates to a bioactive material and to a method of producing a bioactive material which is suitable for use as an implant or for use as a bone substitute for repairing bone.
摘要:
Purpose: The object of the present invention is to provide an anti-thrombogenic material and a manufacturing method therefor permitting to surely treat a blood contact surface of complex shapes, and moreover, permitting to suppress not only generation of fibrin induced by a blood coagulation factor such as fibrinogen on the blood contact surface but also both of the adhesion and activation of platelets. Means for solving the Problems: A porous layer made of alkaline titanate and having an irregular pore structure is formed on the surface of a substrate of pure titanium or a titanium alloy by immersing the substrate of pure titanium or a titanium alloy in an alkaline solution.
摘要:
A biocompatible titanium implant with a modified exterior surface having a covering layer that comprises a hydrated titania gel. The exterior surface of the titanium implant is processed by a hydrogen peroxide aqueous solution that contains metal ions which not only promotes a reaction between the titanium implant and the hydrogen peroxide aqueous solution but also provides a high apatite formation ability to the hydrated titania gel on the surface of the implant.
摘要:
A modified alkaline peroxide pre-bond process for the surface treatment of titanium is useful as a practical production process. In this modified process, an exceptionally wide range of allowable peroxide concentration, namely, from 0.001 molar to 0.2 molar (and preferably 0.001 molar to 0.01 molar) may be tolerated and a novel real-time peroxide monitoring and control technique is employed. The process is further improved by means of the use of stabilizers such as precipitated magnesium silicate which greatly increases bath life-time and reduces the overall operating cost of the process. Solution operating conditions have been defined which permit titanium adherends to be processed satisfactorily over a wide range of hydrogen peroxide concentration. In particular, the acceptable temperature range is 125.degree. F.-165.degree. F. (51.7.degree. C.-73.8.degree. C.); the treatment period is 15 to 25 minutes and the hydroxide concentration is 0.3 to 0.9 molar. The preferred values are approximately 145.degree. F. (62.7.degree. C.); 20 minutes, and 0.5 molar, respectively. An electrochemical method has been established utilizing a magnesium electrode (114) which provides a stable potential characteristic that is dependent only on the concentration of the peroxide. The resultant capability to reliably monitor the peroxide concentration in real time in turn permits an automated feed system to be effectively utilized for sustaining the peroxide concentration within the desired limits.
摘要:
A modified alkaline peroxide pre-bond process for the surface treatment of titanium is useful as a practical production process. In this modified process, an exceptionally wide range of allowable peroxide concentration, namely, from 0.001 molar to 0.2 molar (and preferably 0.001 molar to 0.01 molar) may be tolerated and a novel real-time peroxide monitoring and control technique is employed. The process is further improved by means of the use of stabilizers such as precipitated magnesium silicate which greatly increases bath life-time and reduces the overall operating cost of the process. Solution operating conditions have been defined which permit titanium adherends to be processed satisfactorily over a wide range of hydrogen peroxide concentration. In particular, the acceptance temperature range is 125.degree. F.-165.degree. F. (51.7.degree. C.-73.8.degree. C.); the treatment period is 15 to 25 minutes and the hydroxide concentration is 0.3 to 0.9 molar. The preferred values are approximately 145.degree. F. (62.7.degree. C.); 20 minutes, and 0.5 molar, respectively. An electromechanical method has been established utilizing a magnesium electrode (114) which provides a stable potential characteristic that is dependent only on the concentration of the peroxide. The resultant capability to reliably monitor the peroxide concentration in real time in turn permits an automated feed system to be effectively utilized for sustaining the peroxide concentration within the desired limits.
摘要:
PARTS FORMED OF TITANIUM OR OTHER GROUP IV TRANSITIONAL SUB-GROUP METALS AND THEIR ALLOYS ARE PREPARED FOR ELECTROPLATING, ANODIZING, PAINTING, ADHESIVE BONDING, AND OTHER SURFACE PROCESSING BY IMMERSING SAID METALS IN A HOT AQUEOUS SOLUTION CONTAINING A HYDROXIDE OF AN ALKALI METAL, A CHELATING AGENT, AND AT LEAST ONE OF THE THREE TRIHYDROXYBENZENES OR ONE OF THE METHYL SUBSTITUTED ALPHA OR BETA NAPHTHOLS.
摘要:
Provided is a color-treated substrate and a substrate color treatment method therefor. The color-treated substrate includes a carbon layer and can thus implement the high hardness and various colors of a metal substrate, and includes an interlayer containing metal hydroxide to enhance contacting force between the carbon layer and the metal substrate, and thus has excellent durability and excellent corrosion resistance.