# US 2013/0157006 A1 · Method for making magnesium/magnesium alloy-and-resin composite and magnesium/magnesium alloy-and-resin composite thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0157006 A1 - Document ID: US20130157006A1 - Status: Published application - Kind: A1 - Application number: 13/414,144 - Filed: 2012-03-07 - Published: 2013-06-20 - Earliest claimed: 2011-12-15 - Assignees: Hon Hai Precision Industry Co., Ltd.; HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD. - Inventors: CHENG-SHI CHEN; DAI-YU SUN; YUAN-YUAN FENG; KONG-TING LI - Web page: https://patentgrep.com/patent/US20130157006A1 ## CPC - B29C 45/14311: {using means for bonding the coating to the articles (B29C45/14795 takes precedence)} - C25F 3/02: Etching - B29C 2045/14803: {the injected material entering minute pores} - Y10T 428/24355: Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] - Y10T 428/24997: Of metal-containing material - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - C25F: PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A magnesium/magnesium alloy-and-resin composite includes a magnesium/magnesium alloy substrate, and at least a resin composition coupled to a surface of the substrate. The surface of the substrate is formed with a plurality of pores having a diameter having a range of about 70 nm-400 nm and a depth having a range of about 60 nm-800 nm. The resin composition contains crystalline thermoplastic synthetic resins. A method for making the magnesium/magnesium alloy-and-resin composite is also described. ## Claims ### Claim 1 A magnesium/magnesium alloy-and-resin composite, comprising: a magnesium/magnesium alloy substrate, a surface of the substrate being formed with a plurality of pores having a diameter having a range of about 70 nm-400 nm and a depth having a range of about 60 nm-800 nm; and at least a resin composition coupled to the surface of the substrate, the resin composition containing crystalline thermoplastic synthetic resins. ### Claim 2 (depends on 1) The composite as claimed in claim 1, wherein the surface of the substrate is a roughened surface having a coral reef like structure. ### Claim 3 (depends on 1) The composite as claimed in claim 1, wherein the resin composition fills the pores of the substrate. ### Claim 4 (depends on 1) The composite as claimed in claim 1, wherein the resin composition is a molded crystalline thermoplastic synthetic resin composition. ### Claim 5 (depends on 1) The composite as claimed in claim 1, wherein the crystalline thermoplastic synthetic resin is polyphenylene sulfide containing fiberglass. ### Claim 6 A method for making a magnesium/magnesium alloy-and-resin composite, comprising: providing a magnesium/magnesium alloy substrate; chemically etching the substrate using sodium carbonate water solution and citrate hydrate water solution respectively to rough a surface of the substrate and form a plurality of recesses in the surface; electrochemically treating the substrate using a water solution containing sodium silicate, potassium hydroxide, and citric acid to form a plurality of pores in the surface, the pores having a diameter having a range of about 70 nm-400 nm and a depth having a range of about 60 nm-800 nm; and inserting the substrate in a mold and molding crystalline thermoplastic synthetic resin on the surface of the substrate to form the composite. ### Claim 7 (depends on 6) The method as claimed in claim 6, wherein electrochemically treating the substrate is carried out in the water solution for about 9 minutes-18 minutes with the substrate being an anode, a stainless steel board being a cathode, the mass concentration of the sodium silicate is about 20 g/L-50 g/L, the mass concentration of the potassium hydroxide is about 10 g/L-40 g/L, and the mass concentration of the citric acid is about 5 g/L-20 g/L, electric current density through the water solution is about 0.2 mA/cm2-0.5 mA/cm2. ### Claim 8 (depends on 6) The method as claimed in claim 6, wherein the sodium carbonate water solution has a mass concentration of about 1%-5%. ### Claim 9 (depends on 6) The method as claimed in claim 6, wherein the citrate hydrate water solution has a mass concentration of about 0.1%-0.5%. ### Claim 10 (depends on 6) The method as claimed in claim 6, wherein the crystalline thermoplastic synthetic resin is polyphenylene sulfide containing fiberglass. ### Claim 11 (depends on 6) The method as claimed in claim 6, wherein the surface of the substrate is roughened and forms a coral reef like structure after the electrochemical treating process. ### Claim 12 (depends on 6) The method as claimed in claim 6, wherein the crystalline thermoplastic synthetic resin fills the pores of the substrate. ### Claim 13 A magnesium/magnesium alloy-and-resin composite, comprising: a magnesium/magnesium alloy substrate, a surface of the substrate being formed with a plurality of pores having a diameter having a range of about 70 nm-400 nm and a depth having a range of about 60 nm-800 nm; and at least a molded resin composition coupled to the surface of the substrate, the resin composition containing crystalline thermoplastic synthetic resins.