A kind of high-density substructure magnesium alloy, preparation method and application thereof

Abstract

The invention belongs to the field of metal materials, and discloses a high-density substructure magnesium alloy, a preparation method and an application thereof; the magnesium alloy composition mass percentages are: calcium: 0.01-4.5%, copper: 0.005-5.0%, zinc: 0.018 -4.5%, the rest is magnesium, added elements and unavoidable impurities, said added elements are one or any combination of silver, tin, strontium, the mass percentage of the added amount is: silver: 0-1.5%, tin: 0‑2.0%, strontium: 0‑0.5%. The preparation method includes: melting under the protection of atmosphere, and then pouring into ingots; extruding the heated ingots into profiles with different cross-sectional shapes; Spinning and impacting passivates the corners of the surface of the columnar or bulk material, forming a high-density substructure inside the magnesium alloy. The aqueous solution formed by the reaction of the magnesium alloy with water can be used to remove mites, remove peculiar smell, remove sour and fishy smell, sterilize and inhibit bacteria, and remove stains. The invention has simple process and is suitable for popularization and application.

Description

technical field

[0001] The invention relates to the field of metal materials, in particular to a high-density substructure magnesium alloy, a preparation method and an application thereof. Background technique

[0002] Magnesium alloy has the advantages of low density, high specific strength, degradable absorption, excellent biocompatibility, and easy processing and molding. It is a typical structural and functional material and is known as a new green metal material. At present, most magnesium alloys are used as structural materials, especially in the field of lightweight. Magnesium alloys also have good potential as biomedical materials. However, the corrosion resistance of pure magnesium or magnesium alloys is poor, for example, magnesium can chemically react with water, especially when it exists in the form of solid particles, it is difficult to effectively control the reaction rate. The research on regulating the reaction rate of magnesium alloys and water is mainly c...

Examples

Embodiment 1

[0024] Take the Mg-0.01Ca-0.005Cu-1.0Zn-0.01Sn alloy as an example (according to the composition mass percentage: Ca: 0.01%, Cu: 0.005%, Zn: 1.0%, Sn: 0.01%, the sum of unavoidable impurities ≤ 0.05%, the balance is magnesium), and its preparation method is as follows:

[0025] (1) Under the protection of argon, add pure magnesium, magnesium-calcium intermediate alloy, pure copper and pure zinc in sequence, heat and melt at 680-730°C; then add pure tin, stir evenly at 670-710°C, and blow Injecting high-purity argon gas and refining degassing, after cleaning the slag, the alloy liquid is obtained;

[0026] (2) casting the molten alloy obtained in step (1) into an ingot by semi-continuous casting;

[0027] (3) After the surface of the ingot obtained in step (2) is turned and peeled, it is heated to 320-330° C. under the protection of argon and kept for 3 hours;

[0028] (4) Extrude the heated ingot obtained in step (3) into extrusion profiles of different cross-sectional shape...

Embodiment 2

[0032] Take the Mg-0.8Ca-0.03Cu-0.018Zn-0.02Sr alloy as an example (according to the composition mass percentage: Ca: 0.8%, Cu: 0.03%, Zn: 0.018%, Sr: 0.02%, the sum of unavoidable impurities ≤ 0.05%, the balance is magnesium), and its preparation method is as follows:

[0033] (1) Under the protection of argon, add pure magnesium, magnesium-calcium master alloy, pure copper and pure zinc in turn, heat and melt at 700-730°C; then add magnesium-strontium master alloy, and stir evenly at 690-710°C , and blowing high-purity argon gas and refining degassing, after cleaning the slag, the alloy liquid is obtained;

[0034] (2) casting the molten alloy obtained in step (1) into an ingot by manual casting;

[0035] (3) After turning and peeling the surface of the ingot obtained in step (2), heating it to 400-420° C. under nitrogen protection and keeping it warm for 10 hours;

[0036] (4) Extrude the heated ingot obtained in step (3) into extrusion profiles of different cross-section...

Embodiment 3

[0039] Take the Mg-0.1Ca-0.1Cu-0.5Zn-0.02Ag alloy as an example (according to the composition mass percentage: Ca: 0.1%, Cu: 0.1%, Zn: 0.5%, Ag: 0.02%, the sum of unavoidable impurities ≤ 0.05%, the balance is magnesium), and its preparation method is as follows:

[0040](1) Under the protection of argon, add pure magnesium, magnesium-calcium intermediate alloy, pure copper and pure zinc in sequence, heat and melt at 680-730°C; then add pure silver, stir evenly at 680-700°C, and blow Injecting high-purity argon gas and refining degassing, after cleaning the slag, the alloy liquid is obtained;

[0041] (2) casting the molten alloy obtained in step (1) into an ingot by semi-continuous casting;

[0042] (3) After turning and peeling the surface of the ingot obtained in step (2), heating it to 340-350° C. under nitrogen protection and keeping it warm for 8 hours;

[0043] (4) Extrude the heated ingot obtained in step (3) at 340° C. into extruded profiles of different cross-secti...

technical field

[0001] The invention relates to the field of metal materials, in particular to a high-density substructure magnesium alloy, a preparation method and an application thereof. Background technique

[0002] Magnesium alloy has the advantages of low density, high specific strength, degradable absorption, excellent biocompatibility, and easy processing and molding. It is a typical structural and functional material and is known as a new green metal material. At present, most magnesium alloys are used as structural materials, especially in the field of lightweight. Magnesium alloys also have good potential as biomedical materials. However, the corrosion resistance of pure magnesium or magnesium alloys is poor, for example, magnesium can chemically react with water, especially when it exists in the form of solid particles, it is difficult to effectively control the reaction rate. The research on regulating the reaction rate of magnesium alloys and water is mainly c...

Examples

Embodiment 1

[0024] Take the Mg-0.01Ca-0.005Cu-1.0Zn-0.01Sn alloy as an example (according to the composition mass percentage: Ca: 0.01%, Cu: 0.005%, Zn: 1.0%, Sn: 0.01%, the sum of unavoidable impurities ≤ 0.05%, the balance is magnesium), and its preparation method is as follows:

[0025] (1) Under the protection of argon, add pure magnesium, magnesium-calcium intermediate alloy, pure copper and pure zinc in sequence, heat and melt at 680-730°C; then add pure tin, stir evenly at 670-710°C, and blow Injecting high-purity argon gas and refining degassing, after cleaning the slag, the alloy liquid is obtained;

[0026] (2) casting the molten alloy obtained in step (1) into an ingot by semi-continuous casting;

[0027] (3) After the surface of the ingot obtained in step (2) is turned and peeled, it is heated to 320-330° C. under the protection of argon and kept for 3 hours;

[0028] (4) Extrude the heated ingot obtained in step (3) into extrusion profiles of different cross-sectional shape...

Embodiment 2

[0032] Take the Mg-0.8Ca-0.03Cu-0.018Zn-0.02Sr alloy as an example (according to the composition mass percentage: Ca: 0.8%, Cu: 0.03%, Zn: 0.018%, Sr: 0.02%, the sum of unavoidable impurities ≤ 0.05%, the balance is magnesium), and its preparation method is as follows:

[0033] (1) Under the protection of argon, add pure magnesium, magnesium-calcium master alloy, pure copper and pure zinc in turn, heat and melt at 700-730°C; then add magnesium-strontium master alloy, and stir evenly at 690-710°C , and blowing high-purity argon gas and refining degassing, after cleaning the slag, the alloy liquid is obtained;

[0034] (2) casting the molten alloy obtained in step (1) into an ingot by manual casting;

[0035] (3) After turning and peeling the surface of the ingot obtained in step (2), heating it to 400-420° C. under nitrogen protection and keeping it warm for 10 hours;

[0036] (4) Extrude the heated ingot obtained in step (3) into extrusion profiles of different cross-section...

Embodiment 3

[0039] Take the Mg-0.1Ca-0.1Cu-0.5Zn-0.02Ag alloy as an example (according to the composition mass percentage: Ca: 0.1%, Cu: 0.1%, Zn: 0.5%, Ag: 0.02%, the sum of unavoidable impurities ≤ 0.05%, the balance is magnesium), and its preparation method is as follows:

[0040](1) Under the protection of argon, add pure magnesium, magnesium-calcium intermediate alloy, pure copper and pure zinc in sequence, heat and melt at 680-730°C; then add pure silver, stir evenly at 680-700°C, and blow Injecting high-purity argon gas and refining degassing, after cleaning the slag, the alloy liquid is obtained;

[0041] (2) casting the molten alloy obtained in step (1) into an ingot by semi-continuous casting;

[0042] (3) After turning and peeling the surface of the ingot obtained in step (2), heating it to 340-350° C. under nitrogen protection and keeping it warm for 8 hours;

[0043] (4) Extrude the heated ingot obtained in step (3) at 340° C. into extruded profiles of different cross-secti...