Biodegradable Mg-Zn-Cu laminar composite and preparing method thereof

A layered composite material, mg-zn-cu technology, applied in the field of biodegradable Mg-Zn-Cu layered composite materials and its preparation, can solve the problems of slow degradation, fast corrosion, high elastic modulus, etc., to achieve Ease of mass production, low cost, good mechanical properties and corrosion resistance

Inactive Publication Date: 2019-09-13
珠海中科先进技术研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] One of the embodiments of the present invention provides a biodegradable Mg-Zn-Cu layered composite material, which has an outer layer, a middle layer and an inner layer connected in sequence, the outer layer is a copper alloy, and the middle layer is Zinc alloy, the inner layer is magnesium alloy, and the composite material includes the following components in volume percentage: 10% to 25% of the copper alloy, 20% to 35% of the zinc alloy, and the balance is the magnesium alloy. Solved the problems of excessive corrosion, slow degradation and high elastic modulus of a single metal material in the prior art

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  • Biodegradable Mg-Zn-Cu laminar composite and preparing method thereof
  • Biodegradable Mg-Zn-Cu laminar composite and preparing method thereof
  • Biodegradable Mg-Zn-Cu laminar composite and preparing method thereof

Examples

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Embodiment 1

[0068] This example provides a biodegradable Mg-Zn-Cu layered composite material, which has an outer layer, a middle layer and an inner layer connected in sequence, the outer layer is a copper alloy, and the middle layer is a zinc alloy. The inner layer is a magnesium alloy, and the composite material includes the following components in volume percentage:

[0069] 10-25% of the copper alloy,

[0070] 20-35% of the zinc alloy,

[0071] The balance is the magnesium alloy.

[0072] The composite material in this example has a total of 3-layer structure, namely the inner layer, the middle layer and the outer layer. The form of the 3-layer structure makes the composite material have a more complete functional level, and each layer in the composite material is made of alloy , Compared with pure metals, alloys have better performance and use effects. The elements used in each layer alloy of the composite material of the present application are Ca, Zr and Sr, and each layer alloy ...

Embodiment 2

[0074] This example provides a biodegradable Mg-Zn-Cu layered composite material, which has an outer layer, a middle layer and an inner layer connected in sequence, the outer layer is a copper alloy, and the middle layer is a zinc alloy. The inner layer is a magnesium alloy, and the composite material includes the following components in volume percentage:

[0075] 10-25% of the copper alloy, 20-35% of the zinc alloy and the rest of the magnesium alloy.

[0076] Wherein, the copper alloy includes at least one alloying element in Ca, Zr and Sr, specifically:

[0077] Ca 0.1-3.5%, and / or Zr 0.1-1.5%, and / or Sr 0.1-5.0%, and the balance is Cu.

[0078] As a preferred version, the copper alloy comprises the following components in mass percent:

[0079] Ca 0.3-0.8%, Zr 0.3-0.8%, Sr 1.0-2.0%, and the balance is Cu.

[0080] Zinc alloys include at least one alloying element of Ca, Zr and Sr, specifically:

[0081] Ca 0.1-3.5%, and / or Zr 0.1-1.5%, and / or Sr 0.1-5.0%, and the bala...

Embodiment 3

[0089] This example provides the preparation method of biodegradable Mg-Zn-Cu layered composite material, and the steps include:

[0090] After melting the zinc alloy, casting it into the copper alloy hollow round ingot to obtain a Zn-Cu composite material round ingot;

[0091] Processing the Zn-Cu composite ingot into a Zn-Cu hollow ingot;

[0092] After melting the magnesium alloy, casting it into the Zn-Cu hollow round ingot to obtain a Mg-Zn-Cu composite material round ingot;

[0093] The Mg-Zn-Cu composite ingot is hot-extruded and then annealed to obtain the biodegradable Mg-Zn-Cu layered composite material.

[0094] Among them, the preparation method of the copper alloy hollow round ingot is as follows: under vacuum conditions, argon gas is introduced as a protective atmosphere, the copper alloy is heated to 550-650 ° C, melted, mechanically stirred for 5-10 minutes, and then allowed to stand for 3-5 minutes. Then cast it into a stainless steel mold at 600°C to obtain...

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Abstract

The embodiment of the invention provides biodegradable Mg-Zn-Cu laminar composite and a preparing method thereof. The composite is provided with an outer layer, a middle layer and an inner layer whichare connected in sequence. The outer layer is copper alloy, the middle layer is zinc alloy, the inner layer is magnesium alloy, and the composite comprises, by volume percent, 10 to 25% of copper alloy, 20 to 35% of zinc alloy and the balance magnesium alloy. The problem that in the prior art, a single metal material is too fast in corrosion, slow in degradation and too high in elasticity modulusis solved. The composite has the excellent biocompatibility, good mechanical property and good corrosion resistance and has the long-acting antibacterial function. The composite has the important application value in the medical implant material field. The invention further provides a preparing method of the biodegradable Mg-Zn-Cu laminar composite.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a biodegradable Mg-Zn-Cu layered composite material and a preparation method thereof. Background technique [0002] At present, the common clinical medical implants are mainly made of inert metal materials such as stainless steel, nickel-titanium alloy, and cobalt-chromium alloy. After implanted into the human body, such metal materials will permanently exist as foreign bodies, which will produce toxic ion precipitation, Vascular intimal hyperplasia, local inflammatory response, mechanical stretch injury and stress shielding effect and other issues. In view of the above reasons, researchers have developed a biodegradable magnesium alloy, which has the following significant advantages: (1) Good biocompatibility. The magnesium ions released by the magnesium alloy during the degradation process can not only supplement the magnesium element for the normal ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C18/00C22C23/00C22C1/02C22F1/08C22F1/16C22F1/06B32B15/01B32B37/06B32B37/10B32B37/14B32B38/18
CPCB32B15/01B32B37/06B32B37/10B32B37/14B32B38/1816B32B38/1858B32B2038/0048B32B2250/03B32B2307/7145B32B2307/7163B32B2535/00C22C1/02C22C9/00C22C18/00C22C23/00C22F1/06C22F1/08C22F1/165
Inventor 马国睿吴锋
Owner 珠海中科先进技术研究院有限公司
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