Preparation method for controllable degradation type zinc-magnesium gradient material

A gradient material, zinc-magnesium technology, applied in the preparation and application of medical biomaterials, can solve the problem that it is difficult to meet the diversity of degradable implant materials

Active Publication Date: 2019-11-15
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to develop a controllable degradable zinc-magnesium gradient material combining different characteristics and functions for the problem that a single homogeneous material is difficult to meet the application requirements of the diversity of degradable implant materials

Method used

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  • Preparation method for controllable degradation type zinc-magnesium gradient material
  • Preparation method for controllable degradation type zinc-magnesium gradient material
  • Preparation method for controllable degradation type zinc-magnesium gradient material

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Embodiment Construction

[0070] The present invention will be further described below in conjunction with accompanying drawing:

[0071] figure 1 As shown in ., it is the state diagram of spark plasma sintering of magnesium-zinc gradient mixed powder. It is necessary to connect all parts correctly and operate in sequence.

[0072] Quantities of chemicals used in preparation determined in pre-set ranges in grams, milliliters, microns, moles / liter, centimeters 3 is the unit of measurement.

[0073] The sintering of the magnesium-zinc gradient mixed powder is carried out in the spark plasma sintering furnace protected by argon gas, and is completed during the heating process of the discharge plasma;

[0074] The discharge plasma sintering furnace is vertical, including a vacuum sintering furnace 1, the lower part of the vacuum sintering furnace 1 is a base 3, the upper part is a top seat 2, and the interior is a furnace cavity 39; Vacuum pump 6, water tank 8; Vacuum tube 7 is provided on the top of va...

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Abstract

The invention relates to a preparation method for a controllable degradation type zinc-magnesium gradient material, belongs to the technical field of preparation and application of medical biomaterials. According to the preparation method, the problem that a single homogeneous material can hardly meet the application requirement of the diversity of a degradable implant material can be solved, magnesium powder and zinc powder serve as raw materials, and the controllable degradation type zinc-magnesium gradient material is developed through a preparation technology of powder preparation, ball-milling and powder mixing, powder laying, pre-pressing forming and spark plasma sintering; the density of the material is 3.58 g / cm<3>, the compactness reaches 98.2%, the compressive strength is about 261 MPa, the bending strength is 114 MPa, the bending modulus is 7.1 GPa, the material is matched with bone tissue of a human body in performance, the stress shielding effect can be effectively avoided, and the performance requirement of a hard tissue implant of the human body can be met; and meanwhile, the gradient material is soaked and corroded, has good corrosion resistance at the early stage and has the characteristic of obviously increased corrosion rate in the later stage, and the unique functional requirements that the outer layer material is corrosion-resistant at the initial stage ofimplantation, can ensure the mechanical property and is rapidly degraded in the later stage of implantation can be met.

Description

technical field [0001] The invention relates to a preparation method of a controllable degradable zinc-magnesium gradient material, which belongs to the technical field of preparation and application of medical biological materials. Background technique [0002] The support material for hard tissue structure repair is a kind of biological material with early development, mature technology and deep research. It is usually used as a bone filling material to reconstruct the defective part of human bone tissue, and it is very effective in restoring the physiological functions of pathological and traumatic bone defects. Traditional support materials for hard tissue repair are mainly titanium alloys, stainless steel, cobalt-based alloys, and pure metals (tantalum, niobium), all of which have good corrosion resistance, but long-term implantation in the human body will also cause many adverse effects. The elastic modulus of titanium alloy and stainless steel is much higher than tha...

Claims

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Application Information

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IPC IPC(8): B22F3/105B22F7/02B22F3/03B22F9/04C22C18/00C22C23/04C22C1/04A61L27/58A61L27/04
CPCB22F3/105B22F7/02B22F9/04C22C18/00C22C23/04B22F3/03C22C1/0408C22C1/0483A61L27/047A61L27/58B22F2009/043A61L2430/02
Inventor 崔泽琴罗梦达张亚凯韩晓强宫殿清王文先
Owner TAIYUAN UNIV OF TECH
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