Anti-oxidation method used for preparing magnesium alloy artificial bone by laser

A magnesium alloy, artificial bone technology, applied in the direction of metal material coating process, coating, etc., can solve the problem of easy oxidation, to prevent process, improve sintering performance and mechanical properties, magnesium alloy artificial bone sintering performance and mechanical properties Improved effect

Inactive Publication Date: 2017-01-18
CENT SOUTH UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of easy oxidation in the laser sintering process of magnesium alloy artificial bone, provide graphene to consume the residual oxygen in the protective atmosphere, and reduce the oxidized magnesium alloy, and at the same time use graphene as a nanophase to strengthen the magnesium alloy artificial bone

Method used

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Embodiment Construction

[0018] The specific embodiment of the present invention will be further described below in conjunction with an embodiment, but the content of the invention is not limited thereto.

[0019] 1) Mix 1 gram of graphene and 100 grams of Mg-Zn alloy powder in pure alcohol, then perform ultrasonic treatment, the ultrasonic power is 250w, the ultrasonic time is 10min, then filter and dry in a drying oven for 20h;

[0020] 2) The mixed powder obtained in step 1 is ball milled for 8 hours at a speed of 300 r / min under an argon protective atmosphere to obtain a composite powder of graphene and Mg-Zn;

[0021] 3) The composite powder obtained in step 2 is carried out under the conditions of a selective laser process with a laser spot diameter of 0.1mm, a powder coating thickness of 0.2mm, a laser power of 35W, and a scanning speed of 150mm / min under an argon protective atmosphere. Selective melting is to obtain magnesium alloy artificial bone reduced and enhanced by graphene.

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Abstract

The invention relates to an anti-oxidation method used for preparing a magnesium alloy artificial bone by laser, which solves the problem of easy oxidation during a magnesium alloy artificial bone laser sintering process, and provides graphene for consumption and protection of residual oxygen in atmosphere, and reduces the oxidized magnesium alloy, and graphene is used as the nano-phase enhanced magnesium alloy artificial bone. The method comprises the following steps: 1) mixing graphene and Mg-Zn alloy powder in straight alcohol and performing ultrasonic processing; 2) compositing powder and performing ball milling; and 3) performing selective laser fusing.

Description

technical field [0001] The invention relates to a method for preventing the oxidation of magnesium alloy in the process of laser preparation of bone scaffold by using the reduction characteristic and oxygen reaction characteristic of graphene, so as to improve the sintering performance and mechanical performance of magnesium alloy material, which belongs to the field of tissue engineering. Background technique [0002] In recent years, research on medical magnesium alloys has received special attention and attention. Compared with other biological materials, magnesium alloys have the following advantages: 1) Degradability. Magnesium alloys have a low corrosion potential and can be completely degraded in a corrosive manner in an in vivo environment; 2) biocompatibility. Magnesium is the fourth most abundant cation in the human body, can promote the proliferation and differentiation of bone cells, and is an indispensable and important nutritional element for the human body; 3)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10A61L27/30
Inventor 帅词俊彭淑平帅熊冯佩
Owner CENT SOUTH UNIV
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