Check patentability & draft patents in minutes with Patsnap Eureka AI!

A magnesium alloy with high medical performance

A magnesium alloy and performance technology, applied in the field of selective laser melting preparation process and heat treatment, can solve the problems of loss of mechanical integrity, corrosion resistance, poor wear resistance, etc., and achieve excellent mechanical compatibility and excellent biocompatibility. Effect

Active Publication Date: 2019-08-27
陕西智宇寰宸医疗器械有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, medical magnesium alloys have poor corrosion resistance and wear resistance as implants, resulting in too fast degradation rates, and the implants lose their mechanical integrity before the tissue heals.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A magnesium alloy with high medical performance
  • A magnesium alloy with high medical performance
  • A magnesium alloy with high medical performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Composition of the above alloy powder: 2% molybdenum; 1% tantalum; 0.5% chromium; 5% titanium; the rest is composed of magnesium and inevitable impurities such as C, S, and P. Pour the above powder into the miniature omnidirectional planetary ball mill F-P400E, and the rotation speed of the ball mill tank is 600r / min, so that the metal powder is fully mixed and ground.

[0035] 2. If figure 1 As shown, the selective laser ablation method

[0036] Use SLM Solutions 500 to process the mixed powder after ball milling obtained in step (1); SLM parameters include laser power of 110W, fiber laser spot size of 0.15mm, groove spacing of 0.10mm, powder layer thickness of 0.03mm; using 200mm / s scanning speed to prepare a cylindrical sample with a size of 10mm×5mm. The temperature rise rate in the SLM system is 10°C / s, input protective gas nitrogen, the concentration of nitrogen is 1800cc, rise to the preset temperature of 1200°C, keep warm for 4 hours, the protective gas is...

Embodiment 2

[0040] 1. Composition of the above alloy powder: 3% molybdenum; 2% tantalum; 1.5% chromium; 10% titanium; the rest is composed of magnesium and inevitable impurities such as C, S, and P. Pour the above powder into the miniature omni-directional planetary ball mill F-P400E, and the ball milling tank rotates at 700r / min to fully mix and grind the metal powder.

[0041] 2. If figure 1 As shown, the selective laser ablation method

[0042]SLM Solutions 500 was used to process the ball-milled mixed powder obtained in step (1); SLM parameters included laser power of 115W, spot size of 0.18mm, groove spacing of 0.11mm, and powder layer thickness of 00.4mm. Cylindrical samples with a size of 10 mm×5 mm were prepared at a scanning speed of 220 mm / s. The temperature rise rate in the SLM system is 15°C / s, input protective gas nitrogen, the concentration of nitrogen is 1800cc, rise to the preset temperature of 1300°C, and keep warm for 4.5 hours: the protective gas is: nitrogen for 1 ho...

Embodiment 3

[0046] 1. Composition of the above alloy powder: 4.5% molybdenum; 3% tantalum; 2.5% chromium; 10% titanium; the rest is composed of magnesium and inevitable impurities such as C, S, and P. Pour the above powder into the miniature omnidirectional planetary ball mill F-P400E, and the rotation speed of the ball mill tank is 750r / min, so that the metal powder is fully mixed and ground.

[0047] 2. If figure 1 As shown, the selective laser ablation method

[0048] Use SLM Solutions 500 to process the mixed powder after ball milling obtained in step (1); SLM parameters include laser power of 125W, spot size of 0.18mm, groove spacing of 0.11mm, and powder layer thickness of 0.06mm; using 250mm / s A cylindrical sample with a size of 10 mm × 5 mm was prepared at a scanning speed of 10 mm. The temperature rise rate in the SLM system is 35°C / s, input protective gas nitrogen, the concentration of nitrogen is 1800cc, rise to the preset temperature of 1450°C, and keep warm for 6 hours, in ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
elastic modulusaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a novel magnesium alloy with high medical performance. It is prepared by the following methods: ball milling and mixing of the magnesium alloy components; using German SLM Solutions 500 for selective laser melting; the magnesium alloy products after selective laser melting are subjected to 580-800°C for 1-3 hours Incomplete quenching, tempering at 200-280°C for 1.5-2.5 hours; finally cut into finished products. The invention adopts alloy powder components: molybdenum, tantalum, chromium and titanium all have good corrosion resistance and can enhance the corrosion resistance and tensile strength of the magnesium alloy.

Description

technical field [0001] The invention relates to an area-selective laser melting preparation process and a heat treatment method capable of enhancing the medical performance of magnesium alloys. Background technique [0002] Magnesium alloys have higher specific strength and specific stiffness, and are the lightest metal structural materials. The elastic modulus of Mg and its alloys is about 45GPa, which is closer to human cortical bone than other medical metal materials by 17-20GPa, and can avoid stress. Occlusion effect; Mg density (1.74g / cm3) is also very close to human bone (1.75g / cm3). Mg Released from Magnesium Alloys in Human Body 2+ It can promote the growth, proliferation and differentiation of osteoblasts, and accelerate the healing of injured bone tissue. [0003] Bone implant materials such as cardiovascular stents, bone nails, and bone plates in the human body need to be naturally degraded after the injured body is repaired. Compared with the traditional titan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/00C22C1/04C22F1/06B22F3/105B33Y10/00B33Y70/00
CPCC22C1/0408C22C23/00C22F1/002C22F1/06B33Y10/00B33Y70/00B22F10/00B22F10/36B22F10/64B22F10/28B22F10/32Y02P10/25
Inventor 鄢腊梅袁友伟
Owner 陕西智宇寰宸医疗器械有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com