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Preparation method and application of titanium boride alloy/hydroxyapatite composite material

A technology of hydroxyapatite and composite materials, applied in medical science, prosthesis, tissue regeneration, etc., can solve the problems of thermal expansion coefficient mismatch, affecting mechanical properties, insufficient biological activity, etc., to achieve enhanced mechanical properties and enhanced corrosion resistance Performance, effect of good biological activity

Inactive Publication Date: 2020-05-08
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, even the titanium alloy / HA composite material prepared by sintering technology still has the following deficiencies: 1. During the sintering process, due to the high temperature, HA decomposes, resulting in insufficient biological activity. Titanium alloy and HA, which is a ceramic material, have the problem of thermal expansion coefficient mismatch, which affects its mechanical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Take a certain amount of Ti6Al4V, HA, and TiB 2 Powder, according to mass ratio 87.5%Ti6Al4V+7.5%HA+5%TiB 2 The ratio is mixed, and 2% stearic acid is added as a binder. Put the above powders into a vacuum ball milling tank in turn, add grinding balls in sequence according to the ball-to-material ratio of 10:1, vacuumize the ball milling tank in a sealed state, fill it with argon for protection, and put it into a planetary ball mill for ball milling. For 12 hours, the rotating speed is 200r / min. After ball milling, take the powder in a vacuum glove box, press it with a precision servo hydraulic press, the pressure is 900Mpa, and the holding time is 90s, and press it into a small cylindrical green body with a specification of Φ8mm×10mm. Put the pressed cylindrical green body into a high-temperature calcination tube furnace for slow degreasing. The degreasing rate is 3°C / min, slowly rise to 380°C, and maintain for 2h under the protection of a high-purity argon atmospher...

Embodiment 2

[0052] Take a certain amount of Ti6Al4V, HA, and TiB 2 Powder, according to mass ratio 90%Ti6Al4V+5%HA+5%TiB 2 The ratio is mixed, and 2% stearic acid is added as a binder. Put the above powders into a vacuum ball milling tank in turn, add grinding balls in sequence according to the ball-to-material ratio of 10:1, vacuumize the ball milling tank in a sealed state, fill it with argon for protection, and put it into a planetary ball mill for ball milling. For 12 hours, the rotating speed is 200r / min. After ball milling, take the powder in a vacuum glove box, press it with a precision servo hydraulic press, the pressure is 900Mpa, and the holding time is 90s, and press it into a small cylindrical green body with a specification of Φ8mm×10mm. Put the pressed cylindrical green body into a high-temperature calcination tube furnace for slow degreasing. The degreasing rate is 3°C / min, slowly rise to 380°C, and maintain for 2h under the protection of a high-purity argon atmosphere, s...

Embodiment 3

[0055] Take a certain amount of Ti6Al4V, HA, and TiB 2 Powder, according to mass ratio 90%Ti6Al4V+5%HA+5%TiB 2 The ratio is mixed, and 2% stearic acid is added as a binder. Put the above powders into a vacuum ball milling tank in turn, add grinding balls in sequence according to the ball-to-material ratio of 10:1, vacuumize the ball milling tank in a sealed state, fill it with argon for protection, and put it into a planetary ball mill for ball milling. For 12 hours, the rotating speed is 200r / min. After ball milling, take the powder in a vacuum glove box, press it with a precision servo hydraulic press, the pressure is 900Mpa, and the holding time is 90s, and press it into a small cylindrical green body with a specification of Φ8mm×10mm. Put the pressed cylindrical green body into a high-temperature calcination tube furnace for slow degreasing. The degreasing rate is 3°C / min, slowly rise to 380°C, and maintain for 2h under the protection of a high-purity argon atmosphere, s...

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Abstract

The invention discloses a preparation method and application of a titanium boride alloy / hydroxyapatite composite material. By taking a titanium aluminum vanadium alloy (Ti6Al4V), nano-hydroxyapatite (HA) and titanium boride (TiB2) powder as a raw material and adding stearic acid as a bonder, the titanium boride alloy / hydroxyapatite composite material is prepared by ball-milling and mixing the powder uniformly, pressing and forming the powder and degreasing the powder by applying a microwave sintering process. By regulating the mass proportion and the sintering parameters (including sintering temperature, time, atmosphere and the like) of raw material components, mechanical properties (including compressive strength, hardness, volume density, and the elasticity modulus, porosity, contact angle and the like are reduced), biological activity and bone bonding property of a compound implant material are improved. The preparation method disclosed by the invention has various advantages of low production cost, simple process, environment-friendliness and the like. It is ensured that a compound implant material also has bioactivity while having mechanical properties, so that good bone bonding is formed between the compound implant material and a human bone tissue.

Description

technical field [0001] The invention belongs to the field of oral implant materials, and in particular relates to a preparation method and application of a titanium boride alloy / hydroxyapatite composite material. Background technique [0002] Pure titanium and titanium alloys are widely used in dental implant restoration due to their good mechanical properties, biocompatibility, and stable chemical properties. However, the surface of pure titanium is biologically inert, and its combination with bone is in a mechanically locked state. After being implanted into the body, it will cause non-specific immunity of the body, and even cause problems such as long healing time, low biological activity, and poor ability to induce bone repair. , leading to insufficient implant stability in clinical use, resulting in restoration failure. Therefore, since the 1960s, researchers have tried to develop various titanium alloy materials (such as Ti-6Al-4V) on the basis of pure titanium, and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C32/00C22C1/08C22C1/10A61L27/06A61L27/12A61L27/50
CPCA61L27/06A61L27/12A61L27/50A61L2430/12B22F3/11C22C14/00C22C32/00
Inventor 彭倩唐瞻贵彭志伟王月红刘欧胜陈晓婧胡延佳方小丹李昆全宏志王柏胜邓智元潘灏顾立群谢长青
Owner CENT SOUTH UNIV