Titanium alloy powder, and preparation method and application thereof

Abstract

The invention discloses a titanium alloy powder, and a preparation method and application thereof. The titanium alloy powder is mainly prepared by mixing the following components in percentage by weight: 2-7% of aluminum powder, 2-8% of molybdenum powder, 2-6% iron powder and the balance of titanium powder. The titanium alloy powder is mainly applied to the field of preparation for orthopedic implant special-shaped parts for spinal internal fixation. The titanium alloy powder has low cytotoxicity and production cost, and can achieve complex three-dimensional structure formation once and mass production of the orthopedic implant special-shaped parts with high raw material utilization rate, low cost and excellent mechanical property.

Description

technical field [0001] The invention belongs to the technical field of spinal internal fixation orthopedic implants, and in particular relates to a titanium alloy powder which can be used for bone repair and its preparation method and application. Background technique [0002] Human bone is a tissue with a certain hardness and elasticity, which supports the human body to walk upright and protects important internal organs. Bone can be fractured or worn under the action of external force or disease, and implants need to be used for necessary repairs, or directly replace the function of the bone. At present, the increasing incidence of traffic accidents in my country's urban and rural areas has significantly increased the number of traumas. At the same time, my country's population aging and people's emphasis on quality of life will make my country's demand for orthopedic implants grow rapidly. Clinically used orthopedic implant materials mainly include stainless steel, cobal...

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Problems solved by technology

At present, the titanium alloy used in the manufacture of spinal orthopedic internal fixation products is mainly Ti-6Al-4V, and V (vanadium) is a cytotoxic element, which is buried in the human body for a long time and may dissolve into free monomers and enter the body fluid. As a result, it causes toxicity to organisms; at the same time, most titanium alloy orthopedic implant products are produced by: (1) The traditional vacuum self-consumption melting→forging→machining method is produced. This method has a long process flow, many equipments, and a low yield. Subsequent processing is cumbersome, resulting in high preparation costs, and it is difficult to automate mass production; (2) Casting production, this production process can obtain complex-shaped net-shape or near-net-shape products, but the composition of the material during the casting process segregation, looseness, shrinkage, etc. Defects such as holes are unavoidable, and the material performance is low

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