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Magnetron sputtering method for preparing HA/YSZ/polyimide bioactive composite material

A magnetron sputtering and bioactive technology, applied in the field of HA bioactive composite materials, can solve problems such as preparation technology limitations, and achieve the effects of avoiding stress shielding, good biomechanical properties, and low cost

Inactive Publication Date: 2007-07-11
JIANGSU UNIV
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Problems solved by technology

Its preparation technology is also limited by the choice of matrix material
Y 2 o 3 Stable ZrO 2 (referred to as YSZ, can be purchased directly from the market) has good biocompatibility and biomechanical properties, can be combined with HA to make HA / YSZ composite powder, and HA / YSZ can be prepared on polyimide (PI) matrix Bioactive coating composite materials have not been reported in China

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  • Magnetron sputtering method for preparing HA/YSZ/polyimide bioactive composite material

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Embodiment Construction

[0019] The artificial bone implant based on the HA biofilm on the PI surface is prepared by the magnetron sputtering process, and the present invention will be further described in conjunction with examples.

[0020] (1) Preparation of magnetron sputtering HA / YSZ target

[0021] Nanoscale HA powder is prepared by sol-gel method. Mix HA powder and YSZ powder. The mass of YSZ powder accounts for 5%, 10%, 15%, 20%, 25%, and 30% of the total mass of powder. %, 35%, 40%, respectively numbered NO1 ~ NO8, placed in a blast oven to dry, ground and sieved. The HA / YSZ target was prepared in a ZRY55 multifunctional vacuum hot-pressing sintering furnace, the hot-pressing pressure was 5t, the hot-pressing temperature was 1150°C, and the hot-pressing atmosphere was N 2 , hold the pressure for 4h and then cool with the furnace to obtain a magnetron sputtering HA / YSZ target with a size of 60mm×5mm.

[0022] (2) PI substrate surface pretreatment

[0023] The PI substrate was first cleaned ...

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Abstract

The invention discloses a making method of biological active composite material of HA / YSZ / polyimide through magnetic control sputtering method, which comprises the following steps: adding 5-40% YSZ powder in the nanometer graded HA powder; making HA / YSZ target material in the vacuum through heat sintering method; cleaning PI base; drying; placing on the base on the carrier of sputtering chamber; extracting the chamber into vacuum; making the pressure below 10-4Pa; activating the surface of PI base surface; placing HA / YSZ target material and PI base in the sputtering chamber; extracting the sputtering chamber into vacuum between 3*10-4 and 5*10-4 Pa; adjusting Ar flow quantity; reducing vacuum degree of sputtering chamber to 2*10-1Pa-1*10-1Pa; adjusting sputtering power to do firing sputter for 6-8h; fetching the sample out of sputtering chamber at 100-200 deg. c; insulating 2-4h; cooling.

Description

technical field [0001] The invention relates to HA bioactive composite materials, in particular to preparing HA / YSZ / polyimide (PI) bioactive composite material bone implants based on magnetron sputtering technology. Background technique [0002] In the field of hard tissue replacement and repair, relevant research at home and abroad mainly focuses on the deposition of hydroxyapatite (HA) coatings on medical metal substrates (such as Ti or Ti alloys), and its preparation technology is becoming more and more mature. In clinical applications, one of the disadvantages of the metal matrix is ​​the existence of "stress shielding", that is, the mismatch between the material properties of the matrix metal and human bone, mainly due to the great difference in elastic deformation characteristics, resulting in stress around the implant in the bone. Compared with the healthy state, the distribution is very different, and there are obvious stress concentration and shielding areas. Long-t...

Claims

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Application Information

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IPC IPC(8): C23C14/35C23C14/02C23C14/06C23C14/54
Inventor 赵玉涛林东洋罗平辉
Owner JIANGSU UNIV
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