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Diffusion connection method for Al2O3/Ti with biocompatibility

A technology of biocompatibility and diffusion connection, which is applied in the field of Al2O3/Ti diffusion connection, can solve the problems of difficult processing, unfavorable air tightness and strength of connection joints, etc., so as to improve joint reliability, air tightness and strength, The effect of a reliable connection

Inactive Publication Date: 2020-01-14
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Al 2 o 3 Ceramics have a series of excellent properties such as high density, high purity, high strength, good corrosion resistance, biocompatibility, wear resistance, etc., which make them successfully used in orthopedic and dental implants very early, and become The earliest bioceramic to achieve a wide range of clinical applications, but its disadvantage is that it is difficult to process
However, Au solder is easy to react with Ti to form intermetallic compounds, which is detrimental to the airtightness and strength of the joint.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A biocompatible Al of the present invention 2 o 3 / Ti diffusion connection method, specifically follow the steps below:

[0028] S1. Pre-treatment of the base metal: using internal circular cutting machine and wire cutting machine to cut Al 2 o 3 Ceramic and metal Ti were cut into 5mm×5mm×3mm and 10mm×8mm×3mm substrates respectively, and then the Al 2 o 3 The ceramic substrate and metal Ti substrate were ground and polished with diamond sand table (600#~1500#) and SiC water sandpaper (600#~3000#) respectively, and the polished sample was ultrasonically cleaned 3 times in acetone solution , 15min each time;

[0029] S2, Al 2 o 3 Ceramic surface metallization treatment: the Al after step S1 treatment 2 o 3 The ceramic substrate is placed in a magnetron sputtering device for metallization, and a thin layer of Pd is deposited by sputtering. The magnetron sputtering power is 100W, the sputtering time is 60min, and the thickness of the Pd metal thin layer is 40μm;

...

Embodiment 2

[0035] A biocompatible Al 2 o 3 / Ti diffusion connection method, specifically follow the steps below:

[0036] S1. Pre-treatment of the base metal: using internal circular cutting machine and wire cutting machine to cut Al 2 o 3 Ceramic and metal Ti were cut into 5mm×5mm×3mm and 10mm×8mm×3mm substrates respectively, and then the Al 2 o 3 The ceramic substrate and metal Ti substrate were ground and polished with diamond sand table (600#~1500#) and SiC water sandpaper (600#~3000#) respectively, and the polished sample was ultrasonically cleaned 3 times in acetone solution , 15min each time;

[0037] S2, Al 2 o 3 Ceramic surface metallization treatment: the Al after step S1 treatment 2 o 3 Ceramics are placed in magnetron sputtering equipment for metallization, and a thin layer of Pd is deposited by sputtering. The magnetron sputtering power is 100W, the sputtering time is 90min, and the thickness of the Pd metal thin layer is 50μm;

[0038] S3. Metallization treatment on...

Embodiment 3

[0043] A biocompatible Al 2 o 3 / Ti diffusion connection method, specifically follow the steps below:

[0044] S1. Pre-treatment of the base metal: using internal circular cutting machine and wire cutting machine to cut Al 2 o 3 Ceramic and metal Ti were cut into 5mm×5mm×3mm and 10mm×8mm×3mm substrates respectively, and then the Al 2 o 3 The ceramic substrate and metal Ti substrate were ground and polished with diamond sand table (600#~1500#) and SiC water sandpaper (600#~3000#) respectively, and the polished sample was ultrasonically cleaned once in acetone solution. , 3 minutes each time;

[0045] S2, Al 2 o 3 Ceramic surface metallization treatment: the Al after step S1 treatment 2 o 3 The ceramic substrate is placed in a magnetron sputtering device for metallization, and a thin layer of Pd is deposited by sputtering. The magnetron sputtering power is 30W, the sputtering time is 150min, and the thickness of the Pd metal thin layer is 150μm;

[0046] S3. Metallizat...

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Abstract

The invention discloses a diffusion connection method for Al2O3 / Ti with biocompatibility. The method comprises the following steps: S1, preparing substrate sheets from an Al2O3 ceramic base material and a Ti metal base material, polishing the Al2O3 ceramic substrate sheets and the Ti substrate sheets separately, and then performing ultrasonic cleaning; S2, sputtering a Pd layer on the Al2O3 ceramic substrate sheets; S3, successively sputtering an Mo layer and a Pd layer on the Ti substrate sheets; S4, performing presintering on the Pd layer-sputtered Al2O3 ceramic base material obtained in thestep S2 and the Mo / Pd bimetal layer-sputtered Ti base material obtained in the step S3 for a period of time separately before welding, and performing cooling to room temperature; and S5, arranging the Pd-containing surface of the Al2O3 ceramic base material prepared in the step S3 opposite to the Mo / Pd bimetal layer-containing surface of the Ti base material prepared in the step S4, adding an Aulayer between the two opposite surfaces, then performing vacuum heating, applying a certain connection pressure while heating, and performing cooling to room temperature after heating of a period of time. Through the method, an adverse reaction between Ti and the Au solder can be prevented effectively, a union joint has a small participation stress, and the union joint has high air tightness and strength.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a biocompatible Al 2 o 3 / Ti diffusion bonding method. Background technique [0002] Al 2 o 3 Ceramics have a series of excellent properties such as high density, high purity, high strength, good corrosion resistance, biocompatibility, wear resistance, etc., which make them successfully used in orthopedic and dental implants very early, and become The first bioceramic to achieve a wide range of clinical applications, but its disadvantage is that it is difficult to process. Compared to Al 2 o 3 Ceramics, high-purity Ti has the advantages of good plasticity and toughness, high specific strength and high temperature strength, and Ti also has good biocompatibility and corrosion resistance, occupying an important position in the field of biomaterials, mainly used for Oral restoration and bone replacement in less loaded areas. Therefore, finding a suitable connection method to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B37/02
CPCC04B37/023C04B2237/124
Inventor 不公告发明人
Owner HARBIN INST OF TECH
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