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Method for coating TiAlN on surfaces of titanium and titanium alloy surgical instruments

A surgical instrument and surface coating technology, which is applied in metal material coating process, coating, sputtering coating, etc., can solve the problem of low surface hardness of titanium and titanium alloy parts, rapid wear or seizure of rotating parts, and reduce surgical cost. To solve problems such as the life of medical devices, achieve the effect of light weight, small friction coefficient and dense tissue

Inactive Publication Date: 2012-03-28
湖南迈迪科新材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it should be pointed out that titanium and titanium alloy parts are easy to scratch due to low surface hardness, and their appearance and use quality gradually decline during long-term use, which reduces the life of surgical medical devices.
At the same time, titanium and titanium alloy parts are damaged due to the large friction coefficient caused by the sliding of the instrument, rapid wear or seizure of the rotating parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) To make pliers series surgical instruments, such as rongeurs, first, the rongeur parts made of TC4 titanium alloy are ultrasonically cleaned in trichlorethylene, gasoline cleaned (twice), washed with water, pickled, ethanol Wash and finally dry.

[0022] 2) Wrap the dried sample with copper foil, and only expose the edge part that needs to be coated, put it into an ion coating machine (PVD) to prepare a TiAlN coating, then vacuum cool it, and take it out of the furnace. The process parameters are as follows: target current 60-70 A, substrate negative bias voltage -300V, N 2 The partial pressure is 0.32Pa, the deposition temperature is 500°C, the total deposition time is 120 min, and the coating thickness is about 3 μm. The vacuum furnace is cooled to 80°C, and the sample is released from the furnace.

[0023] 3) After the coating is completed, it is washed with water, wiped and dried, assembled and packaged.

[0024] 4) Its material properties are as follows:

[...

Embodiment 2

[0027] 1) To make tweezers series of surgical instruments, such as micro tweezers, firstly, the micro tweezers parts made of TC4 titanium alloy are ultrasonically cleaned in trichlorethylene, washed with gasoline (twice), washed with water, pickled, ethanol Wash and finally dry.

[0028] 2) Wrap the dried sample with copper foil, exposing only the working part of the tweezers end that needs to be coated, and put it into an ion coating machine (PVD) to prepare a TiAlN coating, then vacuum cool it, and take it out of the furnace. The process parameters are as follows: target current 60-70 A, substrate negative bias voltage -200V, N 2 The partial pressure is 0.32Pa, the deposition temperature is 500°C, the total deposition time is 120 min, and the coating thickness is about 3 μm. The vacuum furnace is cooled to 80°C, and the sample is released from the furnace.

[0029] 3) After the coating is completed, it is washed with water, wiped and dried, assembled and packaged.

[0030...

Embodiment 3

[0033] 1) To make a series of hooks for surgical instruments, such as medical hooks, first, the parts of the medical hooks made of TC4 titanium alloy are ultrasonically cleaned in trichlorethylene, washed with gasoline (twice), washed with water, pickled, ethanol Wash and finally dry.

[0034] 2) Wrap the dried sample with copper foil, and only expose the hook part that needs to be coated, put it into an ion coating machine (PVD) to prepare a TiAlN coating, then vacuum cool it, and take it out of the furnace. The process parameters are as follows: target current 60-70 A, substrate negative bias voltage -400V, N 2 The partial pressure is 0.32Pa, the deposition temperature is 500°C, the total deposition time is 120 min, and the coating thickness is about 3 μm. The vacuum furnace is cooled to 80°C, and the sample is released from the furnace.

[0035] 3) After the coating is completed, it is washed with water, wiped and dried, assembled and packaged.

[0036] 4) Its material p...

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Abstract

The invention provides a preparation method for coating TiAlN on the surfaces of titanium and titanium alloy, and relates to a preparation process for coating TiAlN on the surfaces of titanium and titanium alloy. The preparation method is conducted according to the following steps: a, titanium alloy sample materials are got ready, then examined before sample plating preparation, and subjected to ultrasonic cleaning in trichloroethylene, gasoline cleaning (twice), water cleaning, acid cleaning, ethanol cleaning and finally drying; b, TiAlN platings are prepared by adopting an eight-arc-source multi-arc ion plating machine, dried samples are charged into a furnace and cleaned in an ion bombardment manner, and then the TiAlN platings are prepared, cooled in a vacuum manner and discharged from the furnace; c, the preparation technological parameters of the TiAlN platings are that the target current is 60 to 70A, the substrate negative bias is minus 100 to minus 400V, the N2 partial pressure is 0.32Pa, the deposition temperatures are 500 DEG C and 600 DEG C, the total deposition time is 120min, the plating thickness is about three microns, and after the samples are discharged from the furnace after being cooled to a temperature of 80 DEG C in the vacuum furnace; d, energy-dispersive spectrometer (EDS) analysis of coating surfaces is conducted; and e, after the plating is completed, the TiAlN platings are subjected to water cleaning, wiping, drying, assembly and packaging. The TiAlN platings obtained by adopting the preparation method have the advantages of good chemical stability, high anti-oxidation-wear ability, high strength, and high wear resistance.

Description

technical field [0001] The invention relates to a surface treatment of a titanium alloy, in particular to a surface treatment of a titanium alloy for medical surgical instruments and a preparation method thereof. Background technique [0002] In recent years, titanium and titanium alloys have been promoted to the field of surgical medical devices due to their advantages in light weight, high strength, good corrosion resistance, high heat resistance, and no rust compared with other metal materials. [0003] However, it should be pointed out that titanium and titanium alloy parts are easy to scratch due to low surface hardness, and their appearance and quality of use gradually decline during long-term use, which reduces the life of surgical medical devices. At the same time, titanium and titanium alloy parts are damaged due to their large friction coefficient, which causes the equipment to slide, and the rotating parts are quickly worn or seized. In order to improve the appea...

Claims

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Application Information

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IPC IPC(8): C23C14/32C23C14/06C23C14/04
Inventor 杨伏良易丹青刘会群
Owner 湖南迈迪科新材有限公司
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