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High-hardness and high-wear-resistance titanium alloy as well as preparation method and application thereof

A titanium alloy, high wear resistance technology, applied in the field of high hardness and high wear resistance titanium alloy and its preparation, can solve the problem of reducing the corrosion resistance and biocompatibility of titanium alloy, low hardness of pure titanium and titanium alloy, and restricting wide application and other problems, to achieve the effect of good application prospects, high biocompatibility, and high chemical stability

Active Publication Date: 2019-06-14
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, medical pure titanium and titanium alloys have low hardness and poor wear resistance, which limits their wide application in the biomedical field.
The hardness and wear resistance of titanium and titanium alloys can be improved by alloying elements, but some metal elements such as Cu or Ni will reduce the corrosion resistance and biocompatibility of titanium alloys

Method used

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Examples

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preparation example Construction

[0022] A method for preparing a high-hardness and high-wear-resistance titanium alloy, comprising the steps of:

[0023] (1) Weighing: Calculate the proportion of each component added according to the atomic percentage of the chemical composition and weigh each component accordingly;

[0024] (2) Put the components weighed in step (1) into the vacuum smelting furnace, and then adjust the vacuum degree to 5×10 -3 Pa, and then filled with argon as a protective gas, wherein the argon pressure is 0.05 Mpa; then set the equipment current to 50-200 A, the melting temperature to 1000-2000 K, and then carry out the melting treatment at least 4 times, after the end The titanium alloy can be obtained by cooling the obtained product with the furnace.

Embodiment

[0026] This embodiment prepares Ti with copper mold casting method 71 Pt 25 PD 1 Au 1 Ag 1 Rh 1 Take bulk amorphous alloys as an example.

[0027] It includes the following steps:

[0028] Step 1: Weigh each element

[0029] Calculate the proportion of each component element according to the atomic percentage of the chemical composition, and then weigh the raw materials for each element related to it;

[0030] Step 2: Melting and preparing Ti 71 Pt 25 PD 1 Au 1 Ag 1 Rh 1 Master Alloy

[0031] Put the required raw materials weighed in step (1) into the vacuum smelting furnace, and adjust the vacuum degree to 5×10 -3 Pa, filled with argon protective gas, the argon pressure is 0.05 MPa; the current is adjusted to 120 A, the melting temperature is 1800 K; after repeated melting for 4 times or more, it is taken out after cooling with the furnace to obtain Ti 71 Pt 25 PD 1 Au 1 Ag 1 Rh 1 master alloy;

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Abstract

The invention discloses a high-hardness and high-wear-resistance titanium alloy as well as a preparation method and application thereof. The chemical composition of the high-hardness and high-wear-resistance titanium alloy is TiaPtbMc, wherein M is at least one of Pd, Au, Ag and Rh, a is more than or equal to 70 at.% and less than or equal to 75 at.%, b is more than or equal to 24 at.% and less than or equal to 30 at.%, c is more than or equal to 1 at.% and less than or equal to 5 at.%, and a+b+c=100 at.%. The high-hardness and high-wear-resistance titanium chooses Ti and Pt binary alloys as the basis, and elements such as Pd, Au, Ag and Rh are further alloyed, so that the hardness of the alloy is remarkably improved; due to the fact that the selected alloying elements have relatively highchemical stability, the corrosion resistance and the biocompatibility of the alloy can be improved; the main crystal phase is a Ti3Pt intermetallic compound, the microhardness value of the Ti3Pt intermetallic compound is greater than 700HV, which is far higher than pure titanium and traditional medical titanium alloy, and can effectively alleviate the problem of poor wear resistance; and in addition, Pt, Pd, Au, Ag, Rh and the like are precious metal elements, have relatively high chemical stability and high corrosion resistance in a physiological environment, and can effectively reduce ion precipitation and reduce biotoxicity.

Description

technical field [0001] The invention relates to the field of alloy materials and their manufacture, in particular to a high-hardness and high-wear-resistance titanium alloy and its preparation method and application. Background technique [0002] In addition to numerous applications in industry, automotive and aerospace, titanium and titanium alloys are also widely used as biomedical implant materials to replace or repair damaged hard tissues in patients. In vitro and in vivo biocompatibility experiments on many different grades of titanium materials show that commercial pure titanium is a biomaterial with excellent biocompatibility because it can spontaneously form a highly inert and stable oxide layer. In addition, titanium and titanium alloys have high specific strength and low ion precipitation level in aqueous solution. These characteristics also promote their application in the field of biomedical materials. Furthermore, titanium is one of the few materials with osseo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02
Inventor 花能斌王乾廷甘毅祥廖振龙
Owner FUJIAN UNIV OF TECH
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