Block metal glass containing iridium and preparation method thereof

A technology of bulk metal and glass, which is applied in the field of amorphous alloys, can solve the problems of increased processing difficulty, high melting point of iridium, and difficult processing of iridium, and achieve good mechanical properties and structural properties, high corrosion resistance and resistance, Strong ability to inhibit crystallization

Pending Publication Date: 2018-12-11
INST OF PHYSICS - CHINESE ACAD OF SCI
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, due to the high melting point of iridium, it is extremely difficult to process iridium at room temperature, especially the brittle characteristics of iridium greatly increase the difficulty of processing. Therefore, for a long time, iridium and its alloys Applications are very limited
[0007] In addition, the price of iridium itself is very expensive, which makes it difficult to promote the iridium gold alloy on a large scale when considering the cost factor.
[0008] At present, iridium has been applied to the amorphous field, but the prior art only discloses some amorphous alloys doped with a small amount of iridium, such as W 38 Ir 17 Ru 31 B 14 、Co 52 Ir 5 Ta 8 B 35 Wait
The formation ability of these amorphous alloys is poor, and only strips with a thickness of about tens of microns can be made, and the supercooled liquid phase region is less than 60°C, which greatly limits the application of amorphous iridium alloys.
In addition, about the iridium-containing bulk metallic glass, there is no report before the present invention

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Block metal glass containing iridium and preparation method thereof
  • Block metal glass containing iridium and preparation method thereof
  • Block metal glass containing iridium and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, preparation Ir 25 Ni 35 Ta 40 bulk metallic glass

[0036] The Ir, Ni and Ta components with a raw material purity of 99.9wt% (weight percent) are compounded in a molar ratio of 25:35:40; in an electric arc furnace with an argon atmosphere adsorbed by titanium, they are mixed through repeated smelting Homogeneous (that is, all the components are melted), and Ir is obtained after cooling 25 Ni 35 Ta 40 Master alloy ingot; then use the conventional metal mold casting method to remelt the ingot (as long as all the components are melted), and use the suction casting device in the electric arc furnace to suck the master alloy melt into the water-cooled copper mold, Get the composition as Ir 25 Ni35 Ta 40 , a large piece of metallic glass with a diameter of 2 mm.

[0037] X-ray diffraction (XRD) of the metallic glass figure 1 As shown, it can be seen that Ir 25 Ni 35 Ta 40 The alloy is a completely amorphous alloy.

[0038] The differential scanning...

Embodiment 2-4、8、10-17、25 and 32-34

[0040] Examples 2-4, 8, 10-17, 25 and 32-34, preparation of other iridium-containing bulk metallic glasses

[0041] Iridium-containing bulk metallic glasses with various proportions and no B were prepared according to the method of Example 1, and their composition and thermophysical parameters are listed in Table 1.

[0042] The X-ray diffraction pattern of the iridium-containing bulk metallic glass sample prepared in embodiment 2-4 is as follows figure 1 As shown, it can be seen that these alloys are completely amorphous alloys.

Embodiment 3

[0043] The differential scanning calorimetry (DSC) curve figure of the iridium-containing bulk metallic glass sample prepared in embodiment 3 is as follows image 3 As shown, it can be seen from the figure that its glass transition temperature T g Compared with Example 1, it has increased by about 78K, T x It has been increased by 16K; the physical picture after static corrosion by aqua regia for 120 hours is as follows Figure 5 As shown (right in the picture), the surface still has a metallic luster, and the quality does not change within the error range (minimum precision 0.01mg).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
hardnessaaaaaaaaaa
Login to view more

Abstract

The invention relates to block metal glass containing iridium. The block metal glass takes the iridium as a basic element, and the composition formula is Ir[Ta<x>(Nb)<1-x>][Ni<y>(Co)<z>(Fe)<r>(Cu)<m>(V)<n>(W)<k>]<c>B<d>. The invention further relates to a preparation method of the block metal glass containing the iridium. Compared with the prior art, the block metal glass has the original antioxidant and corrosion resistance characteristics of an iridium alloy, and has an ultra-wide supercooling liquid phase region (about 100 K); the amorphous alloy can be subjected to thermoplastic molding in the temperature interval, the temperature is much lower than the processing temperature of a traditional iridium alloy, and thus the processing difficulty is greatly lowered; and meanwhile, theamorphous alloy uses non-precious metal components such as tantalum and nickel, thus the cost of the original iridium alloy is also lowered, and the amorphous alloy has wide application prospects.

Description

technical field [0001] The invention belongs to the field of amorphous alloys. Specifically, the present invention relates to iridium as the basic component, with a variety of metals (tantalum, niobium, vanadium, nickel, cobalt, iron, copper, tungsten) and non-metallic boron, obtained through appropriate composition design with super Bulk metallic glasses with high glass transition temperature and ultra-wide supercooled liquid region. Background technique [0002] Metallic glass is an alloy with a special structure formed by an alloy in a molten state through rapid cooling to avoid crystallization, also known as an amorphous alloy. Compared with crystalline alloys, amorphous alloys have no fixed lattice structure, so they have many excellent properties, such as high strength, high hardness, and corrosion resistance. Studies have shown that the catalytic performance of amorphous alloys is superior to that of mostly crystalline materials, and exhibits unique self-stability. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/10C22C45/04C22C45/00
CPCC22C45/003C22C45/04C22C45/10C22C1/11
Inventor 李明星柳延辉汪卫华
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap