Ni-Ta binary block body metal glass

A technology of metallic glass and bulk metal, applied in the field of new materials, can solve the problems of arbitrary composition selection and complex optimization, and inability to prepare bulk metallic glass

Inactive Publication Date: 2011-02-02
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problems to be solved by the present invention are: ① Bulk metallic glass cannot be prepared in the Ni-Ta binary alloy system, ② Insufficiency of randomness and complex optimization in composition selection

Method used

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  • Ni-Ta binary block body metal glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 Ni 59 Ta 41 Preparation and performance testing of bulk metallic glasses

[0031] Step 1: Weighing of ingredient ratio

[0032] The composition is designed according to the atomic percentage. In the process of weighing the raw materials, the alloy atomic percentage Ni 59 Ta 41 Converted to weight percent Ni 31.8 Ta 68.2 , weighing the raw materials of pure metal Ni and 99.9% Ta with a purity of 99.99% in proportion, for subsequent use;

[0033] Step 2: Melting of alloy ingot

[0034] Put the mixture of Ni and Ta according to the above-mentioned composition ratio in the water-cooled copper crucible of the electric arc melting furnace, and use the non-consumable arc melting method to melt under the protection of argon gas, and repeat the melting 3 times in this way to obtain a uniform composition. alloy ingot;

[0035] Step 3: Preparation of bulk metallic glass

[0036] The alloy ingot is placed in a quartz tube connected to an induction coil. Under th...

Embodiment 2

[0039] Example 2 Ni 60 Ta 40 Preparation and performance testing of bulk metallic glasses

[0040] Step 1: Weighing of ingredient ratio

[0041] The composition is designed according to the atomic percentage. In the process of weighing the raw materials, the alloy atomic percentage Ni 60 Ta 40 Converted to weight percent Ni 32.7 Ta 67.3 , weighing the raw materials of pure metal Ni and 99.9% Ta with a purity of 99.99% in proportion, for subsequent use;

[0042] Step 2: Alloy ingot melting

[0043] Step 3: Preparation of bulk metallic glass

[0044] Step two and step three are the same as step two and step three in embodiment one;

[0045] Step 4: Bulk Metallic Glass Structure and Performance Test

[0046] X-ray detection and thermal analysis test are the same as embodiment one, and the thermodynamic parameters recorded are respectively T g =993K,T x =1047K,T m =1630K; Young's modulus and breaking strength measured by compression testing machine are respectively: E=...

Embodiment 3

[0047] Example 3 Ni 61 Ta 39 Preparation and performance testing of bulk metallic glasses

[0048] Step 1: Weighing of ingredient ratio

[0049] The composition is designed according to the atomic percentage. In the process of weighing the raw materials, the alloy atomic percentage Ni 61 Ta 39 Converted to weight percent Ni 33.6 Ta 66.4 , weighing the raw materials of pure metal Ni and 99.9% Ta with a purity of 99.99% in proportion, for subsequent use;

[0050] Step 2: Alloy ingot melting

[0051] Step 3: Preparation of bulk metallic glass

[0052] Step two and step three are the same as step two and step three in embodiment one;

[0053] Step 4: Bulk Metallic Glass Structure and Performance Test

[0054] X-ray detection and thermal analysis test are the same as embodiment one, and the thermodynamic parameters recorded are respectively T g =993K,T x =1050K,T m =1630K; Young's modulus and breaking strength measured by compression testing machine are respectively: E=...

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Abstract

The invention discloses Ni-Ta binary block body metal glass belonging to the technical field of novel materials. The Ni-Ta binary block body metal glass is characterized in that the component range of a Ni-Ta binary alloy which is designed according to structure model of 'cluster and connecting atoms' is NixTa100-x, wherein x is 59-62 at .percent (atom percentage) and a block body metal glass rodwith the diameter of 2mm can be formed; and the highest glass-transition temperature of all block body metal glass forming systems at present is 993K. The invention has the advantages of developing anew Ni-Ta binary block body metal glass forming system, determining the component range of block body metal glass and producing metal glass rods with the diameter of 2mm and extremely-high strength by using a common copper mold casting method.

Description

technical field [0001] The invention belongs to the technical field of new materials and relates to a Ni-Ta binary bulk metallic glass with large glass forming ability, the highest glass transition temperature and high strength. Background technique [0002] From a structural point of view, amorphous alloys usually have short-range order in the range of several atomic distances, but do not have the long-range order structure characteristics of crystalline alloys. They have high comprehensive mechanical properties and unique physical and chemical properties, but due to the influence of the glass-forming ability of the alloy, it is difficult to prepare such materials and require a higher cooling rate. The general critical cooling rate is 10 5 K / s. In the early days, some quenching technologies were usually used, such as melt atomization, thin film deposition technology, and copper roller quenching strip technology, to prepare low-dimensional materials such as powder and thin ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/00
Inventor 羌建兵王清王英敏董闯
Owner DALIAN UNIV OF TECH
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