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Ni-based amorphous alloy with high ductility, high corrosion resistance and excellent delayed fracture resistance

An amorphous alloy, high corrosion resistance technology, applied in the direction of metal layered products, chemical instruments and methods, layered products, etc., to achieve the effect of high wear resistance and excellent corrosion resistance

Inactive Publication Date: 2013-07-03
NAKAYAMA STEEL WORKS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Hysteresis Breaking Becomes a Fatal Flaw

Method used

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  • Ni-based amorphous alloy with high ductility, high corrosion resistance and excellent delayed fracture resistance
  • Ni-based amorphous alloy with high ductility, high corrosion resistance and excellent delayed fracture resistance
  • Ni-based amorphous alloy with high ductility, high corrosion resistance and excellent delayed fracture resistance

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Embodiment Construction

[0070] The Ni-based amorphous alloy according to the present invention can be produced by the so-called single-roll method or the double-roll method using 1 or 2 cooled rolls, and can be manufactured by using thermal spraying equipment with a rapid cooling function. Manufactured by spraying.

[0071] The present inventors prepared a strip (metal flake) formed of a Ni-based amorphous alloy by a single-roll method in the following procedure. That is, for each of the amorphous alloys shown in Table 1, first, a mixture of pure metals and semimetals of the respective components was dissolved by high-frequency heating in an Ar atmosphere, and cast with a Cu mold to obtain a master alloy. This master alloy was again dissolved by high-frequency heating in an Ar atmosphere, and blown onto the surface of a single roll that rotated while being cooled from the inside to obtain an amorphous ribbon. The thickness of the amorphous tape was made to be 30 μm and 60 μm by changing the number o...

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Abstract

Provided is a fully-fledged industrial-use material amorphous alloy with a wide range of applications, that solves the issues of delayed fractures and ductility, etc., and that includes: 63 at% or more Ni; 10%-25 at% B, as a semimetal for amorphization; and one or more of Cr, Mo, or Nb for the remainder.

Description

technical field [0001] The invention related to the claims relates to a Ni-based amorphous alloy that can be used in large quantities as an industrial material, has high ductility, excellent resistance to hysteresis fracture due to hydrogen, and high corrosion resistance. Background technique [0002] Although amorphous alloys have been around for nearly 50 years, they have not been fully used as industrial materials for large equipment. This is because when used in large-scale equipment, there is a problem that equipment with a high cooling rate is required to prepare amorphous alloys with a plate thickness of 300 to 150 microns, and there are also amorphous alloys that do not meet the requirements for being able to be used as industrial materials. Problems with physical properties (excellent ductility and hysteresis damage resistance). This invention aims to solve this physical property problem. [0003] Fe-based amorphous alloys such as Fe-Cr and Fe-Cr-Mo have excellent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/04
CPCC22C45/02C22C19/056C22C19/058B32B15/015C22C1/03C22C45/04C22C1/11
Inventor 仓桥隆郎三村恒裕网谷健儿早乙女康典
Owner NAKAYAMA STEEL WORKS
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