US2023099171A1PendingUtilityA1

L10 type iron-nickel ordered alloy and method of manufacturing l10 type iron-nickel ordered alloy

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Assignee: DENSO CORPPriority: Sep 27, 2021Filed: Sep 22, 2022Published: Mar 30, 2023
Est. expirySep 27, 2041(~15.2 yrs left)· nominal 20-yr term from priority
Inventors:Hiroaki KuraTakahiro NishioEiji WatanabeYoshiaki HayashiTakayuki YamamotoHisashi MaeharaTakanori Matsuno
C23C 8/26C22C 38/08C22C 38/002
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Claims

Abstract

An L10 type iron-nickel (FeNi) ordered alloy has an L10 type ordered structure and contains sulfur. The L10 type FeNi ordered alloy may have a sulfur content in a range from 0.01% by mass to 10% by mass. A manufacturing method of an L10 type FeNi ordered alloy includes performing a nitriding treatment to an FeNi alloy containing sulfur to obtain a nitride containing Fe and Ni.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An L1 0  type iron-nickel (FeNi) ordered alloy having an L1 0  type ordered structure and containing sulfur. 
     
     
         2 . The L1 0  type FeNi ordered alloy according to  claim 1 , wherein a sulfur content is 0.01% by mass or more. 
     
     
         3 . The L1 0  type FeNi ordered alloy according to  claim 1 , wherein a sulfur content is 10% by mass or less. 
     
     
         4 . The L1 0  type FeNi ordered alloy according to  claim 1 , wherein the L1 0  type FeNi ordered alloy is composed of particles having the L1 0  type ordered structure, and the sulfur is present throughout the particles. 
     
     
         5 . The L1 0  type FeNi ordered alloy according to  claim 1 , wherein the L1 0  type FeNi ordered alloy is composed of particles having the L1 0  type ordered structure, and the sulfur is segregated to the particles. 
     
     
         6 . The L1 0  type FeNi ordered alloy according to  claim 5 , wherein the sulfur is segregated on surfaces of the particles. 
     
     
         7 . The L1 0  type FeNi ordered alloy according to  claim 1 , wherein an oxidation number of the sulfur includes S 2−  or S 6+  or a mixed state of S 2−  and S 6+ . 
     
     
         8 . A manufacturing method of an L1 0  type iron-nickel (FeNi) ordered alloy comprising performing a nitriding treatment to an FeNi alloy containing sulfur to obtain a nitride containing Fe and Ni. 
     
     
         9 . The manufacturing method according to  claim 8 , wherein a sulfur content in the FeNi alloy is 0.01% by mass or more. 
     
     
         10 . The manufacturing method according to  claim 8 , wherein a sulfur content in the FeNi alloy is 10% by mass or less. 
     
     
         11 . The manufacturing method according to  claim 8 , wherein the nitriding treatment includes a heat treatment at a temperature in a range from 300 to 500° C. 
     
     
         12 . The manufacturing method according to  claim 8 , wherein the nitriding treatment includes a heat treatment at a temperature in a range from 330 to 450° C. 
     
     
         13 . The manufacturing method according to  claim 8 , wherein a nitriding efficiency in the nitriding treatment to obtain the nitride containing Fe and Ni is greater than 4.7×10 −5 .

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