Title:
NICKEL ALLOY HAVING EXCELLENT SURFACE PROPERTIES AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/062855
Kind Code:
A1
Abstract:
[Problem] To provide a nickel alloy having excellent surface properties and a manufacturing method thereof by which the composition of non-metallic inclusions which affect the surface properties is controlled. [Solution] The present invention is characterized by containing, by mass% hereinafter, 99.0% or more of Ni, 0.020% or less of C, 0.01 to 0.3% of Si, 0.3% or less of Mn, 0.010% or less of S, 0.2% or less of Cu, 0.001 to 0.1% of Al, 0.4% or less of Fe, 0.0001 to 0.0050% of O, 0.001 to 0.030% of Mg, 0.0001 to 0.0050% of Ca, 0.0001 to 0.01% of B, and the balance inevitable impurities, wherein: non-metallic inclusions include one or more kinds among MgO, CaO, CaO-Al2O3-type oxide, CaO-SiO2-type oxide, CaO-MgO-type oxide, and MgO·Al2O3; and the number ratio of the MgO·Al2O3 to the total oxide-type non-metallic inclusions is 50% by number or less.
Inventors:
KIRIHARA FUMIAKI (JP)
OGASAWARA DAIKI (JP)
OGASAWARA DAIKI (JP)
Application Number:
PCT/JP2022/009725
Publication Date:
April 20, 2023
Filing Date:
March 07, 2022
Export Citation:
Assignee:
NIPPON YAKIN KOGYO CO LTD (JP)
International Classes:
C22C1/02; C22C19/03; C22F1/10; C22F1/00
Foreign References:
| JP2012177140A | 2012-09-13 | |||
| JPS63168259A | 1988-07-12 | |||
| JPH08143996A | 1996-06-04 |
Attorney, Agent or Firm:
SUENARI, Mikio (JP)
Download PDF: