Title:
NICKEL-BASE ALLOY, HEAT-RESISTANT AND CORROSION RESISTANT COMPONENT, AND COMPONENT FOR HEAT-TREATMENT FURNACE
Document Type and Number:
WIPO Patent Application WO/2021/132350
Kind Code:
A1
Abstract:
The present invention provides a nickel-base alloy with outstanding corrosion resistance and mechanical strength at high temperatures, a heat-resistant and corrosion-resistant component, and a component for a heat-treatment furnace. This nickel-base alloy comprises, by mass percentage, more than 5.0% and no more than 26.0% of aluminum and more than 0% and no more than 5.0% zirconium, with the remainder being nickel and unavoidable impurities. It is preferable that the nickel-base alloy include boron and that the total quantity, by mass percentage, of zirconium and boron be more than 0% and no more than 5.0%. Moreover, it is preferable that P value, which equals −18.95 + 0.1956 × Ni% + 0.1977 × Al% + 0.2886 × Zr% + 12.45 × B%, and Q value, which indicates the area ratio of Ni3Al deposited on the surface as a proportion, satisfy the condition Q value ≥ 0.89 × P value − 0.53.
More Like This:
Inventors:
KAMITSUJI AYANO (JP)
ASANO SOICHI (JP)
ENJO YOHEI (JP)
HASHIMOTO KUNIHIDE (JP)
ASANO SOICHI (JP)
ENJO YOHEI (JP)
HASHIMOTO KUNIHIDE (JP)
Application Number:
PCT/JP2020/048202
Publication Date:
July 01, 2021
Filing Date:
December 23, 2020
Export Citation:
Assignee:
KUBOTA KK (JP)
International Classes:
F27B7/00; C22C19/03; F27D1/00
Foreign References:
| JPS55110748A | 1980-08-26 | |||
| JPS62274042A | 1987-11-28 | |||
| JPS5669342A | 1981-06-10 | |||
| JP2011504809A | 2011-02-17 | |||
| US20150292062A1 | 2015-10-15 | |||
| JP2014080675A | 2014-05-08 |
Other References:
See also references of EP 4083554A4
Attorney, Agent or Firm:
MARUYAMA & CO. (JP)
Download PDF: