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Ferritic alloy

A ferrite and alloy technology, applied in metal material coating process, coating, etc., can solve the problem that alloy cannot provide high temperature resistance

Active Publication Date: 2021-07-09
SANDVIK INTELLECTUAL PROPERTY AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the resulting alloy does not provide high temperature resistance

Method used

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Examples

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Embodiment

[0084] Test melts were produced in vacuum furnaces. The composition of the test melt is shown in Table 1.

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Abstract

The invention relates to a ferritic alloy. Specifically, a ferritic alloy comprising the following elements in wt% [wt%]: C 0.01 to 0.1wt%; 0.001 to 0.1wt% of N; O: < = 0.2wt%; 4 to 15 wt% of Cr; 2 to 6 wt% of Al; 0.5 to 3wt% of Si; Mn: < = 0.4wt%; Mo + W < = 4wt%; Y < = 1.0wt%; Sc, Ce and / or La < = 0.2wt%; Zr < = 0.40 wt%; RE <= 0.4 wt%; the balance is Fe and normally appearing impurities; and the ferrite alloy also needs to meet the following equation: 0.014 <=(Al+0.5SQ(Cr+10Si+0.1) <= 0.022.

Description

[0001] The patent application for this invention is an application for an invention patent with the international application number PCT / EP2017 / 055143, the international application date is March 6, 2017, the application number entering the Chinese national phase is 201780024611.1, and the invention name is "ferritic alloy". Divisional application. technical field [0002] This invention relates to ferritic alloys. In particular, the disclosure relates to a ferritic alloy according to the preamble of claim 1 . The present disclosure also relates to the use of ferritic alloys and to articles or coatings made therefrom. Background technique [0003] Ferritic alloys, such as FeCrAl alloys containing chromium (Cr) levels of 15-25% by weight and aluminum (Al) levels of 3-6% by weight, as they form a protective α-alumina (Al 2 o 3 ), the ability of alumina oxide layer is well known. The lower limit of the Al content that forms and maintains the alumina oxide layer varies with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/06C22C38/02C22C38/04C22C38/34C22C38/22C22C38/28C22C38/18C23C30/00
CPCC22C38/06C22C38/02C22C38/04C22C38/005C22C38/34C22C38/22C22C38/28C22C38/18C22C38/001C23C30/00C22C38/44C22C38/50C21D2211/005C22C1/02
Inventor 保·荣松
Owner SANDVIK INTELLECTUAL PROPERTY AB
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