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Method for manufacturing a part coated with a protective coating
US9995153B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9995153-B2 |
| Application number | US-201515532399-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 1, 2015 |
| Priority date | Dec 3, 2014 |
| Publication date | Jun 12, 2018 |
| Grant date | Jun 12, 2018 |
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- Title
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Abstract
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A method for manufacturing a part coated with a protective coating includes: forming a protective coating across all or part of the surface of a part, wherein the part includes a refractory alloy including a niobium matrix containing metal silicide inclusions, wherein the protective coating is formed by a pack carburization method from a cement including: i. a mixture A of (Nb x Ti 1-x ) 3 M 3 CrSi 6 and M 0.6 Cr 0.4 Si where M denotes Fe, Co or Ni and x is between 0 and 1, or ii. a mixture B of M′Si, NbSi 2 and Nb 4 M′ 4 Si 7 where M′ denotes Fe, Co or Ni.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of fabricating a part coated with a protective coating comprising: forming a protective coating over all or part of a surface of the part, the part comprising a refractory alloy having a niobium matrix with inclusions of metal silicides present therein, the protective coating being formed by a pack cementation process using a cement comprising: i) a mixture A of (Nb x Ti 1-x ) 3 M 3 CrSi 6 and of M 0.6 Cr 0.4 Si, where M designates Fe, Co, or Ni and x lies in the range 0 to 1; or ii) a mixture B of M′Si, of NbSi 2 , and of Nb 4 M′ 4 Si 7 , where M′ designates Fe, Co, or Ni. 2. A method according to claim 1 , wherein the cement comprises a mixture A and wherein M designates Co or Ni. 3. A method according to claim 2 , wherein M designates Ni. 4. A method according to claim 1 , wherein the cement comprises a mixture A and wherein x=0. 5. A method according to claim 1 , wherein the cement comprises a mixture A and wherein x is not equal to 0. 6. A method according to claim 5 , wherein x=1. 7. A method according to claim 1 , wherein the cement comprises a mixture A and wherein the ratio r 1 lies in the range from 0.9 to 1.1, wherein r 1 = weight of ( Nb x Ti 1 - x ) 3 M 3 CrSi 6 in the cement before the beginning of the pack cementation process . weight of M 0.6 Cr 0.4 Si in the cement before the beginning of the
Assignees
Inventors
Classifications
Refractory metals, i.e. Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W · CPC title
- F01D5/288Primary
Protective coatings for blades · CPC title
Selecting particular materials; {Particular measures relating thereto;} Measures against erosion or corrosion · CPC title
Diffusion of at least chromium · CPC title
- C23C10/52Primary
more than one element being diffused in one step · CPC title
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- What does patent US9995153B2 cover?
- A method for manufacturing a part coated with a protective coating includes: forming a protective coating across all or part of the surface of a part, wherein the part includes a refractory alloy including a niobium matrix containing metal silicide inclusions, wherein the protective coating is formed by a pack carburization method from a cement including: i. a mixture A of (Nb x Ti 1-x ) 3 M 3 …
- Who is the assignee on this patent?
- Safran Aircraft Engines, Univ De Lorraine
- What technology area does this patent fall under?
- Primary CPC classification F01D5/288. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 12 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).