Roller cone drill bit with improved erosion resistance
US-2017328135-A1 · Nov 16, 2017 · US
Method for carburizing tantalum container
US9435018B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9435018-B2 |
| Application number | US-201113990078-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 6, 2011 |
| Priority date | Nov 30, 2010 |
| Publication date | Sep 6, 2016 |
| Grant date | Sep 6, 2016 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Provided is a method for carburizing a tantalum container which can easily control the carburization thicknesses of various portions of the tantalum container and carburize the tantalum container with a uniform thickness. A method for carburizing a tantalum container 1 made of tantalum or a tantalum alloy to allow carbon to penetrate the tantalum container 1 includes the steps of: supporting the tantalum container 1 on a support member 5, 6 provided in a chamber 3 and setting the tantalum container 1 in the chamber 3 ; and reducing the pressure inside the chamber 3 and heating the interior of the chamber 3 , wherein a carbon source is placed in the vicinity of a portion of the tantalum container 1 hard to carburize.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for carburizing a tantalum container made of tantalum or a tantalum alloy to allow carbon to penetrate the tantalum container, the method comprising the steps of: supporting the tantalum container on a plurality of support rods provided in a chamber and setting the tantalum container in the chamber; and reducing the pressure inside the chamber and heating the interior of the chamber, wherein a carbon source is placed in the vicinity of a portion of the tantalum container hard to carburize, wherein the tantalum container is formed of a bottom part, a sidewall part, and an opening, and is set in the chamber to face the opening of the tantalum container downward by being supported on the plurality of supporting rods which are in direct contact with the bottom part of the tantalum container from the inside, and wherein the plurality of support rods are made of a carbon source. 2. The method for carburizing the tantalum container according to claim 1 , wherein at least an inside wall of the chamber is made of a carbon source. 3. The method for carburizing the tantalum container according to claim 1 , further comprising, prior to the step of placing the carbon source in the vicinity of the portion of the tantalum container hard to carburize, the step of reducing the pressure inside the chamber and heating the interior of the chamber to identify in advance the portion of the tantalum container hard to carburize. 4. The method for carburizing the tantalum container according to claim 1 , wherein the portion of the tantalum container hard to carburize includes the inside surfaces of the bottom part and the sidewall part of the tantalum container. 5. The method for carburizing the tantalum container according to claim 4 , wherein the carbon source is placed in the interior of the tantalum container. 6. The method for carburizing the tantalum container according to claim 1 , wherein the portion of the tantalum container hard to carburize is a corner portion thereof formed by the inside surfaces of the bottom part and the sidewall part of the tantalum container and the carbon source is placed in the vicinity of the corner portion. 7. The method for carburizing the tantalum container according to claim 1 , wherein the carbon source is a carbon foam.
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9435018B2 cover?
- Provided is a method for carburizing a tantalum container which can easily control the carburization thicknesses of various portions of the tantalum container and carburize the tantalum container with a uniform thickness. A method for carburizing a tantalum container 1 made of tantalum or a tantalum alloy to allow carbon to penetrate the tantalum container 1 includes the steps of: supportin…
- Who is the assignee on this patent?
- Watanabe Masanari, Abe Yoshihisa, Toyo Tanso Co
- What technology area does this patent fall under?
- Primary CPC classification C23C8/20. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 06 2016 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).