Fine grain niobium sheet via ingot metallurgy

a technology of niobium sheet and ingot metallurgy, which is applied in the direction of vacuum evaporation coating, metal material coating process, electrical equipment, etc., can solve the problems of synthetic diamond that requires excessive grinding to correct deficiencies, inconsistent and coarse grain size of niobium foil used,

Inactive Publication Date: 2007-03-01
H C STARCK INC
View PDF19 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The niobium foil used typically has an inconsistent and coarse grain size, which leads to poor flatness and smoothness of the deep drawn cup bottom.
Poor flatness and/or smoothness (orange peel) result in a synthetic diamond th

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] The present invention is directed to a method of making an alloy of niobium. The method includes: [0007] A) forming a blend comprising niobium powder and a powder of a metal selected from the group consisting of yttrium, aluminum, hafnium, titanium, zirconium, thorium, lanthanum and cerium and pressing the blend to form pressed blend; [0008] B) attaching the pressed blend to an electrode comprising niobium; [0009] C) melting the electrode and pressed blend under vacuum arc remelting conditions, such that the blend mixes with the melted electrode; [0010] D) cooling the melted electrode to form an alloy ingot; and [0011] E) applying thermo-mechanical processing steps to the alloy ingot to form a wrought product.

[0012] The present invention is also directed to a niobium containing wrought product prepared according to the above-described method.

[0013] The present invention is additionally directed to deep drawn cups and sputtering targets made from the modified niobium wrought...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Temperatureaaaaaaaaaa
Fractionaaaaaaaaaa
Fractionaaaaaaaaaa
Login to view more

Abstract

A method of making an alloy of niobium that includes: A) forming a blend comprising niobium powder and a powder of a metal selected from the group consisting of yttrium, aluminum, hafnium, titanium, zirconium, thorium, lanthanum and cerium and pressing the blend to form pressed blend; B) attaching the pressed blend to an electrode comprising niobium; C) melting the electrode and pressed blend under vacuum arc remelting conditions, such that the blend mixes with the melted electrode; D) cooling the melted electrode to form an alloy ingot; and E) applying thermo-mechanical processing steps to the alloy ingot to form a wrought product. The method provides a fully recrystallized niobium wrought product with a grain size finer that ASTM 5, that can be used to make deep drawn cups and sputtering targets.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates to a process for manufacturing niobium plates or sheets as well as uses thereof, such as for deep drawn cups and sputtering targets. [0002] Niobium ingots can be rolled to plate and sheet dimensions using known methods in the art. Such plates and sheets can be used, for example, by being deep drawn into cups for the synthetic diamond industry. The niobium foil used typically has an inconsistent and coarse grain size, which leads to poor flatness and smoothness of the deep drawn cup bottom. Poor flatness and / or smoothness (orange peel) result in a synthetic diamond that requires excessive grinding to correct deficiencies. The problem ultimately relates to a coarse grain structure in the niobium sheet. The coarse grain structure can also cause tearing of the sheet during deep-draw operations. [0003] The grain size of typical, commercially available niobium sheet is variable, ranging from an ASTM grain size of from 4 to 1...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22F1/18
CPCB22F2998/10C22B9/20C22B34/24C22C27/02C22F1/18C23C14/3414B22F1/0003B22F3/02B22F3/14B22F3/24H05H7/20B22F1/09
Inventor AIMONE, PAUL R.
Owner H C STARCK INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap