High|temperature treatments of niobium under high vacuum

High-temperature treatments of niobium under high vacuum, dilute air

Niobium metal foils were heat-treated at 900°C under different conditions and in situ investigated with time-resolved X-ray absorption ...

High-temperature treatments of niobium under high vacuum, dilute air

High-temperature treatments of niobium under high vacuum, dilute air- and nitrogen-atmospheres as investigated by in situ X-ray absorption spectroscopy.

High-temperature treatments of niobium under high vacuum, dilute air

PDF | Niobium metal foils were heat-treated at 900°C under different conditions and in situ investigated with time-resolved X-ray absorption.

The oxidation behaviors of high-purity niobium for superconducting ...

A fundamental understanding of impact mechanism of vacuum heat treatment on high-purity niobium. · The medium temperature heat-treatment niobium samples showed a ...

High-temperature treatments of niobium under high vacuum, dilute air

Supporting: 1, Mentioning: 5 - Niobium metal foils were heat-treated at 900°C under different conditions and in situ investigated with time-resolved X-ray ...

A study on the high temperature reaction of niobium pentoxide with ...

pct., the reaction was carried out at 1900°C under high vacuum in a vacuum induction furnace followed by treatment in the electron beam melting furnace to ...

Systematic study of niobium thermal treatments for superconducting ...

In the present work we employ variable-energy synchrotron x-ray photoelectron spectroscopy (XPS), to study the niobium surface subjected to the ...

A new surface treatment for niobium superconducting cavities

The firing of niobium cavities under vacuum at very high temperature is known to be a particularly effective method for cleaning the surface and for ...

ultra-low surface resistance via vacuum heat treatment of ...

The process starts with a high temperature heat treatment of a cavity in a vacuum ... Melnychuk, “Ultra-high quality factors in superconducting niobium cavities ...

The oxidation behaviors of high-purity niobium for superconducting ...

A fundamental understanding of impact mechanism of vacuum heat treatment on high-purity niobium. ... The medium temperature heat-treatment niobium samples showed ...

Simultaneous laser polishing and N-doping of niobium

Superconducting niobium is the base material for many modern particle accelerators. The high cleanliness requirements in all radio frequency ...

Measurements of Hydrogen Content in Bulk Niobium by Thermal ...

cavities at 800°C or higher in an Ultra-High Vacuum. (UHV) oven or by using a fast cool down in the temperature range of 70 K < T < 130 K. It is clear that ...

MASTER - OSTI.GOV

K/R4>2-K (ls kgauss) - 6S00] and low flow stress [rly = 460 gm/iam ] was obtained after a high temperature anneal (2350°C) in high vacuum (2 x 10" torr).

Ultralow Surface Resistance via Vacuum Heat Treatment of ...

In one cavity, measurements of surface resistance versus temperature showed an extremely small residual resistance of just 0.63 ± 0.06 nΩ at 16 ...

Design and fabrication of a high-temperature high-vacuum furnace ...

Design and fabrication of a high-temperature high-vacuum furnace to heat treat niobium for superconducting radio frequency cavities ; In Collections: Electronic ...

Recent Results of High Temperature Vacuum Heat Treatment ...

This furnace is mainly used for the reduction of interstitial hydrogen in niobium. VH2T2 is an effective process for curing SRF cavities from ...

The oxidation behaviors of high-purity niobium for superconducting ...

The oxidation behaviors of high-purity niobium for superconducting radio-frequency cavity application in vacuum heat treatment ... To read the full-text of this ...

In-situ Synchrotron X-Ray Photoelectron Spectroscopy Study of ...

The final vacuum thermal treatment (or baking) of superconducting radiofrequency (SRF) niobium cavities is a key technological step in cavity ...

Effect of high temperature heat treatments on the quality factor of a ...

Large-grain Nb has become a viable alternative to fine-grain Nb for the fabrication of superconducting radio-frequency cavities. In this ...

Hydrogen Uptake by High Purity Niobium Studied by Nuclear ...

2. Prior to acid treatment, the niobium samples were degassed at Jefferson Laboratory by heating in a high temperature vacuum furnace to remove as much hydrogen ...