Copper-doped glasses and methods of manufacture

Patent metadata

Field	Value
Publication number	US-10125048-B2
Application number	US-201715432387-A
Country	US
Kind code	B2
Filing date	Feb 14, 2017
Priority date	Feb 19, 2016
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A copper dopant delivery powder comprising a fused silica powder and a Cu 2 S powder. A method of making the copper dopant delivery powder. A method of making a copper-doped glass comprising placing a target glass in a container, packing a composite SiO.CuS dopant powder around the target glass and heating the container and SiO.CuS dopant powder to a temperature of between 800° C. and 1150° C. A copper-doped glass comprising a glass comprising copper-doping wherein the copper-doped glass was formed by covering the glass with a fused silica powder and a Cu 2 S powder, wherein the fused silica powder and the Cu 2 S powder are mixed in varying ratios of Cu 2 S to silica represented by the formula (SiO 2 ) (1-x) (Cu 2 S) x and heating to a temperature of between 800° C. and 1150° C.

First claim

What we claim is:

1. A copper dopant delivery powder comprising:
a fused silica powder; and
a Cu 2 S powder;
wherein the fused silica powder and the Cu 2 S powder is represented by the formula (SiO 2 ) (1-x) (Cu 2 S) x ;
wherein the copper dopant delivery powder is ground upon cooling after heating to 1100° C. for about 5 hours to produce a uniformly mixed powder comprising particles in the range of 10 nm-50 μm; and
wherein the copper dopant delivery powder is chemically modified by heating and comprises SiO 2 , CuS, Cu 2 S, CuO and Cu 2 O with copper concentrations from 0.01 weight percent to 10 weight percent.

2. A method of making a copper dopant delivery powder comprising the steps of:
providing a fused silica powder;
providing a Cu 2 S powder;
mixing the fused silica powder and the Cu 2 S powder; and
heating the fused silica powder and the Cu 2 S powder to a temperature of 1100° C.;
wherein the fused silica powder and the Cu 2 S powder are mixed and represented by the formula (SiO 2 ) (1-x) (Cu 2 S) x .

3. The method of making a copper dopant delivery powder of claim 2 further comprising the steps of:
crushing and milling the heated copper dopant delivery powder mixture after it has cooled to yield a uniform dopant delivery powder with particle sizes between 10 nm to 50 microns.

4. The method of making a copper dopant delivery powder of claim 2 wherein the step of mixing the fused silica powder and the Cu 2 S powder comprises mixing the fused silica powder and the Cu 2 S powder represented by the formula (SiO 2 ) (1-x) (Cu 2 S) x to a uniformly mixed powder and wherein the step of heating is for about 5 hours.

Assignees

• Us Navy

Inventors

• Justus Brian L
• Huston Alan L
• Marcheschi Barbara A

Classifications

• C03C21/008

  in solid phase, e.g. using pastes, powders · CPC title

• C09K11/582

  Chalcogenides · CPC title

• C03C3/076

  with 40% to 90% silica, by weight {(C03C3/045 takes precedence)} · CPC title

• C03C3/06

  with more than 90% silica by weight, e.g. quartz {(C03C3/045 takes precedence)} · CPC title

• C03C2201/40

  containing transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn · CPC title