Vanadium dioxide

Patent metadata

Field	Value
Publication number	US-2017349495-A1
Application number	US-201715686254-A
Country	US
Kind code	A1
Filing date	Aug 25, 2017
Priority date	Feb 27, 2015
Publication date	Dec 7, 2017
Grant date	—

Abstract

The present application provides vanadium dioxide doped with Ti, or vanadium dioxide further doped with other atoms selected from the group of W, Ta, Mo, and Nb. The vanadium dioxide of the present application is excellent in moisture resistance and in which deterioration of endothermic characteristics due to moisture is suppressed.

First claim

1 . Vanadium dioxide doped with Ti, or vanadium dioxide further doped with other atoms selected from the group consisting of W, Ta, Mo, and Nb, wherein:
when the other atoms are W, the content of the other atoms in parts by mole is more than 0 part by mole and 5 parts by mole or less, with respect to 100 parts by mole in total of vanadium, Ti and the other atoms, when the other atoms are Ta, Mo, or Nb, the content of the other atoms in parts by mole is more than 0 part by mole and 15 parts by mole or less, with respect to 100 parts by mole in total of vanadium, Ti and the other atoms, and the content of titanium in parts by mole is 2 parts by mole or more and 30 parts by mole or less, with respect to 100 parts by mole in total of vanadium, Ti and the other atoms.

2 . The vanadium dioxide according to claim 1 , wherein the content of titanium in parts by mole is 5 parts by mole or more and 10 parts by mole or less, with respect to 100 parts by mole in total of vanadium, Ti and the other atoms.

3 . Vanadium dioxide having the formula:
V 1-x-y Ti x M y O 2
wherein, M is W, Ta, Mo, or Nb,
x is 0.02 or more and 0.3 or less,
y is 0 or more and 0.05 or less when M is W, and
y is 0 or more and 0.15 or less when M is Ta, Mo, or Nb.

4 . The vanadium dioxide according to claim 3 , wherein x is 0.05 or more and 0.1 or less.

5 . A ceramic material comprising the vanadium dioxide according to claim 1 .

6 . The ceramic material according to claim 5 , wherein the content of the vanadium dioxide is 96 mass % or more.

7 . A cooling device comprising the vanadium dioxide according to claim 1 .

8 . An electronic component comprising the cooling device according to claim 7 .

9 . An electronic device comprising the cooling device according to claim 7 .

10 . A cooling device comprising the ceramic material according to claim 5 .

11 . An electronic device comprising the electronic component according to claim 8 .

12 . A ceramic material comprising the vanadium dioxide according to claim 2 .

13 . A ceramic material comprising the vanadium dioxide according to claim 3 .

14 . A ceramic material comprising the vanadium dioxide according to claim 4 .

15 . The ceramic material according to claim 12 , wherein the content of the vanadium dioxide is 96 mass % or more.

16 . The ceramic material according to claim 13 , wherein the content of the vanadium dioxide is 96 mass % or more.

17 . The ceramic material according to claim 14 , wherein the content of the vanadium dioxide is 96 mass % or more.

18 . A cooling device comprising the vanadium dioxide according to claim 2 .

19 . A cooling device comprising the vanadium dioxide according to claim 3 .

20 . A cooling device comprising the vanadium dioxide according to claim 4 .

Assignees

• Murata Manufacturing Co

Inventors

• Hirose Sakyo

Classifications

• C01G33/006

  Compounds containing niobium, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

• C04B35/6268

  characterised by the applied pressure or type of atmosphere, e.g. in vacuum, hydrogen or a specific oxygen pressure · CPC title

• C04B2235/604

  Pressing at temperatures other than sintering temperatures · CPC title

• C01G35/006

  Compounds containing tantalum, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

• C01P2002/50

  Solid solutions · CPC title