Ceramic material

Patent metadata

Field	Value
Publication number	US-9868672-B2
Application number	US-201715406850-A
Country	US
Kind code	B2
Filing date	Jan 16, 2017
Priority date	Jul 17, 2014
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

The present disclosure provides a ceramic material containing a vanadium oxide, and 50 to 400 ppm by mass of nitrogen with respect to the vanadium oxide. The ceramic material according to the present disclosure less varies in the amount of heat absorption. A cooling device comprising the ceramic material is also provided.

First claim

The invention claimed is:

1. A ceramic material comprising: a vanadium oxide; and 50 to 400 ppm by mass of nitrogen with respect to the vanadium oxide.

2. The ceramic material according to claim 1 , wherein the vanadium oxide comprises vanadium and M where M is at least one selected from W, Ta, Mo, and Nb, and an M content in parts by mol is 0 parts by mol or more and approximately 5 parts by mol or less when a total amount of the vanadium and the M is 100 parts by mol.

3. The ceramic material according to claim 1 , wherein the vanadium oxide is a composite oxide comprising vanadium and A where A is Li or Na, wherein an A content in parts by mol is approximately 50 parts by mol or more and approximately 110 parts by mol or less when an amount of vanadium is 100 parts by mol.

4. The ceramic material according to claim 1 , wherein the vanadium oxide is a composite oxide comprising vanadium and A where A is Li or Na, and at least one transition metal selected from titanium, cobalt, iron, and nickel,
a molar ratio between the vanadium and the transition metal falls within a range of 995:5 to 850:150, and
a molar ratio between a total amount of the vanadium and the transition metal, and A falls within a range of 100:70 to 100:110.

5. The ceramic material according to claim 1 , wherein the vanadium oxide comprises one or more oxides represented by the following formula:
V 1-x M x O 2

wherein, in the formula, M is W, Ta, Mo, or Nb, and x is 0 or more and 0.05 or less,
or the following formula:
A y V 1-z M a z O 2

wherein, in the formula, A is Li or Na, and M a is a transition metal; and y is 0.5 or more and 1.1 or less, and z is 0 or more and 0.15 or less.

6. The ceramic material according to claim 1 , wherein the vanadium oxide comprises one or more oxides represented by the following formula:
V 1-x M x O 2

wherein, in the formula, M is W, Ta, Mo, or Nb, and x is 0 or more and 0.05 or less.

7. The ceramic material according to claim 1 , wherein the vanadium oxide is a vanadium oxide doped with Ti, or further doped with another atom selected from the group consisting of W, Ta, Mo, and Nb,
when the another atom is W, a content of the another atom in parts by mol is more than 0 parts by mol and 5 parts by mol or less with respect to 100 parts by mol in total of the vanadium, the Ti, and the another atom,
when the another atom is Ta, Mo, or Nb, the content of the another atom in parts by mol is more than 0 parts by mol and 15 parts by mol or less with respect to 100 parts by mol in total of the vanadium, the Ti, and the another atom, and
a titanium content in parts by mol is 2 parts by mol or more and 30 parts by mol or less with respect to 100 parts by mol in total of the vanadium, the Ti, and the another atom.

8. The ceramic material according to claim 7 , wherein the titanium content in parts by mol is 5 parts by mol or more and 10 parts by mol or less with respect to 100 parts by mol in total of the vanadium, the Ti, and the another atom.

9. The ceramic material according to claim 1 , wherein the vanadium oxide comprises one or more oxides represented by the following formula:
V 1-x-y Ti x M y O 2

wherein, in the formula, M is W, Ta, Mo, or Nb,
x is 0.02 or more and 0.30 or less,
y is 0 or more, and
y is 0.05 or less when M is W, or
y is 0.15 or less when M is Ta, Mo, or Nb.

10. The ceramic material according to claim 9 , wherein x is 0.05 or more and 0.10 or less.

11. A cooling device comprising the ceramic material according to claim 1 .

12. An electronic component comprising the cooling device according to claim 11 .

13. An electronic device comprising one of the cooling device according to claim 11 and the electronic component according to claim 12 .

14. A cooling device comprising the ceramic material according to claim 2 .

15. A cooling device comprising the ceramic material according to claim 3 .

16. A cooling device comprising the ceramic material according to claim 4 .

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

18. A cooling device comprising the ceramic material according to claim 6 .

19. A cooling device comprising the ceramic material according to claim 7 .

20. A cooling device comprising the ceramic material according to claim 8 .

Assignees

• Murata Manufacturing Co

Inventors

• Hirose Sakyo

Classifications

• H10W40/00

  Arrangements for thermal protection or thermal control (integrated devices comprising arrangements for thermal protection H10D89/60) · CPC title

• H10W40/259

  Ceramics or glasses (H10W40/254, H10W40/257, H10W40/255, H10W40/251, H10W40/253 take precedence) · CPC title

• C01P2002/88

  by thermal analysis data, e.g. TGA, DTA, DSC · CPC title

• C04B2235/722

  Nitrogen content · CPC title

• C04B2235/72

  Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics · CPC title