Outer peripheral coating member and ceramic product

Patent metadata

Field	Value
Publication number	US-10654755-B2
Application number	US-201615568156-A
Country	US
Kind code	B2
Filing date	Apr 8, 2016
Priority date	Apr 23, 2015
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

An outer peripheral coating member contains first particles containing titanium oxide, second particles containing zirconium oxide, third particles containing niobium oxide or aluminum oxide, and a dispersion medium. It is preferable for the first particles to have at least two peak values R1 in a distribution of particle sizes of the first particles. One of the peak values R1 is within a range of 1 to 50 nm, and the other peak value R1 is within a range of 100 to 500 nm.

First claim

The invention claimed is:

1. An outer peripheral coating member comprising:
first particles containing titanium oxide;
second particles containing zirconium oxide;
third particles containing niobium oxide or aluminum oxide; and
a dispersion medium, wherein:
the first particles have not less than two different peak values R1 in a distribution of particle size thereof, and
one of the peak values R1 of the particle sizes of the first particles is within a range of 1 to 50 nm, and the other peak value R1 is within a range of 100 to 500 nm.

2. The outer peripheral coating member according to claim 1 , wherein the third particles have not less than the two different peak values R3 in the distribution of particle sizes thereof.

3. The outer peripheral coating member according to claim 2 , wherein the one peak of the values R3 is within a range of 1 to 100 nm, and the other peak value R3 is within a range of 0.15 to 300 μm.

4. The outer peripheral coating member according to claim 1 , wherein the outer peripheral coating member contains zirconium atoms within a range of 0.01 to 0.5 mole per 1 mole of titanium atoms.

5. The outer peripheral coating member according to claim 1 , wherein the outer peripheral coating member contains zirconium atoms within a range of 0.1 to 0.15 mole, and niobium atoms or aluminum atoms within a range of 0.03 to 2.5 mole per 1 mole of titanium atoms.

6. The outer peripheral coating member according to claim 1 , wherein the outer peripheral coating member contains zirconium atoms within a range of 0.01 to 0.05 mole, and niobium atoms within a range of 0.02 to 0.1 mole per 1 mole of titanium atoms.

7. A ceramic product comprising:
a ceramic member; and
the coated layer, which has been formed by applying the outer peripheral coating member according to claim 1 onto the surface of the ceramic member.

8. A ceramic product comprising:
a ceramic member; and
a layer formed on a surface of the ceramic member,
wherein
the layer is made of first particles containing titanium oxide, second particles containing zirconium oxide, and third particles containing niobium oxide or aluminum oxide,
the first particles have not less than two different peak values R1 in a distribution of particle size thereof, and
one of the peak values R1 of the particle sizes of the first particles is within a range of 1 to 50 nm, and the other peak value R1 is within a range of 100 to 500 nm.

Assignees

• Denso Corp

Inventors

• Oota Mitsunori
• Hattori Emi
• Kato Keiichi

Classifications

• C04B41/87

  Ceramics · CPC title

• C04B41/009

  characterised by the material treated · CPC title

• B01J37/0215

  Coating · CPC title

• C04B2111/82

  Coloured materials · CPC title

• F01N3/2825

  Ceramics (F01N3/2832, F01N3/2835 take precedence) · CPC title