Thermal barrier coated component and method for producing thermal barrier coated component

Patent metadata

Field	Value
Publication number	US-11913383-B2
Application number	US-202017615895-A
Country	US
Kind code	B2
Filing date	Jun 12, 2020
Priority date	Jul 2, 2019
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

The present invention provides a thermal barrier coated component, monitoring or evaluation of the soundness of which is able to be adequately carried out on the basis of the thermal boundary conditions that are detected by a sensor. A thermal barrier coated component according to the present invention comprises: a base material; a first bond coat layer that is a metal bonding layer formed on the base material; a sensor unit that comprises a sensor and a conductive wire, which are formed on the first bond coat layer; a second bond coat layer that is formed on the first bond coat layer so as to cover at least the sensor unit, while having a surface roughness higher than that of the first bond coat layer; and a top coat layer that is formed on the second bond coat layer.

First claim

The invention claimed is:

1. A thermal barrier coated component comprising:
a base material;
a first bond coat layer that is a metal bonding layer formed on the base material;
a sensor unit disposed on the first bond coat layer and including a sensor and a conductive wire;
a second bond coat layer that is formed on the first bond coat layer so as to cover at least the sensor unit such that the sensor is arranged between the first bond coat layer and the second bond coat layer, wherein the second bond coat layer has a surface roughness higher than that of the first bond coat layer; and
a top coat layer that is formed on the second bond coat layer.

2. The thermal barrier coated component according to claim 1 ,
wherein the second bond coat layer includes more pores than the first bond coat layer.

3. The thermal barrier coated component according to claim 2 ,
wherein the first bond coat layer has a porosity of 0% by volume or more and 5.0% by volume or less, and
the second bond coat layer has a porosity of 0.1% by volume or more and 10.0% by volume or less.

4. The thermal barrier coated component according to claim 1 ,
wherein the sensor is any one of a thermocouple sensor, a heat flux sensor, a strain sensor, and a sensor that detects a crack generated in the first bond coat layer, the second bond coat layer, and the top coat layer.

5. The thermal barrier coated component according to claim 1 ,
wherein the second bond coat layer is thinner than the first bond coat layer.

6. A method for producing a thermal barrier coated component, comprising:
forming a first bond coat layer, which is a metal bonding layer, on a base material;
disposing a sensor unit including a sensor and a conductive wire on the first bond coat layer;
forming a second bond coat layer having a surface roughness higher than that of the first bond coat layer on the first bond coat layer so as to cover at least the sensor unit such that the sensor is arranged between the first bond coat layer and the second bond coat layer; and
forming a top coat layer on the second bond coat layer.

7. The method for producing a thermal barrier coated component according to claim 6 ,
wherein in the forming of the first bond coat layer, the first bond coat layer is formed by either a high velocity oxygen fuel spraying or a low pressure plasma spraying, and
in the forming of the second bond coat layer, the second bond coat layer is formed by an atmospheric plasma spraying.

8. The method for producing a thermal barrier coated component according to claim 6 ,
wherein the disposing of the sensor unit includes drawing the sensor on the first bond coat layer by spraying.

Assignees

• Mitsubishi Power Ltd
• Mitsubishi Heavy Ind Ltd

Inventors

• Okajima Yoshifumi
• Mega Masahiko
• Torigoe Taiji
• Moriwaki Atsushi
• MAKIGANO Hiroshi
• Tanimoto Koichi

Classifications

• F02C7/24 Primary

  Heat or noise insulation (air intakes having provisions for noise suppression F02C7/045; turbine exhaust heads, chambers, or the like F01D25/30; silencing nozzles of jet-propulsion plants F02K1/00) · CPC title

• C23C4/073

  containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements · CPC title

• C23C4/134 Primary

  Plasma spraying · CPC title

• F01D5/288

  Protective coatings for blades · CPC title

• F01D17/085

  to temperature · CPC title