Method for manufacturing high-temperature insulated wire by spraying thermal barrier coating to wrap surface of Pt metal wire

Abstract

The invention provides a method for manufacturing a high-temperature insulated wire by spraying a thermal barrier coating to wrap the surface of a Pt metal wire. According to the method, the high-temperature thermal barrier coating material wraps the surface of the Pt metal wire through a spraying method, and therefore the high-temperature insulated wire keeping the insulation characteristic at the highest temperature of 1200 DEG C is formed; the high-temperature thermal barrier coating material is yttria-stabilized zirconia YSZ or aluminum oxide Al2O3; and the high-temperature insulated wire can replace a traditional naked Pt metal wire lead, the high-temperature insulated wire can keep the good electric insulation characteristic under the high-temperature environment with the temperature up to 1200 DEG C, and the insulated wire has the important actual application value and potential in the field of creativeness high-temperature intelligent sensors and can be widely applied to many aviation industry in-situ integration sensors. The technology of the insulated wire can be compatible with the correlation technique of an existing aircraft engine, and can be used for the aviation commercial process in recent years.

Description

technical field [0001] The invention relates to the technical field of aero-engine measurement, in particular to a method for manufacturing a high-temperature insulated wire by wrapping a sprayed thermal barrier coating on the surface of a Pt wire. The high-temperature insulated wire can be used in the aero-engine measurement technology and belongs to the field of aero-engine. Background technique [0002] In the field of aero-engines, in order to realize the measurement of factors such as temperature and strain force, it is necessary to integrate a series of sensors in situ on the surface of various parts of the aero-engine such as turbine blades to complete the above measurement. During the above measurement process, any integrated sensor needs to be connected to the However, if the lead wire we use is a bare metal wire in this process, it will be interfered by the base metal of the turbine blade and other components, thereby affecting the measurement of the sensor signal. ...

AI Technical Summary

Problems solved by technology

However, the thickness of its metal oxide is only 2-3 microns, and it cannot maintain good bonding force and will fall off at a high temperature of 800-1200 °C

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