High-strength platinum-based electric contact material and preparation method thereof

Abstract

The invention discloses a high-strength platinum-based electric contact material and a preparation method thereof. The high-strength platinum-based electric contact material comprises the following components in percentage by mass: 1 to 5 percent of Au; 1 to 5 percent of Ni; and the balance of Pt. According to the high-strength platinum-based electric contact material and the preparation method thereof provided by the invention, the tensile strength of a platinum-based alloy wire ranges from 900 MPa to 1150 MPa, the Vickers hardness ranges from 300 HV to 360 HV, the resistivity ranges from 25 mu omega.cm to 27 mu omega.cm, the comprehensive performance is improved, the machining performance is excellent, the yield is high, and the corrosion resistance is good.

Description

technical field

[0001] The invention relates to the field of electrical contact technology, in particular to a high-strength platinum-based electrical contact material and a preparation method thereof. Background technique

[0002] As a kind of functional material for power transmission and signal transmission, electrical contact materials are mainly used in various switches, relays, controllers, micro-motors and other electronic components, including contacts, brushes, slip rings, commutators, etc. . Conductive slip rings are important electromechanical components of spaceborne products. The performance, quality and service life of brush wires in conductive slip rings directly affect the use of products. With the development of modern industry, higher requirements are constantly put forward for the performance of electrical contact materials. In order to ensure the reliability of aerospace and precision instruments, brush materials need to have a large elastic modulus, lo...

Images