Nano SnO2/Fe2O3 blending doped silver base electric contact alloy and preparing process thereof

Abstract

The invention belongs to a nanometer confounded additive composite silver based electric contact alloy and preparation technique thereof, especially to a component of nanometer SnO2 / Fe3O3 blended silver doped based electric contact alloy electrical contacts material and preparation technique thereof, wherein, co-precipitating and roasting the SnO2 and Fe2O3 chemically for preparing confounded nanometer powder with different granularity, high-energy ball milling the mixed powder of Ag, SnO2 and Fe2O3 in air or nitrogen gas environment, and shaping them. The invention can improve the moldability and electrical property of silver-based electrical contacts material and reduce the contact point burning loss rate and improve its service life.

Description

Technical field:

[0001] The invention belongs to a nano-hybrid additive composite silver-based electrical contact alloy and its preparation process, in particular to nano-SnO 2 / Fe 2 o 3 Composition and preparation process of blended doped silver-based electrical contact alloy electrical contact material. Background technique:

[0002] Currently known silver-based electrical contact materials are: 1. Prepare nano-SnO by high-energy ball milling 2 Silver-based electrical contact alloy (patent application number 00135475.2); 2. Preparation of nano-SnO by sol-gel method 2 , ZnO, TiO 2 and rare earth components to prepare nano-silver-based electrical contact alloys (patent application number 02146696.3); 3. Use doped metal oxides (including SnO 2 , ZrO, ZnO, TiO, MnO, WO, etc.) silver-based electrical contact alloys (patent application number 03100430.X), and silver-based electrical contact materials that undergo boron or carbon, nitrogen, and boron ternary co-infiltration ...

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