Rare-earth modified tungsten hard alloy and preparation method thereof

Abstract

The invention discloses a rare-earth modified tungsten hard alloy and a preparation method thereof. The rare-earth modified tungsten hard alloy is prepared by taking tungsten carbide, cobalt powder, vanadium carbide, chromium carbide, tantalum carbide, titanium carbide, rhenium powder, copper nitrate and yttrium oxide as raw materials through the steps such as powder preparation through atomization, alcohol mixing, wet type ball milling, normal-temperature static pressing, paraffin sizing, sintering in sections by using various excellent processes. The quality of the hard alloy is greatly improved, the production cost and consumption are reduced, the production efficiency is increased, and the rare-earth modified tungsten hard alloy is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to the field of hard alloy preparation, in particular to a rare earth modified tungsten hard alloy and a preparation method thereof. Background technique [0002] Tungsten-based alloy is a composite material composed of tungsten as the hard phase and nickel, copper or nickel, iron, etc. as the binder phase. Tungsten-based alloys are widely used in the fields of information, energy, metallurgy, aerospace, national defense, and nuclear industries due to a series of excellent properties such as high density, high strength, good ductility, good toughness, and small thermal expansion coefficient. After entering the 21st century, with the development of science and technology, tungsten-based alloy materials not only play a more important role in the fields of national defense, military industry, aerospace and other fields, but also will be used in electronic information, environment, energy, and power machinery. The rate of increase is...

AI Technical Summary

Problems solved by technology

Due to the particle size factor of tungsten carbide and cobalt powder, and the ratio of tungsten carbide and cobalt powder, the performance of sintered cemented carbide is also very different.