Refractory metal matrix-ceramic compound multi-component composite material with super-high melting point

Abstract

A refractory metal matrix-ceramic compound multi-component composite material with the super-high melting point is disclosed. At least one ceramic compound A and at least one refractory bonding metal B are fused together by the smelting process to make the multi-component composite material. The fused ingredients of the multi-component composite material are mAnB, and (m+n)max=13. The positive integer m is the number of the kinds of the ceramic components A, and the positive integer n is the number of the kinds of the refractory bonding metals B. The absolute value of the combining enthalpy of the ceramic compound A is larger than the absolute value of the combining enthalpy between the ceramic compound A and the refractory bonding metal B. The multi-component composite material has the properties including over 3000° C. melting point, high stability, hardness, ductility, and fusibility in high or low temperature, fast production, and low cost.

Description

[0001]The current application claims a foreign priority to the patent application of Taiwan No. 102122225 filed on Jun. 21, 2013.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present disclosure relates to a refractory metal matrix-ceramic compound multi-component composite material with super-high melting point; in particular, to a multi-component composite material (metal matrix composite material) which is made of ceramic compound “A” fused in refractory bonding metal “B”. The multi-component composite material has the properties with high melting point, high hardness, high strength, and good ductility.[0004]2. Description of Related Art[0005]Presently, all kinds of the cemented carbides are manufactured by using sintering process, and the microstructure of the sintered product is mainly of the fine particle of the carbides (such as tungsten carbide, WC) and the cemented metal (such as cobalt, Co). When using 1600 degrees Celsius for sintering the fine partic...

AI Technical Summary

Benefits of technology

The present patent is related to a new type of material made by melting ceramic compounds and refractory metals. This material has exceptionally high melting point, hardness, strength, and ductility. The refractory metal helps to increase the solubility of the ceramic compound, making it easier to fuse them together. The technical effect of this patent is the creation of a new multi-component composite material with excellent properties.

Problems solved by technology

On the other hand, when using arc smelting process with 3500 degrees Celsius, the porosity thereof is eliminated and the ductility thereof increases, the microstructure may be relatively large, therefore may lower the hardness and the strength.

Although the products manufactured using a sintering process have relatively high hardness and strength, the processes of sintering are exquisite and complicated, and the ductility of the product needs further improvement.

However, if a refractory metal is used as cemented metal to replace the conventional cemented metals, such as Co and Ni, in sintering process, the refractory metal could not be in its liquid state, increasing the difficulty of using the refractory metal in the sintering process.

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