Nanocrystalline carbon titanium carbonitride powder containing grain growing inhibitor and preparation thereof

Abstract

The invention provides a nano-crystal titanium carbonitride powder containing a crystal grain growth inhibitor and a method for preparing the same. The titanium carbonitride powder takes titanium containing base material, reducing agent and vanadium containing ammonium salt as preparation raw materials. The preparation method comprises that: the materials prepared according to the mixing ratio are placed in ball-milling equipment for ball-milling and mixing to prepare precursor powder, or dissolved in deionized water / distilled water to prepare suspension, the suspension is subjected to dewatering, drying, heating and quenching treatments to prepare the precursor powder, or subjected to spray drying to prepare the precursor powder; the prepared precursor powder is placed in a reduction reaction furnace and subjected to a carbonization reduction reaction at a temperature of between 900 and 1,450 DEG C for 0.5 to 4 hours in the atmosphere of nitrogen gas, ammonia gas or nitrogen-ammonia gas. The titanium carbonitride powder has the characteristics of even mixing, fine crystal grain of the powder, low manufacturing cost, simple process, the suitability for industrialized production and the like, and can better meet application requirements in fields such as high-performance titanium carbonitride based cermet materials and products.

Description

technical field [0001] The invention relates to titanium carbonitride (Ti(C, N))-based cermet material technology, more specifically, relates to a titanium carbonitride powder containing a grain growth inhibitor and a preparation method thereof. Background technique [0002] Titanium carbonitride (Ti(C,N))-based cermet materials have good thermal conductivity, electrical conductivity and chemical stability due to their high melting point, high hardness, wear resistance, corrosion resistance, and good oxidation resistance. Therefore, it is widely used in the preparation of cutting tools and various wear-resistant products in the modern manufacturing industry. It is the most successful substitute for tungsten carbide (WC) series cemented carbide, has broad development prospects, and can solve the problem of tungsten resource depletion. [0003] In order to achieve the high performance of Ti(C,N)-based cermet materials and products, the control of their microstructure and the u...

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Problems solved by technology

[0005] For the defects existing in the prior art of Ti(C, N)-based cermet materials, the purpose of the present invention is to provide a nano Crystalline titanium carbonitride powder and preparation method thereof, in order to solve the long-standing problems of the existing Ti(C,N)-based cermet materials such as the difficulty in matching the particle size between the components and the difficulty in mixing uniformly.