Titanium carbide-based solid solution metal ceramic and preparation method thereof

A cermet and solid solution technology, applied in the field of cermet materials and powder metallurgy, can solve the problems of high energy consumption, long preparation period, difficult control of oxygen content, etc., and achieve low energy consumption, easy control of oxygen content, and low oxygen content. Effect
CN103361533BActive Publication Date: 2014-03-05HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2014-03-05

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Abstract

The invention discloses titanium carbide-based solid solution metal ceramic and a preparation method thereof. The titanium carbide-based solid solution metal ceramic is composed of a hard phase (Ti, W) C solid solution and an adhesive phase Ni, wherein the composite material powder is prepared by mold pressing forming, degreasing and vacuum sintering; the composite material is synthesized by utilizing Ti powder, W powder, Ni powder and graphite powder as raw materials and performing a high-energy ball milling induced self-propagating reaction under argon protection, and the raw materials comprise the following ingredient by mass percent: 40.60-58.02% of Ti powder, 11.02-29.18% of W powder, 15.00-20.00% of Ni powder and 11.94-15.27% of graphite powder. The preparation of solid solution powder is simple in process, short in cycle, low in energy consumption and easy to control the oxygen content, the hardness of the prepared titanium carbide-based solid solution metal ceramic is 89.0-91.8HRA, the bending strength is not smaller than 1680MPa, and the fracture toughness KIC is not smaller than 12.5MPa.m1 / 2, so that the titanium carbide-based solid solution metal ceramic is suitable for serving as high-speed and high-efficiency cutting tools, hot extrusion molds and heat-resistant, corrosion-resistant and wear-resistant parts and components.
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Description

technical field

[0001] The invention belongs to the technical field of cermet materials and powder metallurgy, and in particular relates to a titanium carbide-based solid solution cermet and a preparation method thereof. Background technique

[0002] TiC or Ti(C,N)-based cermet is a particle prepared by powder metallurgy process with TiC or Ti(C,N) as the main hard phase, Ni or Co or (Ni+Co) as the binder phase Reinforced composites. Compared with WC-Co cemented carbide, cermet has better high-temperature red hardness, wear resistance and oxidation resistance, and its friction coefficient with metal is lower. Ideal material for thermal wear and corrosion resistant components. In addition, Ti, the main raw material of cermets, is rich in reserves, and its production cost is only 35-55% of that of cemented carbide, so it has attracted the attention of material researchers. Although by joining Mo 2 C (or Mo), WC and other additives can significantly improve the wettability ...

Claims

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