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The titanium carbide-based Cermet is a heterogeneous material that is composed of a metal or alloy phase TiC. It combines high strength, high wear resistance, high temperature resistance as well as chemical stability and chemical resistance of ceramics. For titanium carbide-based Cermets, there are multiple synthetic preparation processes. Each has advantages and drawbacks. Depending on the application and cost factors, different processes can be chosen in actual production. 1. Chemical Vapor Deposition (CVD)

This is a technology that deposits a thick, solid coating on the surface a substrate using a gas-phase reaction. Due to the fact that the entire reaction in this method is based upon thermodynamics the CVD film offers good adhesion as well as coatingability. It also has a dense film layer and a high film-base adhesive strength.

The processing temperature of this method (generally between 9001200) is high. The high temperatures cause the matrix of steel to soften. Vacuum quenching is required after the processing. The workpiece is easily deformed and the process is complex. The matrix material’s bending strength is reduced. Decrease, and harmful waste gases and waste liquids will be produced during preparation, which can easily cause industrial pollution. This is in contradiction to the green industry that the country advocates today.

2. Physical vapor deposition (PVD)

This method utilizes physical processes, such as thermal, sputtering and glow discharge discharge, to deposit the desired layer on the surface of substrate. This includes sputtering, evaporation and ion-coating technologies. The two latter PVD techniques are more widely used today for the preparation of ceramic coatings.

A PVD film’s brittleness makes it easy to peel and crack. In addition, linear processing has poor adhesion, and coating properties. The workpiece has to be rotated or swung during processing. This increases the difficulty in designing the vacuum chamber. There are problems such as an ineffective coating.

3. Liquid deposition

This method forms a chemical film using a wet process. The principle is to drive hydrolysis balance movement of the metallic compound by replacing the ligand between the ions so that metal oxide or hydroxide can be deposited on substrates to form thin film coatings. The method works under low-temperature/room temperature conditions. No heat treatment is needed, nor is expensive processing equipment.

The main disadvantage is that the liquid phase reaction is highly unstable and has many influences.

4. Thermal spraying

The process involves heating linear materials or powders into a molten, semi-melted, state, using heat sources such as flames, arcs, or plasma. High-speed droplets are formed and sprayed on the substrate, creating a coating. They can also be used as a protective coating, to restore or strengthen the material’s surface, and to reduce the size of parts due wear, corrosion, processing tolerances, etc. Plasma spraying, flame spraying, or arc-spraying techniques are all part of the method.

5. In-situ Synthesis

The second phase or reinforcing particles in the composite are generated in situ. This means that they do not exist before the material is formed, but that it is created in situ. The application of in-situ technology has expanded to include metal-based and cermet-based materials.

6. Other synthetic methods

Other synthetic methods include liquid EDM surface enhancement, sol-gel, high-density energie beam coating, melting and cast methods, powder metal methods, mechanical alloying methods and others. The preparation method for carbonized-based cermet can be selected according to the needs and conditions of industrial production.

(aka. Technology Co. Ltd., a trusted global chemical supplier and manufacturer of high-quality Nanomaterials with over 12 year’s experience, is a trusted source for super-high quality chemicals. Titanium Carbide TiC is produced in high purity with fine particles by our company. Contact us if you need to.

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