Product Name: Titanium Silicon Carbide (Ti2SiC) 
Specification: 0.8-10um (D50) 
Appearance: Irregular 
Color: Black Grey 
Features: Good conductivity, thermal conductivity, high temperature strength, oxidation resistance, and thermal shock resistance 
Usage: Aerospace, defense, electric vehicles, new displays, electrocatalysts, and other fields

Titanium carbide silicon Ti3SiC2 

Form: Black powder 
Particle size: 325 mesh (12.9 microns) 
Density (grams/cubic centimeter): 4.53 
Cas：12202-82-3 
Molecular weight: 196.0 
Purity: 98% 
In recent years, materials scientists have synthesized a new class of 312 type ceramic materials with the general formula M3XZ2, where M is one or several transition metal elements (such as Ti, V, etc.), X is one or several main group elements, multiple III and IV main group elements (such as Al, Ge, Si, etc.), and Z is one or several non-metallic elements (such as C, N, B, etc.). Currently, the 312 type ternary compounds studied by people mainly include Ti3SiC2, Ti3AlC2, and Ti3GeC2. They have the same crystal structure and belong to the P63/mmc space group. The typical representative of this type of compound is Ti3SiC2. This article briefly introduces Ti3SiC2 ceramic material. 
1、 What is Ti3SiC2 layered ceramic material 
Titanium silicon carbide (Ti3SiC2) is a comprehensive ceramic material that not only has high temperature resistance, oxidation resistance, and high strength, but also has the conductivity, thermal conductivity, processability, plasticity, and other properties of metallic materials. The development opportunity of this material was roughly in the 1980s. Due to the rapid development of reinforcing agents such as fibers and whiskers, as well as the requirements of high thrust to weight ratio engines in aviation, ceramic based composite materials became a research hotspot. The use of fibers and whiskers for reinforcement improves its toughness, but due to high preparation costs and poor reliability, it is still difficult to apply. Researchers began to explore high-temperature materials with both metallic and ceramic properties to address this issue, and ultimately found a titanium silicon carbide (Ti3SiC2) in the Ti-Si-C system. Ti3SiC2 has both metallic properties and excellent thermal and electrical conductivity at room temperature, with relatively low Vickers hardness and high elastic modulus; Has ductility at room temperature, can be processed like metal, and has plasticity at high temperatures; At the same time, it also has the properties of ceramic materials, with high yield strength, high melting point, high thermal stability, and good oxidation resistance, which can maintain high strength at high temperatures. More significantly, it has a lower friction coefficient and good self-lubricating performance compared to traditional solid lubricants such as graphite and molybdenum disulfide. 
As early as December 2005, the Ministry of Science and Technology of China released a dynamic stating that a new generation of high-speed train pantograph skateboard with independent intellectual property rights and made of Ti3SiC2 series conductive ceramics was successfully developed in China under the theme of high-performance structural materials technology supported by the National 863 Program. The project undertaking unit, Beijing Jiaotong University, has successively overcome the batch synthesis technology of high-purity Ti3SiC2, Ti3AlC2, Ti2SnC and other ceramic powders, skateboard manufacturing process, completed the research on physical and chemical properties, and skateboard loading assessment and operation after two years. The Ti3SiC2 ceramic skateboard successfully developed by the research group has significant characteristics such as high conductivity, impact resistance, wear resistance, arc erosion resistance, and low wear on contact wires. It effectively solves the problems of fast wear, easy breakage, and large damage to contact wires of carbon based skateboards and powder metallurgy skateboards used at that time both domestically and internationally. The Ti3SiC2 series ceramic skateboard successfully developed at that time played an important role in the high-speed development of China's railways. 
2、 Main properties of Ti3SiC2 layered ceramic material 
Ti3SiC2 combines the characteristics of ceramics and metals, with high elastic modulus, high melting point, and high-temperature stability reflecting properties similar to ceramics; The high conductivity, high elastic modulus, high melting point, and high temperature stability reflect its ceramic like properties. 
Table 1. Main performance indicators (room temperature) of Ti3SiC2 ceramic material. The study on the damage resistance of Ti3SiC2 shows that there is a large pseudo plastic damage zone under the indentation. The reason is that Ti3SiC2 has multiple energy absorption mechanisms during contact damage, such as diffusion microcracks, crack deflection, grain extraction, and grain bending. Moreover, this type of material has excellent self-lubricating properties. This material has broad application prospects as a high-temperature structural material, electric brush material, self-lubricating material, heat exchange material, etc. However, its relatively low hardness, wear resistance, and lower oxidation resistance compared to other ceramic materials limit its application in sensitive situations such as fatigue resistance, wear resistance, and oxidation resistance. 
3、 Application of Ti3SiC2 Layered Ceramic Material 
（1） Biomedical applications 
In dentistry, it is required that the materials or components used in the oral environment can withstand long-term oxidation, maintain stability, and have good processability and plasticity. Ti3SiC2 has both ceramic properties and metallic characteristics, as well as good biocompatibility, making its application in the human body possible. 
Ti3SiC2 can be processed into precisely sized threads without the need for lubricants, making it suitable for use as implants or restorations in oral healthcare clinical applications. 
Compared with zirconia (1.9 × 105MPa), the elastic modulus of Ti3SiC2 is closer to enamel or dentin, which increases its potential for application in post or porcelain crowns. 
The Ti3SiC2 material obtained from self propagating high temperature contains a porous structure, which may be easier to organize and bond with. The low coefficient of friction makes it possible to apply it in orthodontics to increase sliding and reduce frictional resistance. Corrosion resistance and oxidation resistance are important conditions for the application of this material in oral environments and maintaining its stability. This material and porcelain powder are both ceramic materials, and its bonding degree may be better than that of metal and porcelain. Therefore, for porcelain fused to metal crowns, its application range may be wider. However, among the currently known methods for preparing Ti3SiC2, it is necessary to improve the preparation process in order to obtain pure Ti3SiC2 blocks and thus understand more accurate properties of the material. And further laboratory and clinical studies are needed to confirm the biocompatibility and oral clinical practicality of this material. 
（2） Application on refractory materials 
With the promotion of rapid firing technology in the ceramic industry, the cycle period of kiln furniture is becoming shorter and the usage conditions are more stringent. Therefore, it is necessary to continuously improve the thermal shock resistance of kiln furniture materials to meet the development needs of rapid firing technology in the ceramic industry. As a type of advanced refractory material, the quality of kiln furniture has a significant impact on the quality of fired products. Ti3SiC2 ceramic material is insensitive to thermal shock, and its unique layered structure and plastic behavior at high temperatures can alleviate the effect of thermal stress. The residual strength of the material after thermal shock at △ T=1400 ℃ is still above 300MPa, and the material with the best thermal shock resistance can withstand a temperature difference of 900 ℃. At the same time, Ti3SiC2 ceramic material has the advantages of good chemical corrosion resistance, easy processing, and low relative cost of raw materials, making it an ideal kiln material that can be developed.