Silicon carbide fiber is a ceramic material mainly composed of carbon and silicon, with characteristics such as small specific gravity, high hardness, high strength, high thermal stability, corrosion resistance, and high-temperature oxidation resistance. It can maintain these good properties under extreme or harsh conditions. Therefore, it is widely used in high-tech fields such as aerospace, military weapons and equipment, such as brake pads, engine blades, landing gearbox and fuselage structural materials of Jet aircraft. Metallographic inspection of silicon carbide fiber materials is one of the main methods for evaluating material performance and quality. What are the metallographic consumables used to prepare silicon carbide fiber samples? It is also a concern for metallographic engineers. The editor of pulse detection will give a brief introduction to friends.

The metallographic consumables used in the preparation of silicon carbide fiber samples can be summarized as follows:


1. Diamond cutting blades are recommended for cutting, and precision cutting machines are more suitable for cutting;


2. Grinding, as silicon carbide fiber materials are high hardness materials, the use of silicon carbide sandpaper cannot meet the grinding requirements, and only diamond grinding discs can achieve the grinding effect;


3. Polishing, using diamond suspension as the polishing medium is completely feasible, and combined with a suitable polishing cloth, using a dedicated polishing cooling lubricant during the polishing process is more ideal than using water.


The pulse detection application engineer recommends the following reference process:

Due to the hard and brittle nature of silicon carbide fibers, their cross-sectional edges are prone to fragmentation during grinding. Therefore, when using 3µ When polishing with diamond suspension, a longer polishing time is required to obtain a complete boundary. When using 1µ When fine polishing with m diamond suspension, the effect is better when combined with MicroMet plush polishing cloth.


The above is an introduction to the metallographic consumables used in the preparation of silicon carbide fiber samples. The metallographic consumables used in the preparation plan are all from QMAXIS in the United States, for your reference. If you have any questions, you can contact a pulse detection application engineer for support and assistance.