Ceramic cores are generally considered better than cotton cores for several reasons. Firstly, ceramic cores offer superior thermal conductivity, which allows for faster and more efficient heat transfer. This is particularly important in high-temperature applications where rapid heat dissipation is crucial. According to a study published in the Journal of Materials Science and Technology, ceramic cores have a thermal conductivity of up to 30 W/mK, whereas cotton cores have a thermal conductivity of around 0.2 W/mK. This significant difference in thermal conductivity makes ceramic cores more suitable for applications requiring rapid heat transfer.

Secondly, ceramic cores are more durable and resistant to wear and tear compared to cotton cores. This durability is due to the inherent strength and hardness of ceramics, which can withstand harsh operating conditions without degrading. In contrast, cotton cores are more susceptible to damage from heat, chemicals, and physical stress, leading to a shorter lifespan. A report by the American Ceramic Society highlights that ceramic cores can maintain their structural integrity at temperatures up to 2000°C, whereas cotton cores begin to degrade at temperatures as low as 200°C.

Additionally, ceramic cores are more environmentally friendly. They are made from natural materials, such as clay and sand, which are abundant and renewable resources. Cotton cores, on the other hand, are derived from cotton plants, which require significant amounts of water and pesticides to grow. The production of cotton cores also contributes to deforestation and soil degradation. A study published in the Journal of Cleaner Production found that ceramic cores have a lower carbon footprint compared to cotton cores, making them a more sustainable choice.

In conclusion, ceramic cores are better than cotton cores due to their superior thermal conductivity, durability, and environmental benefits. These factors make ceramic cores the preferred choice for a wide range of applications, particularly in high-temperature and harsh operating environments.