What type of tests shall be conducted on test specimens for thin layer erosion resistance refractories?

The correct answer involves conducting a series of tests that provide a comprehensive understanding of the performance of thin layer erosion resistance refractories. Specifically, density, permanent linear change, and abrasion resistance are key indicators of how these materials will behave under operational conditions.

Density is important because it influences the strength and thermal conductivity of the refractory material. A higher density typically means better strength and durability, which is crucial for materials exposed to harsh conditions.

Permanent linear change assesses the dimensional stability of the refractory when subjected to high temperatures. This property is critical to ensure that the refractory maintains its shape and integrity during use, which directly correlates to its long-term performance.

Abrasion resistance is vital because it measures how well the refractory can withstand wear and tear from mechanical processes or flowing materials. This characteristic determines how well the refractory will perform in environments that may cause erosion, such as in furnaces and kilns.

Together, these tests provide a multifaceted evaluation of the material’s quality and suitability for its intended application, ensuring it can resist both physical wear and thermal effects over time.