Rectangular alumina ceramic block

High-wear-resistant rectangular alumina ceramic blocks are a high-performance industrial ceramic material with the following core characteristics and application advantages:

Material Characteristics

1. Ultra-high hardness and wear resistance: Mohs hardness reaches level 9 (second only to diamond), and wear resistance is 20 times that of stainless steel and 266 times that of manganese steel. After two years of continuous operation in a mining crusher, the wear is less than 1mm. Density ≥3.5g/cm³ (95% alumina can reach 3.7g/cm³), compressive strength ≥850MPa, and flexural strength ≥290MPa.

2. High temperature resistance and corrosion resistance: It can withstand high temperatures of 1400℃, and shows no significant wear after 5 years of high-temperature ash erosion at 800℃. Weight loss is <0.01g after soaking in a 30% sulfuric acid solution for one year. It has strong surface hydrophobicity and resistance to acid and alkali corrosion.

3. Insulation and thermal conductivity: It combines high insulation and thermal conductivity (thermal conductivity 1 W/m·K), making it suitable for electronic packaging substrates.

Product Specifications and Process

1. Size customization: Common specifications include 10×145×2mm, 25×100mm, etc., and non-standard customization is supported (e.g., 100×100×1mm).

2. Manufacturing process: Using 99.7% high-purity alumina powder, formed by dry pressing, slip casting, isostatic pressing, or high-temperature sintering. The powder requires ultra-fine processing (particle size <1μm).

Typical Application Scenarios

1. Mining machinery: Crusher liners can increase service life to more than 8 times that of manganese steel, reducing ore contamination.

2. Power and chemical industries: High-temperature corrosion resistance for ash pipelines and reactor linings, extending equipment replacement cycles.

3. Electronics industry: Heat dissipation substrate for 5G base station power amplifiers.

Supports custom specifications.