Carbon Solid Lubricant Block
Overview
Carbon Solid Lubricant Block is an advanced dry lubricant composed primarily of graphite or other carbon allotropes. Unlike liquid lubricants, it provides consistent performance in extreme conditions where conventional lubricants would degrade or evaporate. This material has been widely adopted in industrial applications since the mid-20th century, particularly in sectors requiring maintenance-free lubrication solutions. Its development was driven by the aerospace industry's need for reliable lubrication in vacuum and high-temperature environments.
Physical and Chemical Properties
The material exhibits exceptional thermal stability, maintaining its lubricating properties up to 500°C in air and even higher temperatures in inert atmospheres. Its layered crystal structure allows for easy shear between planes, resulting in naturally low friction coefficients (typically 0.1-0.3). Chemically inert to most substances, carbon blocks resist oxidation at moderate temperatures and are unaffected by radiation. The material shows excellent electrical conductivity (3-5 × 10^5 S/m) while remaining thermally stable across a broad temperature range (-200°C to +3500°C in vacuum).
Main Applications
Primary industrial uses include high-temperature bearings in steel mills, vacuum system components in semiconductor manufacturing, and moving parts in aerospace applications. The blocks are often machined into specific shapes for custom applications. In metallurgy, they serve as continuous casting mold lubricants. The automotive industry utilizes them in high-performance braking systems. Emerging applications include nuclear reactor components and renewable energy systems where traditional lubricants are unsuitable.
Safety and Storage
While generally safe, precautions should be taken during machining to prevent inhalation of fine particles. The material may create slippery surfaces, requiring proper workplace safety measures. Storage requires protection from moisture to prevent any potential swelling or degradation. Optimal conditions include relative humidity below 60% and temperatures between 10-30°C. Industrial-grade blocks should be stored in original packaging until use to prevent contamination.
B2B Procurement Guide
Industrial buyers should specify technical requirements including: dimensions (±0.5mm tolerance typically available), density (1.5-2.2 g/cm³ options), thermal conductivity (50-400 W/mK grades), and any required certifications (ISO 9001, aerospace standards). Lead times vary from 2-8 weeks depending on customization. Bulk purchases (100kg+) often qualify for 15-30% discounts. Quality indicators include consistent graphite flake orientation and absence of visible impurities. Always request material test reports for critical applications.
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