company news about Eliminating UHV Outgassing: Why 0% Porosity Macor® is Critical for Research Vacuum Systems

In the field of Ultra-High Vacuum (UHV) technology, every material introduced into the vacuum chamber undergoes rigorous scrutiny. One of the primary challenges engineers face is "outgassing"—the slow release of gas molecules trapped on or within a material under low-pressure conditions, which destabilizes the system's ultimate vacuum. Macor® Machinable Glass Ceramic has become a benchmark solution for prestigious laboratories worldwide to combat this phenomenon.

1. The Root of Vacuum Failure: Porosity and Outgassing

In environments where pressures drop below $10^{-7}$ mbar, the microscopic integrity of a material determines system stability.

• Limitations of Traditional Ceramics: Many technical ceramics possess inherent micro-porosity. These pores act like "sponges," capturing water vapor and hydrocarbons that continuously release impurities during the drawdown process.

• The Macor® Advantage: It features zero porosity. As a dense, fluorphlogopite-based glass-ceramic, it does not absorb contaminants. Furthermore, it maintains exceptional thermal stability during the bake-out process, ensuring the chamber reaches target vacuum levels rapidly.

2. Key Parametric Evidence: Data-Driven Reliability

For vacuum system integrators, material selection is dictated by verifiable physical parameters:

• Zero Porosity (0%): Ensures no permeability and prevents cross-contamination within high-purity chambers.

• High Bake-out Temperature (800°C): Allows for high-temperature degasification without structural degradation or softening.

• Dielectric Strength (45 kV/mm): Provides robust electrical insulation for high-voltage components within vacuum feedthroughs.

• Non-Magnetic Properties: Critical for applications involving sensitive electron or ion optics where magnetic interference must be zero.

3. Application Scenarios: From Synchrotrons to Particle Physics

Due to its superior machining consistency and vacuum compatibility, Macor® is indispensable in several precision areas:

• Vacuum Feedthroughs: Serving as insulators for sensor leads, it withstands pressure differentials while maintaining a hermetic seal.

• Ion Source Supports: In particle accelerators, Macor® provides mechanical support without distorting magnetic field distributions.

• Cryogenic Equipment: It retains dimensional stability at extremely low temperatures, resisting the embrittlement common in many polymers.

4. Selection Guide: Why Research Labs Prioritize Machinability

In the R&D phase, design iterations are frequent. Macor® allows researchers to modify components in-house using conventional carbide tools. This eliminates the need for expensive specialized molds and drastically reduces lead times—often by over 70% compared to traditional technical ceramics.