Zero Porosity Macor Glass Ceramic

What is Zero Porosity Macor Glass Ceramics?

Macor glass-ceramic is a unique machinable glass-ceramic developed by Corning, which consists of a glass matrix and a microcrystalline phase. Its main features are machinability and zero porosity. Its microcrystals are evenly distributed in the glass matrix, filling most of the potential micropores. This makes the material almost completely dense in microstructure. In addition, the material also has excellent mechanical strength, excellent insulation and dimensional stability.

Core Advantages

Mechanical Properties

Thermal roperties

Electrical Properties

Advantages of Zero Porosity

Comparison With Another Machinable Ceramic

Parameter	Machinable Aluminum Nitride (AlN)	Macor
Material Type	Ceramic (Aluminum Nitride)	Glass-Ceramic
Machinability	Excellent (due to secondary phases like BN)	Excellent (easily machined with standard tools)
Thermal Conductivity	High (170-200 W/m·K)	Moderate (1.3 W/m·K)
Electrical Insulation	High (excellent electrical insulator)	Good (good electrical insulator)
Thermal Expansion	Low	Low
Dielectric Strength	High	Moderate
Oxidation Resistance	High	High
Wear Resistance	High	Moderate
Operating Temperature	High (up to 2000°C in inert atmospheres)	Moderate (up to 800°C)
Mechanical Strength	High	Moderate
Common Applications	Power electronics, semiconductor components, heat sinks	Aerospace, electronics, electrical insulators
Processing Ease	More difficult (requires specialized equipment)	Easier (machined with standard tools)

Different engineering applications require different material properties. You can choose materials according to your actual needs, or contact our experts to provide you with appropriate suggestions.

Macor glass ceramic Application

Medical artificial eye bracket

Macor glass ceramics are widely used in the medical field. The material is non-toxic, odorless has good biocompatibility, can remain stable in the physiological environment of the human body, and its excellent performance can also support various forces during surgery to ensure the safety of surgery.

Experimental fixed support

Many experimental equipment will use support components made of macor, such as quadrupole mass spectrometers, ion trap brackets, and as shown in the picture, to provide stable support components for test equipment

Aerospace components

Macor is usually used in aerospace to make thermal insulation gaskets, vacuum sealing components, etc. Its zero porosity can ensure that there will be no material leakage and degradation in a vacuum environment. For example, NASA also uses this material in aircraft hinges, doors and windows.

Semiconductor Manufacturing

Macor can also be seen in the semiconductor industry, such as mechanical parts responsible for wafer transfer tasks, and high-purity customized components, such as vacuum chamber components, wafer inspection fixtures, etching equipment support components, etc.

A small method to test porosity

The non-porosity of a material can be quickly tested by soaking it in oil-based dyes or industrial inks. This is done by soaking the material and then observing the surface with a microscope to see if there is any sign of color residue or penetration. This is a simple and reliable test for a wide range of materials including Macor and other ceramics.

We have created a YouTube video on Macor and Alumina that shows how to do an initial verification with this method. This method is suitable for quickly evaluating the density and non-porosity of a material in a laboratory or production environment.

How to choose a supplier

Macor glass ceramics have become an ideal material for many industries, with unique performance advantages. Jundro Ceramics has accumulated many years of experience in macor processing and has maintained good cooperation with many well-known universities and laboratories. We can provide high-quality macor rods, blocks, tubes, and customized components. If your project requires it, please feel free to contact our experts.