Macor Machinable Glass Ceramic Cleaning, Bake-out, Annealing

Standard
Products

> Fabrication
– Machining
– Cleaning
– Bake Out
– Annealing
– Thick Film
– Metallizing
– Thin Film
– Metallizing
– Frit Sealing
– Brazing
– Adhesive Bonding

Cleaning

1.	Ultrasonic cleaning is very effective. If ultrasonics are not available, cleaning with a soft bristle brush is acceptable. Use a heated detergent to remove excess dirt and grease. Heavy duty cleaners with high pH can be used provided the Macor is not exposed for extended periods (greater than one hour).
2.	Following the detergent wash, the Macor is rinsed in clean water.
3.	Final rinse can be isopropyl alcohol 70% minimum or acetone to promote drying. If necessary an organic degreaser can be used prior to final cleaning.
4.	When washing and rinsing avoid sudden temperature changes when going from bath to bath.

Bake Out

1.	Heat Macor to 100°C (212°F) over the projected use temperature (do not exceed 1000°C).
2.	Reduce pressure to below the projected use vacuum level.
3.	Hold at temperature and vacuum for one hour.

Annealing

1.	Usually not required. Anneal if thin slices warp or heating and cooling rates above 300°C/hour are expected.
2.	Heat at 200°C/hour (360°F/hour) maximum to 750°C (1380°F).
3.	Hold for two hours.
4.	Cool at 25°C/hour (45°F/hour).