Transparent aluminum oxynitride and method of manufacture

Details Transparent aluminum oxynitride and method of manufacture Transparent aluminum oxynitride and method of manufacture

1985-03-20

1988-01-19

Lechert, Jr., Stephen J.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Optical fiber, waveguide, or preform

264 65, 264125, 423266, 423275, 423385, 423625, 423631, 501 98, 501152, 501153, 501904, B29D 1100

Patent

active

047203625

ABSTRACT:
An article of manufacture is provided comprising a polycrystalline cubic aluminum oxynitride having a density of at least 98% of theoretical density, and being transparent to electromagnetic radiation in the wavelength range from 0.3 to 5 micrometers with an in-line transmission of at least 20% in this range.
A method of preparing the optically transparent aluminum oxynitride is also provided comprising the steps of forming a green body of substantially homogeneous aluminum oxynitride powder and pressureless sintering said green body in a nitrogen atmosphere and in the presence of predetermined additives which enhance the sintering process. Preferred additives are boron and yttrium in elemental or compound form.

REFERENCES:
patent: 4184884 (1980-01-01), Jong
patent: 4241000 (1980-12-01), McCauley et al.
patent: 4481300 (1984-11-01), Hartnett et al.
patent: 4520116 (1985-05-01), Gentilman et al.

Affiliated with

Also associated with

Rating

Transparent aluminum oxynitride and method of manufacture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transparent aluminum oxynitride and method of manufacture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transparent aluminum oxynitride and method of manufacture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-370921