Preparation of a silicon carbide ceramic fiber by CO2 laser heat treatment

Jichun Tan; Zhe Chen; Yong Su; Chunxiang Feng; Dong Cao; Dianchun Liu

doi:10.1117/12.253121

30 September 1996 Preparation of a silicon carbide ceramic fiber by CO₂ laser heat treatment

Jichun Tan, Zhe Chen, Yong Su, Chunxiang Feng, Dong Cao, Dianchun Liu

Proceedings Volume 2888, Laser Processing of Materials and Industrial Applications; (1996) https://doi.org/10.1117/12.253121
Event: Photonics China '96, 1996, Beijing, China

Abstract

It is known that at 1200-1400 degrees C the polycarlosilane (PC) can be converted into silicon carbide (SiC) by electric furnace heating. However, the production cycle is longer than ten hours owing to the limit to the raising rate of furnace temperature. A method of laser heat-treatment for preparation of SiC fiber is presented in this paper. As soon as PC precursor is made by a fiber spinning machine, it is converted into SiC fiber of diameter about 12 micrometers under nitrogen flow. X-ray crystallogram show cubic system of (beta) -SiC was formed. The production cycle is shorter than 5 seconds, when the CO₂ laser power density is about 30 W/mm². The defect, such as bubble and hole inside the fiber, was monitored, which are formed by too large heating rate. The chemical and physical mechanism to avoid defect, together with the design of multi-beam optical setup for heating the moving fiber, is discussed.

Citation Download Citation

Jichun Tan, Zhe Chen, Yong Su, Chunxiang Feng, Dong Cao, and Dianchun Liu "Preparation of a silicon carbide ceramic fiber by CO₂ laser heat treatment", Proc. SPIE 2888, Laser Processing of Materials and Industrial Applications, (30 September 1996); https://doi.org/10.1117/12.253121

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available