Browse > Article
http://dx.doi.org/10.5781/KWJS.2010.28.6.040

A Study on Laser Assisted Machining for Silicon Nitride Ceramics (IV) - Mechanism and Application of LAM for Silicon Nitride Ceramics -  

Kim, Jong-Do (Division of Marine System Engineering, College of Maritime Sciences, Korea Maritime University)
Lee, Su-Jin (Graduate School, Korea Maritime University)
Park, Seo-Jeong (Welding Research Center, RIST)
Lee, Jae-Hoon (Korea Institute of Machinery & Materials, Laser Application Team)
Publication Information
Journal of Welding and Joining / v.28, no.6, 2010 , pp. 40-44 More about this Journal
Abstract
Laser assisted machining (LAM) has been researched in order to machine the silicon nitride ceramics economically and effectively. LAM is an effective machining method by local heating of the cutting part to the softening temperature of the silicon nitride using laser beam. When silicon nitride ceramics is heated using a laser beam, the surface of silicon nitride ceramic is softened, oxidized and decomposed. And then surface hardness is decreased. Through machining in low viscosity and hardness conditions, silicon nitride was machined effectively and the life span of tool was increased. The plastic deformation was occurred due to softening of amorphous YSiAlON above $ 1,000^{\circ}C$. Transgranular fracture of ${\beta}-Si_3N_4$ was occurred when YSiAlON was not softened, but mostly intergranular fracture was occurred by the plastic deformation of softened YSiAlON.
Keywords
Silicon nitride; HPDL; LAM; Oxidation; Softening; Cutting mechanism; Application;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 신소재연구회 : 21세기를 뒤받침할 신소재.신재료, 겸지사, 2002 (in Korean)
2 백영남, 신영의, 정남용, 정승부, 정재필, 이성희 : 공학도를 위한 신소재공학, 삼성북스, 2008 (in Korean)
3 Somiya, Shigeyuki, Mitomo, Mamoru, Yoshimura, Masahiro : Silicon nitride-1, ElseVier Applied Science, 1990
4 W. D. Kingery, H. K. Bowen, D. R. Uhlmann : Introduction to Ceramics, JOHN WILEY & SONS, 1975, 448-515
5 Michael J. Hoffmann, Gunter Petzow : Tailoring of mechanical properties of Si3N4 Ceramics, Kluwer Academic Publishers, 1994
6 Jong-Do Kim, Su-Jin Lee, Seo-Jeong Park : The Basic Study on machinability of ceramics in $CO_{2}$ laser assisted machining, Journal of the Korean Society of Marine Engineering, 33-2 (2009), 322- 329 (in Korean)   DOI   ScienceOn
7 Jong-Do Kim, Su-Jin Lee, Hee-Jong Yoon, Seo-Jeong Park : The Characteristics of Laser Assisted Machining for $Si_{3}N_{4}$ by Laser Power and Cutting Feed Rate, The 5th International Congress on Laser Advanced Materials Processing LAMP 2009, HPL-3, Removal, #TuOH 4-4(#258), 2009, 154
8 Jong-Do Kim, Su-Jin Lee, Jae-Hoon Lee, Yuji Sano : A Study on the Microstructural, Thermal and Mechanical Properties of Silicon Nitride Ceramic, Journal of the Korean Society of Marine Engineering, 33-7 (2009) 1026-1033   과학기술학회마을   DOI   ScienceOn