국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Effect of Laser-Cracking Method of ZrO2/Ni Thermal Barrier Coating for Regeneratively Cooled Thrust Chamber Evaluated by Combustion Gase of NTO/MMH Propellant.
저자	Yukio KURODA, Shin-ichi MORIYA, Makoto TADANO, Masahiro SATO, Akio MORO, Yoshio AOKI, Takayuki SUDO, Masahiro YUUKI, Nobuyuki SHIMODA, Qing Jie ZHANG
Keyword	Crack; Ceramics; Cracking; Finite Element Method; Rocket Engine
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr0001339.pdf?id=NALTR0001339
보고서번호	NAL TR-1339
발행년도	1997.12
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	An evaluation test of laser cracking specimens applied to ZrO2 /Ni functionally graded materials (FGM) and non-FGM is described. In this test, 30-mm disk specimens of these materials were exposed to the combustion gase of nitrogen tetroxide (NTO) and monomethyl hydrazine (MMH) propellant. Delamination and vertical crack formation of the ZrO2 thermal barrier coating were observed during the heating test. It was found that the laser cracking method seemed to be effective at preventing delamination in the coating layer of the test specimens. The crack and the delamination formation mechanisms fo