航天制造技术
航天製造技術
항천제조기술
HANGTIAN ZHIXAO JI SHU
2013年
3期
1-4
,共4页
搪瓷涂层%陶瓷颗粒%抗热震性能%韧性
搪瓷塗層%陶瓷顆粒%抗熱震性能%韌性
당자도층%도자과립%항열진성능%인성
enamel coating%ceramic powder%thermal-shocking resistance%ductility
在搪瓷涂层的基础上，磨加一定比例的Cr2O3陶瓷颗粒制备了颗粒增强搪瓷复合涂层，并研究了其抗热震性能。结果表明，经10次1000℃到室温的冷热循环试验后，传统搪瓷涂层出现严重崩瓷现象，而颗粒增强搪瓷复合涂层无明显变化，表明陶瓷颗粒的添加可一定程度上改善搪瓷涂层的抗热震性能。
在搪瓷塗層的基礎上，磨加一定比例的Cr2O3陶瓷顆粒製備瞭顆粒增彊搪瓷複閤塗層，併研究瞭其抗熱震性能。結果錶明，經10次1000℃到室溫的冷熱循環試驗後，傳統搪瓷塗層齣現嚴重崩瓷現象，而顆粒增彊搪瓷複閤塗層無明顯變化，錶明陶瓷顆粒的添加可一定程度上改善搪瓷塗層的抗熱震性能。
재당자도층적기출상，마가일정비례적Cr2O3도자과립제비료과립증강당자복합도층，병연구료기항열진성능。결과표명，경10차1000℃도실온적랭열순배시험후，전통당자도층출현엄중붕자현상，이과립증강당자복합도층무명현변화，표명도자과립적첨가가일정정도상개선당자도층적항열진성능。
Enamel coating plays an important role in protecting the turbine hot gas duct of the liquid rocket engine. However, poor ductility and low thermal-shocking resistance of the enamel coating restrict the property of the liquid rocket engine. In this paper, an enamel-ceramic composite coating was prepared by adding Cr2O3 ceramic powder into enamel slurry. The thermal-shocking resistance of the composite coating was also investigated. Results show that gaffing occurs on the surface of the enamel coating after 10 cycles at 1000℃ in air, however, the surface of the composite coating was smooth without undulating and gaffing. It is suggested that Cr2O3 ceramic powder could enhance the thermal-shocking resistance of the coating.
