摘要
微波等离子体处理木材表面时引起蚀刻，蚀刻程度的大小与离子能量水平，即与等离子体工作条件和等离子体种类密切相关。本文讨论了微波等离子体工作条件即微波功率、系统压力、样品位置（距谐振腔距离）及处理时间对杉木木材蚀刻的影响，并在相同工作条件下，比较了Ｎ２、Ｏ２及空气等离子体对木材蚀刻程度的影响。结果表明：在影响蚀刻作用的诸因素中，样品位置的影响最显著，处理时间、微波功率其次，而系统压力的影响最弱。在本研究的范围内，杉木样品距谐振腔距离越近、等离子体处理时间越长、微波功率越高则蚀刻越严重；在３种等离子体中，Ｏ２等离子体蚀刻最严重，而Ｎ２等离子体最轻微，空气等离子体蚀刻介于两者之间。
Microwave plasma represents rather reactive media, so ablation will take place from wood surface in contact with microwave plasma. The ablation depends upon the energy of the reactive species, which in turn depend upon the nature of gas used and the treatment conditions. The ablation verity of wood (Chinese fir) sample in different treatment conditions, including location of sample in the reactor, time of treatment, electrical power used, gas pressure and different gas, including N 2, O 2 and air, has been investigated. The result shows that the location of sample to resonance cavity is the strongest affecting and factor followed by treating time, microwave energy level and gas pressure. Shorting distance of sample to resonance cavity, prolonging treatment time and increasing microwave energy level will result in ablation increasing. Oxygen is most effective on the action of ablation, followed by nitrogen and air.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1999年第2期95-99,共5页
Scientia Silvae Sinicae
关键词
微波等离子体
木材
表面蚀刻
杉木
Microwave plasma, Ablation, Chinese fir, Affecting factors
