Effect of roughness and wettability of silicon wafer in cavitation erosion |
| |
Authors: | NaNa Jiang ShiHan Liu DaRong Chen |
| |
Affiliation: | (1) State Key Laboratory of Tribology, Tsinghua University, Beijing, 100084, China |
| |
Abstract: | Material damage of silicon wafer with different roughness and wettability was investigated by using the self-made vibration cavitation apparatus in de-ionized water. Various roughness and wettability of sili- con wafer were achieved by changing their morphology and depositing Au, diamond-like carbon films (DLC films) on them. Surface morphology was observed with a scanning electron microscope (SEM) and a surface profilometer, and wettability was characterized by the contact angle measurement. The cavitation erosion results showed that many tiny pits and cracks appeared on the wafer surface as a result of brittle fractures; the number and size of the pits and cracks increased with experiment time, which made material flake away finally; cavitation occurred more easily on the silicon wafer surface with the augment of roughness or contact angle by changing surface morphology or depositing Au, DLC thin film on it, which consequently aggravated cavitation damage. |
| |
Keywords: | cavitation erosion silicon wafer roughness contact angle |
本文献已被 维普 SpringerLink 等数据库收录! |
| 点击此处可从《科学通报(英文版)》浏览原始摘要信息 |
|
点击此处可从《科学通报(英文版)》下载全文 |