Preparation of Micro-Hole with Large Aspect Ratio
| Autor: | Jun Hua You, Mei Ling Jin, Rong De Li, Ying Dong Qu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0209 industrial biotechnology
Microscope Materials science Aspect ratio Scanning electron microscope Mechanical Engineering 02 engineering and technology Surface finish 021001 nanoscience & nanotechnology Condensed Matter Physics law.invention Core (optical fiber) 020901 industrial engineering & automation Mechanics of Materials law Casting (metalworking) General Materials Science Graphite Composite material 0210 nano-technology Shape factor |
| Zdroj: | Materials Science Forum. 898:1190-1194 |
| ISSN: | 1662-9752 |
| Popis: | It was difficult to prepare micro-hole with large aspect ratio by traditional processing technologies. In order to solve the problem, a preparation was proposed. It was carried out by casting method. Carbon fiber and metal wire coated graphite paint were used as hole core respectively. And morphology and geometrical characteristic of micro-hole were observed and analyzed by scanning electron microscope and laser scanning confocal microscope. The results showed that average diameter and aspect ratio of micro-hole obtained by the group of carbon fiber hole core were about 0.2 mm and above 1700, respectively. For the other group, about 0.5 mm and 700, respectively. The micro-hole obtained by the metal wire coated graphite paint hole core was more close to circle. Its shape factor was about 0.72. The roughness of micro-hole value obtained by carbon fiber hole core was close to 3.2 μm, smaller than that of the metal wire coated graphite paint. |
| Databáze: | OpenAIRE |
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