ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Quartz has excellent optical properties and thus it is often used as the material of mirrorand lens. However, it is almost impossible to be machined by cutting due to its brittle and highhardness. Grinding is a common method for machining quartz. One of the authors designed a newtype of a paraboloidal mirror of quartz for the neutron optical devices. The fabrication process ofthis mirror was investigated in this experiment. A jig with two grooves of 90 degrees was made andtwo workpieces were stuck on the jig using the wax melt at about 60 degrees centigrade. The twoworkpieces were first ground applying ELID (electrolytic in-process dressing) grinding methodwith #325 and #1200 cast iron bonding diamond abrasive wheels. Then the ground surface waspolished with CeO2 slurry. The finished surface roughness was Ra2.0nm and rms2.4nm and its formerror about 2μm. After coating process, its properties of focusing neutron beam were measured. Theresults were that the reflecting rate was 42%, gain 1.9 and 2.3mm×10.1mm beam focused to1.6mm×2.1mm
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.339.11.pdf
Permalink