Study of Mechano-Chemical Machining of Ceramics and the Effect on Thin Film Behavior.
Final technical rept. 1 May 80-30 Nov 82,
HONEYWELL CORPORATE TECHNOLOGY CENTER BLOOMINGTON MN
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Efforts have been made in this program to develop mechanochemical polishing technique for a number of materials and to determine the consequences of mechanochemically polished surfaces on the physical performance of ceramics. The objective of the mechanochemical polishing efforts is to produce scratch-and-damage-free surfaces by finding suitable soft abrasives that remove material from the workpiece through chemical reactions. Mechanochemical polishing effects were observed when hotpressed and reaction bonded SI3N4 were polished with two oxides of iron, Fe2O3 and Fe3O4. Mechanochemicallly polished surfaces of Si3N4 were analyzed using the techniques of Auger electro spectroscopy, profilometry and interferometry. Data showing the effects of mechanochemical polishing on the strength of hot-pressed Si3N4 and on the adhesion of thin titanium films on this material have been obtained. Also preliminary efforts have been made to find suitable soft abrasives for mechanochemical polishing of GaAs, Spinel MgO.A12O3 Sic, B4C,and partially stabilized Zro2.
- Ceramics, Refractories and Glass
- Laminates and Composite Materials
- Fabrication Metallurgy