Abstract: Aiming at the problem that ferroelectric functional materials has many scarcities in the aspects of low hardness, extreme brittleness, easy breakage ,low processing efficiency,difficult to meet the requirements of high efficiency and ultra precision machining, the typical ferroelectric materials i.e. lithium triborate, zinc sulfide, zinc selenide and cadmium zinc tellurium were selected to make a deeply analysis on the machining principle and methods of themselves via the available research result from domestic and abroad. The results indicated that the profile accuracy, surface quality and machining efficiency of ferroelectric materials have been sudden improved with the application of lappingpolishing method for free and fixed abrasive, single point diamond turning (SPDT) and ultraprecision fly cutting, their application prospect have been obviously promoted.
Key words: ferroelectric materials; piezoelectric；pyroelectric; soft and brittle crystal; machining current status and perspective