ASTM STP39107S PDF

Single crystals of CaF2 having ⟨111⟩. ⟨100⟩. ⟨112⟩. and ⟨113⟩ orientations have been routinely isostatically foreed in a helium atmosphere at 750°C. The crvstals were deformed 60 percent to ensure a uniform grain size of le...