“…Though several different SiC ceramics manufacturing process are developed, for example pressureless sintering, gas pressure sintering, hot pressing, hot isostatic pressing, reaction sintering, chemical vapor deposition (CVD), carbon fiber-reinforced SiC (C/SiC), a few methods have been applied for large scale optical mirror fabrication. Typical light weighted SiC optical mirror fabrication process are thought to be pressureless sintering (PLS-SiC) [1], reaction sintering (RS-SiC), CVD-SiC [2][3] and C/SiC [4]. These processes may generally include complicated fabrication steps to obtain good optical surface, for example sintering, machining, CVD and polish.…”