CAJ | 학술논문

用不同配方的Mn、Cr、Ti混合物涂覆α-Al2O3绝缘陶瓷表面，在适当条件下进行热退火处理，观测了各样品的二次电子发射系数，表面电阻率，XRD。发现涂层与陶瓷基体间相互扩散，结合紧密，有平整的表面组织结构，形成不同新相与原α-Al2O3混合的表面；样品表面电阻率降低，二次电子发射系数降幅达60％～65%。涂覆处理有利于提高真空绝缘子抗表面闪烁，耐高压击穿的能力。
용불동배방적Mn、Cr、Ti혼합물도복α-Al2O3절연도자표면，재괄당조건하진행열퇴화처리，관측료각양품적이차전자발사계수，표면전조솔，XRD。발현도층여도자기체간상호확산，결합긴밀，유평정적표면조직결구，형성불동신상여원α-Al2O3혼합적표면；양품표면전조솔강저，이차전자발사계수강폭체60％～65%。도복처리유리우제고진공절연자항표면섬삭，내고압격천적능력。
The mixed coats of Mn, Ti and Cr were applied to α-Al2O3insulated ceramics surface,followed by heat treatment under special conditions. The secondary electron emission coefficient, surface resistively, XRD and surface morphology of the samples were observed. It is found that the new phases form because the coats penetrate into and mix with the original α-Al2O3 during the heat treatment, which results in the denser and smoother surface. The surface resisitivity of all the samples decrease, and the decreases in their secondary electron emission coefficient reach 60％～65%. This is helpful for increasing the resistance to surface flashover and the high-voltage breakdown strength of solid insulators in high-vacuum.