1,220,548. Coated surfaces. WESTING- HOUSE ELECTRIC CORP. 22 Aug., 1969 [26 Sept., 1968], No. 42017/69. Heading B2E. [Also in Division H1] An insulating surface within an electron discharge device is coated with a high resistive material incorporating silicon carbide. The coating may be a mixture of silicon carbide and silicon dioxide which is formed by applying, e.g. by painting, a suspension of 80 mg silicon carbide in 60 ml ethyl silicate, 15 ml of 2% hydrochloric acid and 90 ml dioxane and heating at 400‹C for 1 hour in air during the normal exhausting procedure of the tube. The coating may be 0.002 inch thick.
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机译：1,220,548。涂层表面。西屋电气公司1969年8月22日[1968年9月26日]，第42017/69号。标题B2E。 [也在H1区中]电子放电装置内的绝缘表面涂有结合了碳化硅的高电阻材料。涂层可以是碳化硅和二氧化硅的混合物，该混合物是通过施加例如碳纳米管而形成的。通过涂漆，将80 mg碳化硅的悬浮液溶于60 ml硅酸乙酯，15 ml 2％的盐酸和90 ml二恶烷中，并在正常排气过程中在空气中于400℃加热1小时。涂层可以是0.002英寸厚。
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