FIELD: electronic engineering. SUBSTANCE: high-voltage vacuum electrodes are made of powder material so that they have regular pores formed by hollows between material fragments, their size being about 300 mcm. EFFECT: improved electric strength of vacuum insulation without using standard environmentally adverse technologies: chemical and electric polishing; reduced effect of ionizing processes occurring in micropores affecting characteristics of vacuum insulation at low intensities of external field due to proposed microstructure of high-voltage electrode surface. 4 dwg
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