ZHAO Zhi-zhong1, ZHANG Zhi-hui3, OU Ning4. Formation Cause and Eliminating Method of the Yellow Specks in Ceramics of Vacuum Interrupters[J]. High voltageapparatus, 2004, (6): 431-432.
ZHAO Zhi-zhong1, ZHANG Zhi-hui3, OU Ning4. Formation Cause and Eliminating Method of the Yellow Specks in Ceramics of Vacuum Interrupters[J]. High voltageapparatus, 2004, (6): 431-432.DOI:
Formation Cause and Eliminating Method of the Yellow Specks in Ceramics of Vacuum Interrupters
including electric and chemical tests and calcinations in hydrogen or in vacuum
the reason of formation of the yellow specks in ceramics is found out. It is due to the change of construction of crystal lattice in Al2O3 crystal. When heated up to 650 ℃
the yellow speck can fade away. The yellow speck has nothing with the electrical behavior of the vacuum interrupter.