Home / Standards / GB/T 45009-2024 GB/T 45009-2024 Active Rare earth environmental barrier coating material—Ytterbium silicate powder 稀土环境障涂层材料 硅酸镱粉末 Standard Type GBT ICS 77.120.99 CCS H65 Status 现行 Issue Date 2024-11-28 Implementation 2025-06-01 Responsible Dept 国家标准委 Drafting Unit N/A