中国原子能科学研究院同位素研究所经过大量的材料筛选及生产工艺的完善,成功地研制出金钯Ⅰ,Ⅱ型两种新火警源。经SO_2气体腐蚀、盐雾腐蚀等一系列环境实验,结果表明,在长期较恶劣环境下,新型源的耐腐蚀性能,远好于原黄金覆盖层源。按GB4075附录D规定的密封放射源 China Institute of Atomic Energy, Institute of Isotopes After a large number of materials screening and production process improvement, the successful development of gold palladium Ⅰ, Ⅱ two new fire sources. After a series of environmental experiments such as SO 2 gas corrosion and salt spray corrosion, the results show that the corrosion resistance of the new type source is far better than that of the original gold layer in long term and harsh environment. According to GB4075 Appendix D provides a sealed radioactive source