soda-wash solution
... sodar 声波大气探测 soda-wash solution 碱洗溶液 sodion 钠离子 ...
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结果表明：先用磷酸酸洗，再用氢氧化钠、磷酸三钠、碳酸钠溶液碱洗的预处理方案得到的转化膜耐腐蚀性能最优。
The results show that corrosion resistance of the stannate conversion coating pretreated as following process: acid pickled by phosphate first, then alkaline pickled by s...
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