The oxidation resistance of ultramicro copper powder was much improved and the powder were stabilized in the air by using silver-coating method and phosphating treatment respectively . Their oxidizing temperatures are beyond 220 ℃ .

分别采用表面包银和磷化处理的 方法，提高了铜粉的抗氧化性能，使50nm铜 超微粉末能稳定地存在于空气中，磷化处理后铜粉末的氧化温度高于220℃。

The ultramicro 4A-zeolite is synthesized with the fly ash by melting-hydrothermal method and compared with common A-zeolite by XRD SEM and laser granulometric analysis .

以粉煤灰为原料，采用加碱熔融-水热合成法制备 超微4A沸石，并采用XRD、SEM和激光粒度分析等 手段将合成结果与常规4A沸石进行了对比。