The alloy cast iron reference material(RM) for spectral analysis, under the premise of 0.1% boron addition making absolute-white section, was developed by adopting step gating system, the reasonable joining order of alloy elements,special mould and forced cooling process. The metallographic structure of the samples were observed. The results indicate that the alloy cast iron reference materials have dense microstructure and absolute-white section. The homogeneity of each element exhibits well by the method ...
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