陕西理工学院学报(自然科学版)
陝西理工學院學報(自然科學版)
협서리공학원학보(자연과학판)
JOURNAL OF SHAANXI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE EDITION)
2015年
3期
1-7
,共7页
刘继拓%贺志荣%吴佩泽%解亚丹%戚云昊
劉繼拓%賀誌榮%吳珮澤%解亞丹%慼雲昊
류계탁%하지영%오패택%해아단%척운호
关%键%词 Zn-Al-Mg合金%Zn-Al-Mg-Si合金%镀层组织%耐腐蚀性能
關%鍵%詞 Zn-Al-Mg閤金%Zn-Al-Mg-Si閤金%鍍層組織%耐腐蝕性能
관%건%사 Zn-Al-Mg합금%Zn-Al-Mg-Si합금%도층조직%내부식성능
Zn-Al-Mg alloy%Zn-Al-Mg-Si alloy%coating microstructure%corrosion resistance
对比研究热浸镀Zn-0.5Al-1.5Mg、Zn-2Al -1.5Mg和Zn-2Al -1.5Mg-03.Si合金镀层组织与耐腐蚀性。用X射线衍射仪、扫描电子显微镜及能谱仪分析了合金镀层的组成相和显微组织,用全浸腐蚀试验和中性盐雾试验表征了合金镀层的耐腐蚀性能。结果表明:Zn-Al-Mg和Zn-Al-Mg-Si合金镀层主要由Zn相、Al相和MgZn2相组成;合金镀层主要含有Zn+MgZn2二元共晶组织和Zn+Al+MgZn2三元共晶组织;Al和Si有细化镀层晶粒作用,添加 Si能提高Zn-Al-Mg-Si合金镀层的耐腐蚀性能。
對比研究熱浸鍍Zn-0.5Al-1.5Mg、Zn-2Al -1.5Mg和Zn-2Al -1.5Mg-03.Si閤金鍍層組織與耐腐蝕性。用X射線衍射儀、掃描電子顯微鏡及能譜儀分析瞭閤金鍍層的組成相和顯微組織,用全浸腐蝕試驗和中性鹽霧試驗錶徵瞭閤金鍍層的耐腐蝕性能。結果錶明:Zn-Al-Mg和Zn-Al-Mg-Si閤金鍍層主要由Zn相、Al相和MgZn2相組成;閤金鍍層主要含有Zn+MgZn2二元共晶組織和Zn+Al+MgZn2三元共晶組織;Al和Si有細化鍍層晶粒作用,添加 Si能提高Zn-Al-Mg-Si閤金鍍層的耐腐蝕性能。
대비연구열침도Zn-0.5Al-1.5Mg、Zn-2Al -1.5Mg화Zn-2Al -1.5Mg-03.Si합금도층조직여내부식성。용X사선연사의、소묘전자현미경급능보의분석료합금도층적조성상화현미조직,용전침부식시험화중성염무시험표정료합금도층적내부식성능。결과표명:Zn-Al-Mg화Zn-Al-Mg-Si합금도층주요유Zn상、Al상화MgZn2상조성;합금도층주요함유Zn+MgZn2이원공정조직화Zn+Al+MgZn2삼원공정조직;Al화Si유세화도층정립작용,첨가 Si능제고Zn-Al-Mg-Si합금도층적내부식성능。
The microstructure and the corrosion resistance of hot dip Zn-0.5Al-1.5Mg,Zn-2Al-1.5Mg and Zn-2Al-1.5Mg-0.3Si alloy coatings were comparatively investigated.The composition phases and the mi-crostructures of coatings were analyzed by X-ray diffractometer,scanning electron microscope and energy dis-persive spectrometer.The corrosion resistance of coatings was characterized by full immersion corrosion and neutral salt spray test.The results indicate that the Zn-Al-Mg and Zn-Al-Mg-Si alloy coatings are mainly com-posed of Zn phase,Al phase and MgZn2 phase, the Zn+MgZn2 eutectic and Zn+Al+MgZn2 eutectic were found in alloy coatings, the element of Al and Si can refine the grain size, adding Si in the Zn-Al-Mg alloy bath can enhance alloy coatings’ resistance to corrosion.