Effect of Rare Earth on the Corrosion-Resisting Performance of Zinc-Based Alloy Coatings

The corrosion behavior of coatings of pure zinc and Zn-Al,Zn-Al-RE alloys in NaCl solu-tions was studied by salt-spray experiments,even corrosion experiments and electrochemical measurementsof bi-directional polarization curves and a.c.impedance in weak polarization region consistent regularitieswere obtained by these different methods,viz.,the corrosion resistance of Zn could be enhanced by alloying itwith Al,and particularly with Al-RE.The causes of enhancement of corrosion resistance by RE were alsodiscussed.     

贮氢合金的进展

文章描述了贮氢合金的基本性质,金属氢化物的结构,以及贮氢合金吸释氢的热力学和动力学问题,指出了贮氢合金作为功能材料的应用价值和前景.     

新型锌铝稀土合金热镀钢管研制成功

热镀工艺是最常见的金属防腐方法。在我国钢材生产、特别是优质钢管供不应求的情况下,防止钢管腐蚀具有重要的意义。中国科学院长春应化所与长春市钢管厂通力合作、共同攻关,在国内首次将锌铝稀土合金应用在钢管镀层的先进技术试验获得成功,并正式投入生产。     

稀土在热镀钢管合金中应用的研究

用X射线分析和金相方法研究了高强钢管的 Zn-Al-RE 合金镀层结构与热浸镀条件之间的关系。