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利用甩带法制备出Al86Fe10Zr4非晶薄带,用X射线衍射仪和差示扫描量热计对该非晶的非晶特性及晶化过程进行了研究。结果表明,Al86Fe10Zr4非晶薄带的晶化过程为两步晶化,其晶化温度分别约为603和718K。用Kissinger法得到了合金两步晶化过程的激活能分别为273和239kJ/mol。对该非晶薄带及其不同晶化程度的试样在0.01mol·L-1NaCl,pH=12碱性溶液中的室温电化学腐蚀性能的研究结果表明,部分晶化态试样表现出比非晶态试样更佳的耐蚀性能,而完全晶化态试样的耐蚀性能明显降低。
The amorphous Al86Fe10Zr4 ribbon was prepared by the strip-off method. The amorphous properties and the crystallization process were studied by X-ray diffraction and differential scanning calorimetry. The results show that the crystallization of Al86Fe10Zr4 amorphous ribbon is two-step crystallization with the crystallization temperatures of about 603 and 718K, respectively. The Kissinger method was used to obtain the activation energies of the two-step crystallization of the alloy at 273 and 239 kJ / mol, respectively. The results of the room temperature electrochemical corrosion test of the amorphous ribbons and their different degree of crystallization in 0.01 mol·L-1NaCl, pH = 12 alkaline solution show that the partially-crystallized samples show a ratio Non-crystalline samples better corrosion resistance, and fully crystallized samples significantly reduce the corrosion resistance.