Self-pulverisation oxides added with lanthanum oxide
Self-pulverisation oxides added with lanthanum oxide
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DOI：
10.1016/j.matlet.2018.11.111
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发表时间：
2019-02
影响因子：
3
通讯作者：
W. Araki;A. Yoshinaga;Y. Arai
中科院分区：
文献类型：
--
作者：
W. Araki;A. Yoshinaga;Y. Arai
在这项研究中，研究了钴酸镧(LCO)的“自粉碎”机理，试图在开发材料时使用一个新的概念。结果证实，少量过量的La_2O_3在LCO中羟基化为La(OH)_3，导致最初具有高机械强度的块状LCO在几周内自粉碎成非常细的粉末，裂纹由此萌生和扩展。其他常规氧化物，如稳定的氧化锆。制备了有意添加La_2O_3的复合氧化物，并对其自粉碎现象进行了研究。
In this study, a lanthanum cobaltite (LCO) “self-pulverisation” mechanism was investigated in an attempt use a novel concept when developing materials. The results confirmed that hydroxylation of a small amount of excessive La2O3in LCO into La(OH)3caused self-pulverisation of bulk LCO, which initially had a high mechanical strength, into very fine powders within a few weeks, from which cracks initiated and propagated. Other conventional oxides, such as stabilised zirconia. Intentionally added with the La2O3, were prepared and their self-pulverisation phenomena were demonstrated.