Phase Relationship in the Ni-Mo-B-O System and Oxidation Property of a Ni-NiMo 2 B 2 Two-Phase Alloy
Phase Relationship in the Ni-Mo-B-O System and Oxidation Property of a Ni-NiMo 2 B 2 Two-Phase Alloy
复制标题
Ni-Mo-B-O系相关系及Ni-NiMo 2 B 2 两相合金的氧化性能
DOI：
10.2320/jinstmet1952.65.4_279
复制
发表时间：
2001
影响因子：
--
通讯作者：
K. Kôyama
中科院分区：
文献类型：
--
作者：
Guofeng Zhang;M. Morishita;K. Kôyama
研究了有望成为新型耐热材料的 Ni-NiMo2B2 合金的氧化性能。确定了 Ni-Mo-B-O 体系在 973 K 时的相关系，从热力学角度阐明了合金的氧化路径。相关系表明，Ni3B2O6、NiMoO4、MoO3、MoO2、NiO 和 B2O3 是在合金的氧化路径上在大气中形成的。在773、973和1173 K下对合金进行了氧化试验。从相关系可知，合金表面形成的氧化物薄膜由Ni3B2O6、NiMoO4、MoO3、MoO2、NiO和B2O3组成。氧化物薄膜非常致密，对合金具有保护作用，因此合金的抗氧化性能非常优异。
The oxidation property of a Ni–NiMo2B2 alloy which is expected to be a new heat resistant–material was investigated. The phase relationship of the Ni–Mo–B–O system at 973 K was determined to clarify the oxidation path of the alloy from the point of view of thermodynamics. The phase relationship suggested that Ni3B2O6, NiMoO4, MoO3, MoO2, NiO and B2O3 are formed in the atmosphere on the oxidation path of the alloy. Oxidation tests of the alloy were carried out at 773, 973 and 1173 K. The oxide ˆlm formed on the surface of the alloy was composed of Ni3B2O6, NiMoO4, MoO3, MoO2, NiO and B2O3 as expected from the phase relationship. The oxide ˆlm was very dense and appeared to be protective for the alloy, and as a result, the oxidation resistance of the alloy was very excellent.