崔玉友
,
李东
,
万晓景
金属学报
Ti-Al-V,Ti-Al-Mo和Ti-Al-Nb合金系的实验结果表明,ω相的形成是遵守电子浓度规律的。过渡族元素Ti,V,Mo,Nb的价电子数分别为4(s~2d~2),5(s~2d~3),6(s~1d~5),5(s~1d~4)非过渡族元素Al的价电子数为3(s~2p~1)。此外,合金元素的化学负电性和原子半径对ω相的形成也有影响。综合合金元素的价电子数、化学负电性和原子半径三个因素,钛合金中ω相形成的特征值可定为4.223,其表达式为 4.223=∑Nf_i+0.310Δx/x_(Ti)+0.551Δr/r_(Ti)
关键词:
ω相
,
Ti-alloy
,
electron concentration
,
electronegativity
,
atomic radius
WANG Wenmei Baotou Research Institute of Rare Earth
,
Ministry of Metallurgy Industry
,
Baotou
,
ChinaYU Yongfu CHEN Quanyuan Changsha Institute of Mining and Metallurgy
,
Ministry of Metallurgy Industry
,
Changsha
,
China engineer
,
Baotou Research Institute of Rare Earth
,
Ministry of Metallurgical Industry
,
Baotou 014010
,
China
金属学报(英文版)
Based on theoretical calculation of electronegativity of groups of flotation reagent and method of infrared adsorption spectroscopy,the collection and adsorption of α-nitroso-β- naphthol in hematite flotation have been studied.The chemical adsorption seems to be predominant owing to formation of pentacyclic nitrosyl chelate compound by atoms of nitrosyl bond in α-nitroso-β-naphthol together with Fe(Ⅲ)on hematite surface.Mean- while,the nonuniform multilayer physical adsorption is also occurred.
关键词:
α-nitroso-β-naphthol
,
null
,
null
,
null
,
null
