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An investigation on the adhesive behaviour between transition metals titanium, niobium, tantalum, and tungsten
Author(s) -
Li Kebin,
Sun Jiansan,
Liu Ling,
Qi Zhenzhong
Publication year - 1991
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221640207
Subject(s) - tantalum , tungsten , niobium , materials science , adhesive , titanium , transition metal , boron , impurity , electron , refractory metals , carbon fibers , nitrogen , sulfur , metallurgy , composite material , chemistry , organic chemistry , layer (electronics) , composite number , catalysis , physics , quantum mechanics , biochemistry
The contact adhesive energies between two transition metals (Nb, Ta, Ti, W) are measured in ultra‐high vacuum (UHV) condition. The results show that they depend on the cohesive energies of contacted materials. It is suggested that the adhesive interaction is caused by sharing of electrons between two metals and is mainly dependent on the densities of states of their d‐electrons. The value of the adhesive energies for two transition metals are in the range of 0.1 to 3.0 (eV/coupled atoms). When the samples are heated, the adhesive strength decreases drastically because of the segregations of nonmetallic impurities such as carbon, nitrogen, boron, and sulfur etc.