Results show that the bonding strength of the HA/Ti (Ti, 44.6ω%) composite coatings is up to 23.2 MPa when Ti substrate is treated in H2O2/ NH3·H2O solution and sintered at 700℃.

The detecting results show that,the interface of bimetal compound casting is completely metallurgical combine,there are two continuous distribution layers(FeAl3 and Fe2Al5) in the interface. The bonding strength is about 76.4MPa.

The Cr content of the CrCu tail is another important factor affecting the bonding strength between CuW/CrCu interface. It is necessary to have a suitable Cr content.

This Paper desecribes the adhesive made from 100% peanut shell with alkaline(PSA), being mixed with 30%～50% PF-resin for the first grade of plywood, and the bonding strength of the plywood meets the national standard of China(GB 9846. 4-88), and makes an approach to the PSA formulations,amounts of PF-resin and the hot bonding techniques of plywood.

The results demonstrated that the ideal mixing ratio of powder TPF and water was 10∶9 by weight and the bonding strength was improved after laying the blended liquid adhesive for 24 h.

The influence factors were analyzed. The result showed that the properties were best when mol ratio of formaldehyde, urea, phenol was 10:8:1.The bonding strength reached specified value of GB/T 17656-1999.

Results show that the bonding strength of the HA/Ti (Ti, 44.6ω%) composite coatings is up to 23.2 MPa when Ti substrate is treated in H2O2/ NH3·H2O solution and sintered at 700℃.

The results showed that the bonding strength and micro-hardness of Ni60 coating reached 44.6MPa and 963.8HV respectively, which were obviously higher than Ni wrapped C and Ni wrapped MoS2 coatings.

The strength of the coating increased with the WC-17Co content. The bonding strength approaches to 184MPa when the content of WC-17Co reaches 69wt% in the coating.

From the so-called Gschneidner correlation one would have expected the contrary behavior, that is, that the bonding strength would become slightly lower when going from LaM2 to LuM2.

Thus for the alkali halides, one examines the bonding strength for the combination of gaseous ions with the same charges and electronic configurations as in the ionic solid.

Results showed that the bonding strength between coating and Ti-6Al-4V substrate increased with increase of titanium content in the composite coatings.

Introducing ZrO2 bond coat is found to significantly promote the bonding strength of HA coating.

The purpose of the investigation was to study the effects of those processing variables on the bonding strength and failure behavior of the system.

A new scheme is proposed to correlate the bond energies of molecular complexes. It is formulated in the form of the following equation:-⊿H=96.487 αβ/(I-E)where⊿H is the heat of formation of the complex with the donor and the acceptor molecules at infinite separation as the reference state; α, E and β, I are two pairs of parameters characterizing respectively the acceptor and the donor in the bonding strength of the complex formation. Of the four parameters, only I has the definite meaning and is set equal...

A new scheme is proposed to correlate the bond energies of molecular complexes. It is formulated in the form of the following equation:-⊿H=96.487 αβ/(I-E)where⊿H is the heat of formation of the complex with the donor and the acceptor molecules at infinite separation as the reference state; α, E and β, I are two pairs of parameters characterizing respectively the acceptor and the donor in the bonding strength of the complex formation. Of the four parameters, only I has the definite meaning and is set equal to the ionization potential of the donor. The numerical factor 96.487 appears because it is found convenient to express ⊿H in kJ and the quantities on the right side of the equation in eV. The calculated values are in good agreement with the experimental results for over 350 complexes which involve a variety of bonding types such as σ~*-n, σ~*-π, π-π, π-n as well as many typical hydrogen bondings (cf. Tables 2,3 and 4 in the Chinese Text). On the basis of the new scheme discussion on ionization potential, strain energy and coordination center are tentatively given.

Based on the interaction of asperities and upper-bound approach a mathematical model for simulation of friction phenomenon between dies and workpiece was proposed. Optimizing the mathematical model with respect to several variables, it was found that in addition to adhering, tearing, ploughing, etc., asperities of workpiece can wave-like move along the surface layer and under certain circumstances they may disappear If asperities wavily move along the surface layer friction coefficient depends on the geometry...

Based on the interaction of asperities and upper-bound approach a mathematical model for simulation of friction phenomenon between dies and workpiece was proposed. Optimizing the mathematical model with respect to several variables, it was found that in addition to adhering, tearing, ploughing, etc., asperities of workpiece can wave-like move along the surface layer and under certain circumstances they may disappear If asperities wavily move along the surface layer friction coefficient depends on the geometry of asperities. However, the bonding strength of asperities has no significant influence on friction coefficient The depth of the plastic deformation layer is related to the geometry of asperities, too. The soundness of the prerequisite of the proposed model and some analytical results were verified by experiments.

A linear relation between the reduced overlap population PMM' and the re- duced energy matrix elements in the EHMO method has been proyed. By cal- culating the PMM' of some typical transition metal clusters, it is found that the PMM', which is used as an index of the bonding strength between the me- tals, can better describe the relations of the bonding effect with the bond length bridge radical electronegativity, d election number of metal atom and igands.