Exfoliation Reaction and Recombination of the Layered Hydroxide Zinc Benzoate with a Basal Spacing of 1.44 nm;

Reason analysis and countermeasures of the trouble of the integrated wheel exfoliation for DF_(4D) and DF_(11) locomotives;

The property and organieal modification of montmorillonite are also reviewed,and it is indicated that the key issue in preparing epoxy/montmorillonite nanocomposites at present is to achieve exfoliation or delamination of the aggregates in.

Spalling and Preventive Measures of Cast Hot-Strip Roll;

It has been analyzed the causes for both heavy surface spalling and "side spalling" of back-up roll for hot strip mill.

The paper analyses the spalling of 5Cr forging cold work rolls in the CSP Plant of Baotou Steel Corp.

The analysis shows that the beforehand physical defects and carbonization may be the reason for barrier's desquamation.

By means of chemical analysis,rigidity test,metallographic examination and fracture analysis,it was found that the main reason for the backup roll's desquamation was possible crack headspring which was offered by impurity in interior tissue.

Some common types of work roll desquamation in rolling of medium and heavy plate are introduced.

Under low impact cycles,the forms of damage are mainly plastic deformation and plastic accumulation;but for high impact cycles,surface crush and delamination occurs because of the plastic exhaustion of the central zone of impact wear scar,and the thick.