Contact melting of alkali halides with high-melting compounds

Spiers Memorial Lecture: Mechanochemistry, tribochemistry, mechanical alloying – retrospect, achievements and challenges

“…To characterize the state of a sample (or a sample site) after being hit locally, different models have been proposed, such as hot spots, bruise model, magma–plasma model, contact melting, forced reactions, mechanically-stimulated diffusion, formation of fluidized states (meso-phases) at the interfaces, formation of mechanocomposites at the interfaces, local temperature and pressure short-term peaks, shear deformation, contact electrification, mechanoemission, mechanoluminescence, formation of defects, radicals, excited states. 8,50,95,114,115,184,297,337–342,350–357 Without knowing the state of a sample during and after a mechanical pulse it is difficult to decide if the process is caused directly by mechanical action, or by secondary phenomena. Therefore, it is not possible to decide if the IUPAC definition of a mechanochemical reaction is applicable.…”