Method and means for converting graphite into diamonds

摘要: A host liquid, such as a liquid metal, which is "seeded" with small bubbles of an inert gas, maintained in sealed chamber at ambient temperature about 100° K. above the melting point and static pressure ranging from 1 to 100 bars. substance (for example carbon) capable being allotropically transformed first form thereof graphite) second diamond), placed then subjected time-varying acoustical applied, for example, by plurality solid horns, cause least certain gas expand suddenly collapse cavitation zone located substantially centrally chamber. By maintaining sufficient Hugonoit curve intersect predetermined area phase diagram substance, shock waves produced collapsing can be caused envelop particles graphite instantaneously transform them into diamond particles. The selected group consisting aluminum, tin, gallium, thallium indium, alloys thereof; may carbon, boron nitride zinc sulphide.