DOUBLE-TUBE CONNECTION STRUCTURE FOR DETONATION SYNTHESIS, DETONATION SYNTHESIS DEVICE AND APPLICATION THEREOF

摘要

A double-tube connection structure for detonation synthesis, a detonation synthesis device and an application thereof. The double-tube connection structure for detonation synthesis comprises a drive tube (4), a sample tube (2), a fixed component, and an end plug (7) provided at a port of the sample tube (2). The drive tube (4) is sleeved outside the sample tube (2), cavities (3) are provided between the drive tube (4) and the sample tube (2), and between the drive tube (4) and the end plug (7). The fixed component is provided on both ends of the drive tube (4) and the sample tube (2). After detonation, a detonation wave is transferred from top to bottom. Under the action of the detonation wave, the drive tube (4) performs concentric sliding motion towards the sample tube (2), and covers outside a top end plug (7) of the sample tube (2), the sample tube (2), and a bottom end plug (7) of the sample tube (2). A detonation synthesis device comprises the double-tube connection structure for detonation synthesis. The device can enable a graphite sample to be effectively converted into a high-purity polycrystalline diamond at a conversion rate of more than 90%, and enable the high-purity polycrystalline diamond obtained by conversion to be completely recovered at a recovery rate of 100%, which facilitates achieving the industrial production.