CONTAINER FOR STORAGE OF SPECIMENS AND PROCESS OF ITS MANUFACTURE Russian patent published in 1997 - IPC

FIELD: vacuum technology, production of specimens of materials and study of their properties in vacuum, specifically, analysis and study of properties of single- and multicomponent materials under thermal or chemical action in vacuum. SUBSTANCE: proposed container can be used for permanent storage of specimens in vacuum as standards. It has vessel made of thermally stable material connected to means for creation of vacuum, specimen holder installed in vessel and sensitive element to measure parameters of going process and contacting holder. Vessel is manufactured in the form of quartz ampule with welded hole for sensitive element mounted in shell. Connection of vessel to means for creation of vacuum is made in the form of shoot on ampule which is welded after formation of vacuum. Melting pot is used as specimen holder and thermocouple is used in the capacity of sensitive element. Melting pot for materials interacting with carbon is made from pure iron. Melting pot is made from graphite for materials not interacting with carbon, it can be made from platinum for materials of semiconductor type. In agreement with process of manufacture of container outer vessel is fabricated with one open end as minimum. Inner vessel is inserted through open end of outer vessel, open end is welded and neck-shaped hole is formed in other end of outer vessel. Quartz tube with open ends is used as outer vessel, melting pot with specimen is used in the capacity of inner vessel. Lower end of tube is welded with formation of bottom. After setting of inner vessel upper end of tube is welded and hole to accommodate thermocouple is made. Quartz shell with thermocouple is installed into this hole. Neck- shaped shoot is formed on upper end of tube and is joined to vacuum pump. After evacuation of air from space neck-shaped hole is welded and space is filled with inert gas. EFFECT: improved reliability of container for long-time storage of specimens. 8 cl, 1 dwg