Method for testing stability of lithium-boron alloy for thermal battery

The invention discloses a lithium-boron alloy stability testing method for a thermal battery, which belongs to the technical field of thermal batteries, and is characterized by comprising the following steps: S1, cutting and punching a LiB alloy belt into a wafer with the diameter equal to that of a single body, wherein the diameter range of the wafer is phi 18 to phi 120 mm; s2, placing a LiB alloy sheet between two metal fixing plates, after a certain pressure is applied, locking a fixing device, wherein the diameter of the two metal fixing plates is equal to that of the LiB alloy sheet, and the pressing pressure is 1.5-2.5 t/cm ; s3, in a dry environment with the relative humidity not larger than 2%, placing the fixing device with the LiB alloy sheet clamped therein in a crucible resistance furnace, raising the temperature to 480-500 DEG C at the temperature raising rate of 10-20 DEG C/min and with the heat preservation time of 1-2 h; and S4, taking out the fixing device from the crucible furnace, observin