A crucible for a thermogravimetric analysis (TGA) system can include a side wall defining a crucible opening, and a base enclosed by side wall and opposite the crucible opening. The base and side wall form an interior volume configured to hold a material for thermogravimetric analysis. The base can include a base shape configured to prevent a center of mass of the material within the crucible from shifting during thermogravimetric analysis.

A crucible for a thermogravimetric analysis (TGA) system can include a side wall defining a crucible opening, and a base enclosed by side wall and opposite the crucible opening. The base and side wall form an interior volume configured to hold a material for thermogravimetric analysis. The base can include a base shape configured to prevent a center of mass of the material within the crucible from shifting during thermogravimetric analysis.

Disclosed in the present invention is vacuum coating apparatus for uniformly distributing metal steam using a uniform mixing buffer structure, comprising a crucible, wherein an induction heater for heating molten metal in the crucible to form metal steam is arranged outside of the crucible. A top of the crucible is connected to a flow distribution tank body by means of a metal steam pipeline. A horizontal core rod and a pressure stabilizing plate are arranged inside the flow distribution tank body. The core rod is located below the pressure stabilizing plate. A coating nozzle is arranged at the top of the flow distribution tank body. An induction coil is arranged on the outer side of the flow distribution tank body. A pressure regulating valve is arranged on the metal steam pipeline. A plurality of axial heating holes are provided inside the core rod, resistance wires are arranged inside the heating holes, and a primary guide plate, a secondary guide plate and a tertiary guide plate are arranged on the surface of the core rod; and a buffer groove is provided on the inner wall of the flow distribution tank body, and the buffer groove corresponds to the core rod in position. According to the present invention, when high-temperature steam makes contact with a low-temperature steel plate, a uniform coating is formed on the surface of the steel plate.

Disclosed in the present invention is vacuum coating apparatus for uniformly distributing metal steam using a uniform mixing buffer structure, comprising a crucible, wherein an induction heater for heating molten metal in the crucible to form metal steam is arranged outside of the crucible. A top of the crucible is connected to a flow distribution tank body by means of a metal steam pipeline. A horizontal core rod and a pressure stabilizing plate are arranged inside the flow distribution tank body. The core rod is located below the pressure stabilizing plate. A coating nozzle is arranged at the top of the flow distribution tank body. An induction coil is arranged on the outer side of the flow distribution tank body. A pressure regulating valve is arranged on the metal steam pipeline. A plurality of axial heating holes are provided inside the core rod, resistance wires are arranged inside the heating holes, and a primary guide plate, a secondary guide plate and a tertiary guide plate are arranged on the surface of the core rod; and a buffer groove is provided on the inner wall of the flow distribution tank body, and the buffer groove corresponds to the core rod in position. According to the present invention, when high-temperature steam makes contact with a low-temperature steel plate, a uniform coating is formed on the surface of the steel plate.