Northeastern University

Shanghai Neusoft Medical Technology Co., Ltd.

Lin Zhang

Ming Li

Fei Li

Han Xu

Zhichao Jiang

Engang Wang

Bailing An

Lin Xu

Anyuan Deng

Zhuang Li

Provided are a high-strength and high-conductivity Cu&#x2014;Ag&#x2014;Sc alloy and a preparation method thereof. The preparation method includes the following steps: (1) placing metal Ag and metal Sc in an electric-arc furnace and performing smelting under a vacuum condition, performing cooling to normal temperature in the furnace to obtain an Ag&#x2014;Sc intermediate alloy; (2) placing the Ag&#x2014;Sc intermediate alloy, an electrolytic copper and the metal Ag in an induction furnace and performing heating to 1200-1300&#xb0; C. under a vacuum condition, keeping at the temperature for 10-60 min for smelting, then performing casting and cooling to normal temperature in the furnace to obtain ingots; (3) heating the ingots to 700-850&#xb0; C. under an inert atmosphere, then performing water quenching to normal temperature to obtain heat-treated ingots; and (4) heating the heat-treated ingots to 400-500&#xb0; C. under an inert atmosphere, then performing air cooling to normal temperature to obtain the high-strength and high-conductivity Cu&#x2014;Ag&#x2014;Sc.

High-strength and high-conductivity Cu&#x2014;Ag&#x2014;Sc alloy and preparation method thereof

Methods and devices for detecting consistency between an invisible radiation field and a visible light field are provided. In an example, the method includes: an invisible radiation field is obtained by controlling a size of an opening of a beam limiting device; a first projection image is captured by an Electron Portal Imaging Device (EPID) as a distribution map of the invisible radiation field; a visible light field is obtained by turning on a light field lamp without changing the size of the opening of the beam limiting device; a phantom is positioned at each of vertices of the visible light field; a second projection image is captured by the EPID as a vertex distribution map of the visible light field; and deviation information between the invisible radiation field and the visible light field is determined according to the distribution map of the invisible radiation field and the vertex distribution map of the visible light field.

Detecting consistency between radiation field and light field

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Shenyang, China

Lin Zhang