摘要：【中文】本发明公开一种基于脉冲涡流技术的表面和埋深缺陷分类方法，步骤是：加工和待测试件具有相同材料和厚度的无缺陷试件和含有要求的最大埋深深度缺陷的缺陷试件，分别采集参考信号R0和参考缺陷信号R1，得到检测灵敏度在一个周期内的变化曲线，并将最大值对应的时刻作为最优信号提取时刻；对待测试件进行扫查，分别提取每一个周期响应信号中的峰值时刻t2值A0,A1,A2…An和最优信号提取时刻t1值B0,B1,B2…Bn，其中n为检测点的个数；分别归一化，绘制峰值时刻曲线和最优信号提取时刻曲线；当缺陷的峰值时刻曲线最小值小于最优信号提取时刻曲线最小值时，表明检测到的缺陷为表面缺陷，否则为埋深缺陷。此种分类方法可实现表面缺陷和埋深缺陷的快速实时自动识别。 【EN】The invention discloses a surface and buried depth defect classification method based on a pulse eddy current technology, which comprises the following steps: processing a defect-free test piece and a defect test piece containing the required maximum burial depth defect, wherein the defect-free test piece and the defect test piece to be tested have the same material and thickness, respectively acquiring a reference signal R0 and a reference defect signal R1 to obtain a change curve of the detection sensitivity in a period, and taking the moment corresponding to the maximum value as the optimal signal extraction moment; scanning a piece to be tested, and respectively extracting peak value time t2 values A0, A1 and A2 … An and optimal signal extraction time t1 values B0, B1 and B2 … Bn in each periodic response signal, wherein n is the number of detection points; respectively normalizing, and drawing a peak value time curve and an optimal signal extraction time curve; and when the minimum value of the peak value moment curve of the defect is smaller than the minimum value of the optimal signal extraction moment curve, indicating that the detected defect is a surface defect, otherwise, indicating that the detected defect is a buried depth defect. The classification method can realize the quick real-time automatic identification of the surface defects and the buried depth defects.

摘要：【中文】本发明公开基于电泳沉积SiC纳米线的碳碳复合材料与金属的钎焊连接方法，在连接前，在C/C复合材料表面沉积一层SiCNWs，其与钎料中的活性元素反应生成尺度极小的新相并析出，TiCu以之为形核质点以非均匀形核方式析出，从而使得原本连续的脆性TiCu化合物细化，改善接头的薄弱相，以提高接头强度。另外，相比较于化学气相沉积，电泳沉积具有周期短、成本低的优点，且不会损伤C纤维。 【EN】The invention discloses a method for braze welding of a carbon-carbon composite material and metal based on electrophoretic deposition of SiC nanowires. In addition, compared with chemical vapor deposition, electrophoretic deposition has the advantages of short period and low cost, and does not damage C fibers.

摘要：【中文】本发明公开了一种硅烷热解法制备乙硅烷和丙硅烷的系统及其方法，特点是包括依次连接的原料加热器、硅烷热解反应器、换热与压缩系统、氢气分离器、硅烷粗分离器、硅烷分离塔、乙硅烷粗分离器和乙硅烷分离塔，氢气分离器的气相出口、硅烷粗分离器的气相出口和硅烷分离塔的气相出口分别与换热与压缩系统的壳程进口连接，换热与压缩系统的壳程出口与原料加热器进口连接，乙硅烷粗分离器的顶部气相出口和乙硅烷分离塔的顶部气相出口分别与外部乙硅烷储罐连接，乙硅烷分离塔的底部液相出口与外部丙硅烷储罐连接，优点是转化效率好且产品纯度高。 【EN】The invention discloses a system and a method for preparing disilane and trisilane by a silane pyrolysis method, which are characterized by comprising a raw material heater, a silane pyrolysis reactor, a heat exchange and compression system, a hydrogen separator, a crude silane separator, a silane separation tower, a crude disilane separator and a disilane separation tower which are sequentially connected, wherein a gas phase outlet of the hydrogen separator, a gas phase outlet of the crude silane separator and a gas phase outlet of the silane separation tower are respectively connected with a shell pass inlet of the heat exchange and compression system, a shell pass outlet of the heat exchange and compression system is connected with an inlet of the raw material heater, a top gas phase outlet of the crude disilane separator and a top gas phase outlet of the crude disilane separation tower are respectively connected with an external disilane storage tank, and a bottom liquid phase outlet of the disilane separation tower is connected with the external trisilane storage tank.