公开(公告)号：US08781065B2

公开(公告)日：2014-07-15

申请号：US13429765

申请日：2012-03-26

申请人： Jonathan M. Taylor ,  Michael L. Blackmore

发明人： Jonathan M. Taylor ,  Michael L. Blackmore

IPC分类号： G01N23/083 ,  G01N23/04 ,  G01N15/08

CPC分类号： G01N15/088 ,  G01N23/046 ,  G01N2015/0833 ,  G01N2015/0846 ,  G01N2223/419

摘要： A method of determining the proportions of different powders in a powder comprises obtaining a sample of a powder, adding and mixing the sample into a molten material and freezing the mixture of powder and molten material to form a block. Computed tomography is performed on the block to produce a three-dimensional image of the block, the three-dimensional image of the block comprises a first shade, a second and a third shade corresponding to the material, a first powder particle and a sec and powder particle. The three-dimensional image of the block is analyzed to count the number of regions exhibiting the second shade and the third shade corresponding to the number of first powder particles and second powder particles respectively. The fraction of second particles in the powder is determined by dividing the number of second powder particles by the sum of the number of first powder particles and the number of second powder particles.

摘要翻译： 确定粉末中不同粉末的比例的方法包括获得粉末样品，将样品加入并混合到熔融材料中并冷冻粉末和熔融材料的混合物以形成块体。 在块上执行计算机断层摄影以产生块的三维图像，块的三维图像包括对应于材料的第一阴影，第二和第三阴影，第一粉末颗粒和秒， 粉末颗粒。 对块的三维图像进行分析，以分别显示与第一粉末颗粒和第二粉末颗粒的数量相对应的第二色调的区域的数量和第三色调。 粉末中第二颗粒的​​分数通过将第二粉末颗粒的数量除以第一粉末颗粒的数量和第二粉末颗粒的数量的总和来确定。