Metallic parts fabrication using selective inhibition of sintering (SIS)
    3.
    发明授权
    Metallic parts fabrication using selective inhibition of sintering (SIS) 有权
    使用选择性抑制烧结(SIS)的金属零件制造

    公开(公告)号:US07241415B2

    公开(公告)日:2007-07-10

    申请号:US10610622

    申请日:2003-06-30

    摘要: A selective inhibition of sintering (SIS) technique may be used to fabricate a three-dimensional (3-D) dense metal object from a binderless metal powder. Layers of metal powder are provided on a build tank. For each layer, regions of the layer are sinter-inhibited, e.g., by depositing a sinter-inhibiting material such as a ceramic slurry, a metal salt, or oxidizing metal particles in the powder using chemicals or a concentrated heat source. Each layer may be compacted before the next layer is provided. A final compact may then be sintered. Unwanted sintered sections may be removed from the compact at boundaries formed by the sinter-inhibited (unsintered) regions, and the object extracted.

    摘要翻译: 可以使用选择性抑制烧结(SIS)技术从无粘合剂金属粉末制造三维(3-D)致密金属物体。 金属粉末层设置在建造罐上。 对于每个层,例如通过使用化学品或浓缩热源在粉末中沉积诸如陶瓷浆料,金属盐或氧化性金属颗粒的烧结抑制材料来对该层的区域进行烧结抑制。 在提供下一层之前,每个层可以被压实。 然后可以烧结最终的压块。 可以在由烧结体抑制(未烧结)区域形成的边界处,从压块中去除不需要的烧结部分,并提取物体。

    Superabrasive particle synthesis with controlled placement of crystalline seeds
    4.
    发明申请
    Superabrasive particle synthesis with controlled placement of crystalline seeds 失效
    超级磨料颗粒合成,控制放置晶种

    公开(公告)号:US20060016127A1

    公开(公告)日:2006-01-26

    申请号:US11175017

    申请日:2005-07-05

    申请人: Chien-Min Sung

    发明人: Chien-Min Sung

    IPC分类号: B24D18/00

    摘要: An improved method for synthesizing superabrasive particles provides high quality industrial superabrasive particles with high yield and a narrow size distribution. The synthesis method can include forming a growth precursor of a substantially homogeneous mixture of raw material and catalyst material or layers of raw material and metal catalyst. The growth precursor can have a layer of adhesive over at least a portion thereof. A plurality of crystalline seeds can be placed in a predetermined pattern on the layer of adhesive. The growth precursor can be maintained at a temperature and pressure at which the superabrasive crystal is thermodynamically stable for a time sufficient for a desired degree of growth. Advantageously, the patterned placement of crystalline seeds and disclosed processes allow for production of various morphologies of synthetic diamonds, including octahedral and cubic diamonds, and improved growth conditions generally. As a result, the grown superabrasive particles typically have a high yield of high quality particles and a narrow distribution of particle sizes.

    摘要翻译: 合成超级磨料颗粒的改进方法提供高产率和窄尺寸分布的高质量工业超研磨颗粒。 合成方法可以包括形成原料和催化剂材料或原料和金属催化剂层的基本上均匀的混合物的生长前体。 生长前体可在其至少一部分上具有一层粘合剂。 多个结晶种子可以以预定图案放置在粘合剂层上。 生长前体可以保持在超磨料晶体在热力学稳定的温度和压力下达足以达到所需生长程度的时间。 有利地,结晶晶种的图案化布置和所公开的方法允许生产合成金刚石的各种形态,包括八面体和立方晶体,以及通常改善的生长条件。 结果,生长的超级磨料颗粒通常具有高产率的高质量颗粒和窄的粒度分布。

    Process for sintering silicon nitride articles
    10.
    发明授权
    Process for sintering silicon nitride articles 失效
    烧结氮化硅制品的工艺

    公开(公告)号:US4462818A

    公开(公告)日:1984-07-31

    申请号:US502390

    申请日:1983-06-08

    摘要: In the manufacture of sintered silicon nitride articles by hot isostatic pressing, silicon nitride preforms are assembled in a stack with spacers between the preforms. A plurality of such stacks are inserted in a glass tube closed at one end. The glass is melted around each stack to encapsulate each stack in a single sealed capsule.

    摘要翻译: 在通过热等静压制造烧结氮化硅制品时,将氮化硅预成型件与预制件之间的间隔物堆叠成堆叠。 多个这样的堆叠被插入在一端封闭的玻璃管中。 玻璃在每个堆叠周围熔化,以将每个堆叠封装在单个密封的胶囊中。