Aqueous binder formulation for metal and ceramic feedstock for injection molding and aqueous coating composition
    1.
    发明授权
    Aqueous binder formulation for metal and ceramic feedstock for injection molding and aqueous coating composition 失效
    金属和陶瓷原料用于注塑和水性涂料组合物的水性粘合剂配方

    公开(公告)号:US07517400B2

    公开(公告)日:2009-04-14

    申请号:US11254293

    申请日:2005-10-20

    Applicant: Mohammad Behi

    Inventor: Mohammad Behi

    CPC classification number: C09D189/00

    Abstract: Low cost water based binder system was developed for shaping ferrous, nonferrous metals and/or ceramics parts by injection molding processes. The process comprises the steps of preparing a mixture containing a gel-forming powder comprising carrageenan, metal and/or ceramic powders, de-ionized water and a gel-strengthening additive. The mixture is injection molded to produce self-supporting articles. The present invention provides a direct compounding and molding of metal and/or ceramic feedstock. Additionally, a coating composition comprising gelatine, water and a metal and/or ceramic powder is used to form coating layers on selected materials.

    Abstract translation: 开发了低成本的水基粘合剂系统,用于通过注射成型工艺成型有色金属,有色金属和/或陶瓷部件。 该方法包括制备含有包含角叉菜胶,金属和/或陶瓷粉末,去离子水和凝胶强化添加剂的凝胶形成粉末的混合物的步骤。 将混合物注射成型以产生自支撑制品。 本发明提供金属和/或陶瓷原料的直接配混和模塑。 此外,使用包含明胶,水和金属和/或陶瓷粉末的涂料组合物在所选择的材料上形成涂层。

    Metal/ceramic composite molding material
    2.
    发明授权
    Metal/ceramic composite molding material 失效
    金属/陶瓷复合成型材料

    公开(公告)号:US06291560B1

    公开(公告)日:2001-09-18

    申请号:US09259794

    申请日:1999-03-01

    Abstract: A composite molding compound comprising a combination of metal and ceramic powders is disclosed. The powders are combined with a binder, a liquid carrier and other processing additives in a manner to provide uniform distribution of two phases in a material format that facilitates the molding of complex parts at relatively low pressures and temperatures using conventional injection molding machines. The products formed from these molding compounds may be designed with tailored physical and mechanical properties such as thermal conductivity, thermal expansion coefficient, density, elastic modulus and wear properties.

    Abstract translation: 公开了包含金属和陶瓷粉末的组合的复合模塑料。 粉末与粘合剂,液体载体和其它加工添加剂结合,以便以使用常规注射成型机在相对低的压力和温度下成型复合部件的材料形式均匀分布两相。 由这些模塑料形成的产品可以设计成具有定制的物理和机械性能,例如导热性,热膨胀系数,密度,弹性模量和磨损性能。

    Stable aqueous iron based feedstock formulation for injection molding
    3.
    发明授权
    Stable aqueous iron based feedstock formulation for injection molding 失效
    用于注塑的稳定的含铁水基原料配方

    公开(公告)号:US06261336B1

    公开(公告)日:2001-07-17

    申请号:US09630271

    申请日:2000-08-01

    CPC classification number: B22F1/0077 B22F1/0059 B22F3/225 B22F2998/00

    Abstract: A composition for forming molded metal containing articles having improved stability. More particularly, a corrosion resistant composition for forming injection molded articles having a sodium silicate corrosion inhibiting additive. The corrosion inhibitor prevents metal oxidation when a metal containing powder is mixed with a water based binder, providing stability to the article and preventing generation of hydrogen gas. This significantly enhances the shelf life of the moldable composition prior to molding.

    Abstract translation: 一种用于形成具有改善的稳定性的含有制品的含有制品的组合物。 更具体地,涉及一种用于形成具有硅酸钠腐蚀抑制添加剂的注塑制品的耐腐蚀组合物。 当含金属粉末与水基粘合剂混合时,防腐蚀剂防止金属氧化,为制品提供稳定性并防止产生氢气。 这在模塑之前显着提高了可成型组合物的保质期。

    Monolithic silicon nitride having high fracture toughness
    4.
    发明授权
    Monolithic silicon nitride having high fracture toughness 失效
    具有高断裂韧性的单片氮化硅

    公开(公告)号:US5449649A

    公开(公告)日:1995-09-12

    申请号:US168439

    申请日:1993-12-17

    CPC classification number: C04B35/5935

    Abstract: A monolithic silicon nitride ceramic is densified at temperatures lower than 2000.degree. C. and heat treated at temperatures greater than 2000.degree. C. in the presence of at least 6.5 w % of multi-component sintering aids. This monolithic silicon nitride has a highly acicular microstructure characterized by .beta.-Si.sub.3 N.sub.4 grains having an average grain width ranging from about 1 to 1.5 .mu.m and average apparent aspect ratio greater than 1.8, Chevron Notch fracture toughness greater than 9 MPa.multidot.m.sup.1/2, R-curve behavior, high Weibull modulus, excellent damage tolerance, high thermal conductivity, and other desirable properties.

    Abstract translation: 整体式氮化硅陶瓷在低于2000℃的温度下致密化,并且在至少6.5w%的多组分烧结助剂的存在下,在高于2000℃的温度下进行热处理。 该单片氮化硅具有高度针状的微结构,其特征在于具有平均晶粒宽度为约1至1.5μm,平均表观纵横比大于1.8的β-Si 3 N 4晶粒,雪佛龙凹陷断裂韧性大于9MPaxm1 / 2,R- 曲线行为,高威布尔模量,优异的耐损伤性,高导热性和其他所需的性能。

    Low pressure injection molding of metal and ceramic powders using soft tooling
    7.
    发明授权
    Low pressure injection molding of metal and ceramic powders using soft tooling 失效
    使用软工具对金属和陶瓷粉末进行低压注塑

    公开(公告)号:US06203734B1

    公开(公告)日:2001-03-20

    申请号:US09197623

    申请日:1998-11-23

    CPC classification number: B28B7/346 B29C33/3842

    Abstract: A method for rapidly manufacturing soft tooling from organic polymer-based resins and reinforcement filler materials for use in an injection molding machine to make complex metal and ceramic parts from powders. The cost to produce the tooling is relatively low and the manufacturing time is relatively short compared to conventional processes for making metal tooling. The finished parts are near-net shape, requiring little or no machining, and have excellent sintered properties.

    Abstract translation: 一种用于从注射成型机中使用的有机聚合物基树脂和增强填料的快速制造软工具的方法,以从粉末制造复杂的金属和陶瓷部件。 与用于制造金属模具的常规工艺相比,生产模具的成本相对较低,并且制造时间相对较短。 成品是近净形状,需要很少或不需要加工,并且具有优异的烧结性能。

    Gel strength enhancing additives for agaroid-based injection molding
compositions
    8.
    发明授权
    Gel strength enhancing additives for agaroid-based injection molding compositions 失效
    凝胶强度增强添加剂,用于基于乳胶的注射成型组合物

    公开(公告)号:US5746957A

    公开(公告)日:1998-05-05

    申请号:US796012

    申请日:1997-02-05

    Abstract: Parts from ceramic and/or metal powder(s) are shaped by a process that comprises the steps of (1) forming a mixture comprising ceramic and/or metal powder(s), a gel-forming material chosen from the class of polysaccharides known as "agaroids", a gel-forming solvent, and a gel strength enhancing agent, and said mixture being formed in a blender that provides a shearing action and being heated to raise the temperature of the mixture to about 70.degree. C. to 100.degree. C.; and (2) molding the mixture at a temperature sufficient to produce a self-supporting structure comprising the powder and gel. The parts exhibit excellent green strength and are rapidly fired without cracking, distortion or shrinkage problems.

    Abstract translation: 来自陶瓷和/或金属粉末的部件通过包括以下步骤的方法成形:(1)形成包含陶瓷和/或金属粉末的混合物,选自已知的多糖类型的凝胶形成材料 作为“混合物”,凝胶形成溶剂和凝胶强度增强剂,并且所述混合物在混合器中形成,其提供剪切作用并被加热以将混合物的温度升高至约70℃至100℃ C。; 和(2)在足以产生包含粉末和凝胶的自支撑结构的温度下模制该混合物。 这些部件表现出优异的生坯强度,并且在没有开裂,变形或收缩问题的情况下快速燃烧。

    Aqueous binder formulation for metal and ceramic feedstock for injection molding and aqueous coating composition

    公开(公告)号:US20060054856A1

    公开(公告)日:2006-03-16

    申请号:US11254293

    申请日:2005-10-20

    Applicant: Mohammad Behi

    Inventor: Mohammad Behi

    CPC classification number: C09D189/00

    Abstract: Low cost water based binder system was developed for shaping ferrous, nonferrous metals and/or ceramics parts by injection molding processes. The process comprises the steps of preparing a mixture containing a gel-forming powder comprising carrageenan, metal and/or ceramic powders, de-ionized water and a gel-strengthening additive. The mixture is injection molded to produce self-supporting articles. The present invention provides a direct compounding and molding of metal and/or ceramic feedstock. Additionally, a coating composition comprising gelatine, water and a metal and/or ceramic powder is used to form coating layers on selected materials.

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