公开(公告)号：US3873344A

公开(公告)日：1975-03-25

申请号：US36233273

申请日：1973-05-21

Applicant: KAMAN SCIENCES CORP

Inventor： CHURCH PETER K ,  KNUTSON OLIVER J

IPC: C04B33/32 ,  C04B35/111 ,  C04B35/64 ,  C04B41/50 ,  C04B41/85 ,  C04B41/87 ,  C04B41/89 ,  F02B75/02 ,  C04B41/24

CPC classification number: C04B41/89 ,  C04B33/32 ,  C04B35/111 ,  C04B35/64 ,  C04B41/5033 ,  C04B41/85 ,  C04B41/87 ,  F02B2075/027

Abstract: A new ceramic treatment process and product and, more particularly, a process for treating underfired porous partially vitrified relatively soft machinable refractory ceramic materials to produce hardened dimensionally stable end products at relatively low temperatures and the ceramic materials produced thereby which are suitable for application as bearings for undersea submergence, low temperature bearings for arctic vehicular and machinery applications, precision bearings for space use and liquid metal lubricated systems. The soft ceramics can be machined and shaped in the soft state and hardened by the process of this invention at temperatures well below normal vitrification temperatures with virtually no change in dimensions from the machined untreated ceramic to the treated and hardened end product. The present method comprises impregnating a ceramic oxide body with a solution of a chromium compound and heating the impregnated body to a temperature of at least 1,300*F which heating may precede or be preceded by impregnation and cure cycles of at least 600*F but less than the vitrification temperature of the ceramic oxide to harden the body.

Abstract translation: 更具体地，涉及一种新的陶瓷处理工艺和产品，更具体地说，涉及一种用于处理低熔点多孔部分玻璃化的相对软的可机械加工的难熔陶瓷材料以在相对低的温度下生产硬化的尺寸稳定的最终产品的方法，以及由此生产的陶瓷材料适用于轴承 用于海底淹没，北极车辆和机械应用的低温轴承，空间用精密轴承和液态金属润滑系统。 柔软的陶瓷可以通过本发明的方法在柔软状态下加工和成形，并且在远低于正常玻璃化温度的温度下硬化，实际上没有从被加工的未处理的陶瓷到被处理和硬化的最终产品的尺寸变化。 本方法包括用铬化合物溶液浸渍陶瓷氧化物体并将浸渍体加热到至少1300°F的温度，该温度可以在至少600°F但较少的浸渍和固化循环之前或之前进行 比陶瓷氧化物的玻璃化温度要硬化身体。

公开(公告)号：US3925575A

公开(公告)日：1975-12-09

申请号：US33274573

申请日：1973-02-15

Applicant: KAMAN SCIENCES CORP

Inventor： CHURCH PETER K ,  KNUTSON OLIVER J

IPC: C04B41/50 ,  C04B41/85 ,  C04B41/87 ,  F02B75/02 ,  B44D1/14

CPC classification number: C04B41/85 ,  C04B41/5033 ,  C04B41/87 ,  F02B2075/027

Abstract: A new ceramic treatment process and product and, more particularly, a process for forming and treating and shaping and treating of porous skeletal bodies to produce hardened dimensionally stable end products at relatively low temperatures and the resulting materials produced thereby which comprises the steps of treating a porous skeletal body by impregnating the interstices of the porous body with a compound of a metal capable of being converted to an oxide in situ at relatively low temperatures, heating the body so impregnated at temperatures well below normal vitrification to a temperature of at least 600* F. and for a period of time sufficient to convert the compound impregnated therein to an oxide and repeating the impregnation and heating steps until the desired degree of hardness is obtained. The invention further contemplates the forming of the porous body from relatively finely divided materials which may be relatively pure powders, mixtures of powders or impure powders, including additives in the form of discrete particles, fibers, fillers and the like, which powders are molded and bound together or bound together and molded with a binder which may comprise the impregnating compound or other suitable binder prior to treatment.

Abstract translation: 更具体地说，一种新的陶瓷处理方法和产品，更具体地说，涉及一种用于在较低温度下形成和处理和成形和处理多孔骨架以产生硬化尺寸稳定的终产物的方法，由此生产的所得材料包括以下步骤： 通过用相对较低温度原位转化为氧化物的金属化合物浸渍多孔体的空隙来加热多孔骨架体，使其在远低于正常玻璃化的温度下浸渍至至少600℃的温度 并且足以将其中浸渍的化合物转化为氧化物并重复浸渍和加热步骤的时间直到获得所需的硬度。 本发明进一步考虑从相对细碎的材料形成多孔体，该材料可以是相对纯的粉末，粉末或不纯的粉末的混合物，包括离散颗粒，纤维，填料等形式的添加剂，这些粉末被模塑， 结合在一起或结合在一起并且在处理之前用可包含浸渍化合物或其它合适粘合剂的粘合剂模制。

公开(公告)号：US3484678A

公开(公告)日：1969-12-16

申请号：US3484678D

申请日：1966-01-27

Applicant: KAMAN SCIENCES CORP

Inventor： CHURCH PETER K

IPC: G01D5/22 ,  G01L9/00 ,  H02P13/10

CPC classification number: G01L9/007 ,  G01D5/2275