公开(公告)号：WO02068702A3

公开(公告)日：2003-04-03

申请号：PCT/US0200733

申请日：2002-01-09

Applicant: GEN ELECTRIC

Inventor： PENDER DAVID CHARLES ,  IACOVANGELO CHARLES DOMINIC ,  D EVELYN MARK PHILIP ,  TYSOE STEVEN ALFRED

IPC: B23B27/14 ,  B22F1/02 ,  B23B27/20 ,  C04B37/00 ,  C04B41/45 ,  C04B41/51 ,  C04B41/52 ,  C04B41/81 ,  C04B41/88 ,  C04B41/89 ,  C22C1/05 ,  C22C26/00

CPC classification number: C04B41/009 ,  B22F2998/00 ,  C04B41/4584 ,  C04B41/5133 ,  C04B41/5144 ,  C04B41/52 ,  C04B41/81 ,  C04B41/88 ,  C04B41/89 ,  C22C26/00 ,  Y10T407/27 ,  Y10T428/25 ,  Y10T428/252 ,  Y10T428/30 ,  Y10T428/31678 ,  C04B41/4523 ,  C04B41/4529 ,  C04B41/4535 ,  C04B41/5012 ,  C04B41/5116 ,  C04B35/52 ,  B22F7/02

Abstract: A metal-infiltrated polycrystalline diamond composite tool (60) comprising a plurality of diamond grains (22) forming a continuous polycrystalline diamond matrix (56), a metallic phase (62) being substantially palladium-free and contiguous to the continuous polycrystalline diamond matrix (56), wherein the metallic phase (62) interpenetrates the continuous polycrystalline diamond matrix (56) and substantially wets an outer surface of the continuous polycrystalline diamond matrix (56); and a working surface (68). The metallic phase (62) is formed from an infiltrant (44) and a wetting-enhancement layer (24) disposed on the outer surfaces of the diamond particles (22), with both the infiltrant (44) and wetting-enhancement layer (24) being substantially palladium-free and comprising at least one metal from the group consisting of cobalt, iron, and nickel. The invention also includes a preform (40) for a metal-infiltrated polycrystalline diamond composite tool (60), the preform (40) comprising a container (52), a metallic infiltrant source (54), and a plurality of coated diamonds (20), each coated with a wetting-enhancement layer (24) and, optionally, an activation layer (34), both of which are substantially palladium-free. Methods of forming the metal-infiltrated polycrystalline diamond composite tool (60), the preform (40), and the coated diamond particles (20, 30) used in the tool (60) are also disclosed.

Abstract translation: 金属渗透的多晶金刚石复合工具（60），包括形成连续多晶金刚石基体（56）的多个金刚石晶粒（22），金属相（62）基本上无钯且与连续多晶金刚石基体 56），其中所述金属相（62）互穿所述连续多晶金刚石基体（56）并且基本上润湿所述连续多晶金刚石基体（56）的外表面; 和工作表面（68）。 金属相（62）由渗透剂（44）和设置在金刚石颗粒（22）的外表面上的润湿增强层（24）形成，浸润剂（44）和润湿增强层（24） ）基本上不含钯，并且包含至少一种由钴，铁和镍组成的组中的金属。 本发明还包括用于金属渗透的多晶金刚石复合工具（60）的预成型件（40），所述预制件（40）包括容器（52），金属浸渗源（54）和多个涂层钻石（20 ），每个涂覆有润湿增强层（24）和任选的活化层（34），两者都基本上不含钯。 还公开了在工具（60）中使用的形成金属渗透的多晶金刚石复合工具（60），预成型件（40）和涂覆的金刚石颗粒（20,30）的方法。

公开(公告)号：AU2003231062A1

公开(公告)日：2003-11-11

申请号：AU2003231062

申请日：2003-04-24

Applicant: GEN ELECTRIC

Inventor： GIDDINGS ROBERT ARTHUR ,  AHLGREN FREDERIC FRANCIS ,  MCNULTY THOMAS FRANCIS ,  PENDER DAVID CHARLES ,  LOU VICTOR LIEN-KONG

IPC: C03C17/04 ,  C03B32/02 ,  C03C10/00 ,  C03C10/14 ,  C03C17/23 ,  C30B35/00 ,  C30B15/10

Abstract: A fused quartz article, such as a muffle tube or crucible, with enhanced creep resistance. The enhanced creep resistance is the result of controlled devitrification of the fused quartz article. Controlled devitrification is achieved by coating the article with a colloidal silica slurry doped with metal cations, such as barium, strontium, and calcium. The metal cations in the slurry promote nucleation and growth of cristobalite crystals into the fused quartz at temperatures in the range from about 1000° C. to about 1600° C. The cristobalite has significantly. higher viscosity, and therefore greater creep resistance at elevated temperatures, than fused quartz. Methods for applying a doped coating to a fused quartz article and improving the creep resistance of a fused quartz article are also disclosed.

公开(公告)号：ZA200307114B

公开(公告)日：2004-07-01

申请号：ZA200307114

申请日：2003-09-11

Applicant: GEN ELECTRIC

Inventor： PENDER DAVID CHARLES ,  EVELYN MARK PHILIP D ,  IACOVANGELO CHARLES DOMINIC ,  TYSOE STEVEN ALFRED

IPC: B22F1/02 ,  B23B27/14 ,  B23B27/20 ,  C04B37/00 ,  C04B41/45 ,  C04B41/51 ,  C04B41/52 ,  C04B41/81 ,  C04B41/88 ,  C04B41/89 ,  C22C1/05 ,  C22C26/00 ,  C22C

Abstract: A metal-infiltrated polycrystalline diamond composite tool comprising a plurality of diamond grains forming a continuous polycrystalline diamond matrix, a metallic phase being substantially palladium-free and contiguous to the continuous polycrystalline diamond matrix, wherein the metallic phase interpenetrates the continuous polycrystalline diamond matrix and substantially wets an outer surface of the continuous polycrystalline diamond matrix; and a working surface. The metallic phase is formed from an infiltrant and a wetting-enhancement layer disposed on the outer surfaces of the diamond particles, with both the infiltrant and wetting-enhancement layer being substantially palladium-free and comprising at least one metal from the group consisting of cobalt, iron, and nickel. The invention also includes a preform for a metal-infiltrated polycrystalline diamond composite tool, the perform comprising a container, a metallic infiltrant source, and a plurality of coated diamonds, each coated with a wetting-enhancement layer and, optionally, an activation layer, both of which are substantially palladium-free. Methods of forming the metal-infiltrated polycrystalline diamond composite tool, the preform, and the coated diamond particles used in the tool are also disclosed.