公开(公告)号：WO1988008829A2

公开(公告)日：1988-11-17

申请号：PCT/US1988001496

申请日：1988-05-04

Applicant: COORS PORCELAIN COMPANY dba COORS CERAMICS ...

Inventor： COORS PORCELAIN COMPANY dba COORS CERAMICS ... ,  ROY, Donald, W. ,  HASTERT, James, L. ,  COUBROUGH, Lawrence, E. ,  GREEN, Kenneth, Edward ,  TRUJILLO, Aurelio

IPC: C04B35/04

CPC classification number: H01Q1/42 ,  C04B35/443

Abstract: A transparent polycrystalline body having high ultraviolet transmissivity is provided. The body is preferably a sintered magnesia-alumina spinel body having a transmittance of at least 85 percent in the wavelength range from 0.4 microns to 0.8 microns and a transmittance at some wavelength in the wavelength range between about 0.2 and about 0.4 microns of at least about 86 percent and a porosity of less than about 0.001 percent. The sintered body is produced by a two-step method comprising forming a closed porosity body from a spinel powder and subjecting the closed porosity body to a hot isostatic pressure treatment. The resulting body has high transmissivity of electromagnetic radiation in the range between about 0.2 microns and about 6 microns, is resistant to abrasion or erosion, does not substantially deteriorate after exposure to ultraviolet light, and has high strength. The sintered body is useful in a variety of applications, including as a dome and window for missiles and launch tubes.

Abstract translation: 提供了具有高紫外线透射率的透明多晶体。 本体优选为在0.4微米至0.8微米的波长范围内具有至少85％透射率的烧结氧化镁 - 氧化铝尖晶石体，并且在约0.2至约0.4微米的波长范围内的某些波长的透射率为至少约 86％，孔隙度小于约0.001％。 烧结体通过两步法制造，包括从尖晶石粉末形成封闭的孔隙体，并对封闭的孔隙体进行热等静压处理。 所得体的电磁辐射的透射率在约0.2微米至约6微米之间的范围内，耐磨损或侵蚀，在暴露于紫外线后基本上不会劣化，并具有高强度。 烧结体可用于各种应用，包括用于导弹和发射管的圆顶和窗口。

公开(公告)号：EP0447390A1

公开(公告)日：1991-09-25

申请号：EP88908431.0

申请日：1988-05-04

Applicant: COORS PORCELAIN COMPANY dba COORS CERAMICS COMPANY

Inventor： ROY, Donald, W. ,  HASTERT, James, L. ,  COUBROUGH, Lawrence, E. ,  GREEN, Kenneth, Edward ,  TRUJILLO, Aurelio

IPC: C04B35 ,  H01Q1

CPC classification number: H01Q1/42 ,  C04B35/443

Abstract: Le corps polycristallin ayant un facteur élevé de transmission des ultraviolets est de préférence un corps fritté en spinelle d'alumine-magnésie ayant un facteur de transmission d'au moins 85 % dans la gamme des longueurs d'ondes comprises entre 0,4 et 0,8 microns et un facteur de transmission à certaines longueurs d'ondes dans cette gamme entre 0,2 environ et 0,4 microns environ d'au moins 86 % environ et une porosité inférieure à 0,001 % environ. Le corps fritté est produit par un procédé en deux étapes consistant à former un corps à porosité fermée à partir d'une poudre de spinelle et à soumettre le corps à porosité fermée à un traitement chaud sous pression isostatique. Le corps obtenu possède un facteur de transmission élevé d'un rayonnement électromagnétique dans la plage comprise entre 0,2 microns et 6 microns environ, est résistant à l'abrasion ou à l'érosion, ne se détériore pratiquement pas après avoir été exposé à la lumière ultraviolette, et est très solide. Le corps fritté est utile dans une grande variété d'applications, y compris en temps que dôme et fenêtre pour des missiles et des tubes de lancement.

公开(公告)号：EP0447390B1

公开(公告)日：1994-02-02

申请号：EP88908431.5

申请日：1988-05-04

Applicant: COORS PORCELAIN COMPANY dba COORS CERAMICS COMPANY

Inventor： ROY, Donald, W. ,  HASTERT, James, L. ,  COUBROUGH, Lawrence, E. ,  GREEN, Kenneth, Edward ,  TRUJILLO, Aurelio

IPC: C04B35/44 ,  F41F3/04 ,  H01Q1/42

CPC classification number: H01Q1/42 ,  C04B35/443

Abstract: A transparent polycrystalline body having high ultraviolet transmissivity is provided. The body is preferably a sintered magnesia-alumina spinel body having a transmittance of at least 85 percent in the wavelength range from 0.4 microns to 0.8 microns and a transmittance at some wavelength in the wavelength range between about 0.2 and about 0.4 microns of at least about 86 percent and a porosity of less than about 0.001 percent. The sintered body is produced by a two-step method comprising forming a closed porosity body from a spinel powder and subjecting the closed porosity body to a hot isostatic pressure treatment. The resulting body has high transmissivity of electromagnetic radiation in the range between about 0.2 microns and about 6 microns, is resistant to abrasion or erosion, does not substantially deteriorate after exposure to ultraviolet light, and has high strength. The sintered body is useful in a variety of applications, including as a dome and window for missiles and launch tubes.

Abstract translation: 提供具有高紫外透射率的透明多晶体。 所述主体优选为烧结的氧化镁 - 氧化铝尖晶石主体，其在0.4微米至0.8微米的波长范围内具有至少85％的透射率，并且在约0.2微米至约0.4微米的波长范围内的一些波长处的透射率为至少约 86％，孔隙率小于约0.001％。 烧结体通过两步法生产，包括由尖晶石粉末形成封闭孔隙体并使封闭孔隙体进行热等静压处理。 所得到的物体具有大约0.2微米至大约6微米范围内的高电磁辐射透射率，耐磨损或侵蚀，在暴露于紫外光后基本上不会劣化，并且具有高强度。 烧结体可用于各种应用，包括导弹和发射管的圆顶和窗口。