公开(公告)号：EP1492143A2

公开(公告)日：2004-12-29

申请号：EP04253113.7

申请日：2004-05-27

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Venugopal, Shankar Mandras ,  Srivastava, Alok M. ,  Comanzo, Holly Ann ,  Midha, Vikas ,  Beers, William Winder ,  Ramachandran, Gopi Chandran ,  Adyam, Mukunda Srinivas

IPC: H01J1/14 ,  H01J9/04 ,  H01J61/06

CPC classification number: H01J1/144 ,  H01J61/0677 ,  H01J61/0737

Abstract: An electron emissive composition comprises a barium tantalate composition in an amount of about 50 to about 95 wt% and a ferroelectric oxide composition in an amount of about 5 to about 50 wt%, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition in an amount of about 50 to about 95 wt% with a ferroelectric oxide composition in an amount of about 5 to about 50 wt% to form an electron emissive precursor composition, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition and sintering the composition at a temperature of about 1000°C to about 1700°C.

Abstract translation: 电子发射组合物包含约50至约95重量％的钽酸钡组合物和约5至约50重量％的铁电氧化物组合物，其中重量百分比基于钡的总重量 钽酸盐组成和铁电氧化物组成。 制造电子发射组合物的方法包括将约50至约95重量％的钽酸钡组合物与约5至约50重量％的量的铁电氧化物组合物混合以形成电子发射前体组合物，其中 重量百分比基于钽酸钡组合物和铁电氧化物组合物的总重量，并在约1000℃至约1700℃的温度下烧结该组合物。

公开(公告)号：EP1492144A3

公开(公告)日：2007-08-08

申请号：EP04253123.6

申请日：2004-05-27

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Venugopal, Shankar Madras ,  Srivastava, Alok M. ,  Comanzo, Holly Ann ,  Midha, Vikas ,  Beers, William Winder ,  Ramachandran, Gopi Chandran ,  Adyam, Mukunda Srinivas

IPC: H01J1/14 ,  H01J61/06 ,  H01J9/04

CPC classification number: H01J1/146 ,  H01J1/14 ,  H01J61/0677 ,  H01J61/0737

Abstract: An electron emissive composition comprises a barium tantalate composition of the formula (Ba 1-x , Ca x , Sr p , D q ) 6 (Ta 1-y , W y , E t , F u , G v , Ca w ) 2 O (11 ± δ) where δ is an amount of about 0 to about -3; and wherein D is either an alkali earth metal ion or an alkaline earth ion; E, F, and G, are alkaline earth ions and/or transition metal ion; x is an amount of up to about 0.7; y is an amount of up to about 1; p and q are amounts of up to about 0.3; and t is an amount of about 0.05 to about 0.10, u is an amount of up to about 0.5, v is an amount of up to about 0.5 and w is an amount of up to about 0.25. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition with a binder; and sintering the barium tantalate composition with the binder at a temperature of about 1000°C to about 1700°C.

公开(公告)号：EP1492143A3

公开(公告)日：2007-08-08

申请号：EP04253113.7

申请日：2004-05-27

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Venugopal, Shankar Mandras ,  Srivastava, Alok M. ,  Comanzo, Holly Ann ,  Midha, Vikas ,  Beers, William Winder ,  Ramachandran, Gopi Chandran ,  Adyam, Mukunda Srinivas

IPC: H01J1/14 ,  H01J9/04 ,  H01J61/06

CPC classification number: H01J1/144 ,  H01J61/0677 ,  H01J61/0737

Abstract: An electron emissive composition comprises a barium tantalate composition in an amount of about 50 to about 95 wt% and a ferroelectric oxide composition in an amount of about 5 to about 50 wt%, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition in an amount of about 50 to about 95 wt% with a ferroelectric oxide composition in an amount of about 5 to about 50 wt% to form an electron emissive precursor composition, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition and sintering the composition at a temperature of about 1000°C to about 1700°C.

公开(公告)号：EP1492144A2

公开(公告)日：2004-12-29

申请号：EP04253123.6

申请日：2004-05-27

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Venugopal, Shankar Madras ,  Srivastava, Alok M. ,  Comanzo, Holly Ann ,  Midha, Vikas ,  Beers, William Winder ,  Ramachandran, Gopi Chandran ,  Adyam, Mukunda Srinivas

IPC: H01J1/14 ,  H01J61/06 ,  H01J9/04

CPC classification number: H01J1/146 ,  H01J1/14 ,  H01J61/0677 ,  H01J61/0737

Abstract: An electron emissive composition comprises a barium tantalate composition of the formula (Ba 1-x , Ca x , Sr p , D q ) 6 (Ta 1-y , W y , E t , F u , G v , Ca w ) 2 O (11 ± δ) where δ is an amount of about 0 to about -3; and wherein D is either an alkali earth metal ion or an alkaline earth ion; E, F, and G, are alkaline earth ions and/or transition metal ion; x is an amount of up to about 0.7; y is an amount of up to about 1; p and q are amounts of up to about 0.3; and t is an amount of about 0.05 to about 0.10, u is an amount of up to about 0.5, v is an amount of up to about 0.5 and w is an amount of up to about 0.25. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition with a binder; and sintering the barium tantalate composition with the binder at a temperature of about 1000°C to about 1700°C.

Abstract translation: 电子发射组合物包括式（Ba 1-x，Ca x，Sr p，D q）6（Ta 1-y，W y，E t，F u，G v，Ca w）2的钽酸钡组合物 O（11±'）其中'是约0至约-3的量; 并且其中D是碱土金属离子或碱土金属离子; E，F和G是碱土离子和/或过渡金属离子; x是高达约0.7的量; y最多可达1; p和q是高达约0.3的量; 并且t为约0.05至约0.10的量，u为至多约0.5的量，v为至多约0.5的量，w为至多约0.25的量。 制造电子发射组合物的方法包括将钡钽酸盐组合物与粘合剂混合; 并在约1000℃至约1700℃的温度下用粘合剂烧结钽酸钡组合物。