GB1376342A - Cathodochromic material - Google Patents
Cathodochromic materialInfo
- Publication number
- GB1376342A GB1376342A GB5248071A GB5248071A GB1376342A GB 1376342 A GB1376342 A GB 1376342A GB 5248071 A GB5248071 A GB 5248071A GB 5248071 A GB5248071 A GB 5248071A GB 1376342 A GB1376342 A GB 1376342A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathodochromic
- sodalite
- nov
- exposure
- discussed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K9/00—Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/64—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing aluminium
- C09K11/648—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
1376342 Terebrescent materials and uses thereof MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 11 Nov 1971 [25 Nov 1970 25 Feb 1971] 52480/71 Heading C4S A cathodochromic material (e.g. in a c.r.t.) comprises wherein X is one of F, Cl, Br and I, is a halogen vacancy, 0À1#x#0À8, 0#y#4 for M=Li, 0#y#2 for M=K, and 0#z#x and wherein synthesis is by sintering without reduction. Cathodochromic mechanisms are discussed and reference made to dark trace c.r.t. applications and total erasure by light and sodalite of general formula Na 8 Al 6 SiO 6 O 24 .SO 4 . In fabrication, the mix is sintered at gradually elevated temperatures (e.g. 800‹ to 1000‹ C.) in a covered Pt crucible. Fig. 2 (not shown) indicates lattice constant γ absorption wavelength for varying x, peak absorption being the same for X-rays and electrons. Fig. 3 (not shown) illustrates peak coloration contrast γ, x for a 40 to 50 Ám sodalite member on an Al foil and bombarded by a 15 kv, 8 mm. beam of 100 ÁQ/ cm.<SP>2</SP> exposure; other beam parameters are disclosed. Effects of the SO 4 <SP>2-</SP> ion are discussed. The remaining Figs. (not shown), illustrate Cr or C t as a function of exposure and x values. Prior art sodalites are referred to, and methods of preparation of same, e.g. by hydrothermal treatment and reduction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10423570A JPS4921665B1 (en) | 1970-11-25 | 1970-11-25 | |
| JP1005071 | 1971-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1376342A true GB1376342A (en) | 1974-12-04 |
Family
ID=26345220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5248071A Expired GB1376342A (en) | 1970-11-25 | 1971-11-11 | Cathodochromic material |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA969754A (en) |
| DE (1) | DE2158308C3 (en) |
| FR (1) | FR2115990A5 (en) |
| GB (1) | GB1376342A (en) |
| NL (1) | NL7116143A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7208817A (en) * | 1972-06-27 | 1974-01-02 |
-
1971
- 1971-11-11 GB GB5248071A patent/GB1376342A/en not_active Expired
- 1971-11-17 CA CA127,906A patent/CA969754A/en not_active Expired
- 1971-11-24 FR FR7142050A patent/FR2115990A5/fr not_active Expired
- 1971-11-24 NL NL7116143A patent/NL7116143A/xx unknown
- 1971-11-24 DE DE19712158308 patent/DE2158308C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2158308B2 (en) | 1979-01-04 |
| DE2158308A1 (en) | 1972-06-15 |
| NL7116143A (en) | 1972-05-29 |
| CA969754A (en) | 1975-06-24 |
| FR2115990A5 (en) | 1972-07-07 |
| DE2158308C3 (en) | 1979-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Cronemeyer et al. | The optical absorption and photoconductivity of rutile | |
| Merz et al. | Charge conversion of irradiated rare-earth ions in calcium fluoride. I | |
| Turner et al. | V centers in single crystal Al2O3 | |
| Medved | Hackmanite and its tenebrescent properties | |
| Bishay | Role of Cerium in Suppression of Gamma‐Ray Induced Coloring of Borate Glasses | |
| Mahr | Ultraviolet absorption of the mixed system KCl-KBr | |
| GB1376342A (en) | Cathodochromic material | |
| US2569793A (en) | Ultraviolet irradiation | |
| Shivaramu et al. | Charge carrier trapping processes in un-doped and BaAl2O4: Eu3+ nanophosphor for thermoluminescent dosimeter applications | |
| US2761846A (en) | Scotophor and method of making same | |
| Ghoneim et al. | Gamma‐Ray Interaction with Lead Borate and Lead Silicate Glasses Containing Manganese | |
| Phillips | Properties of cathodochromic sodalite | |
| US2244558A (en) | Fluorescent material | |
| Rahman et al. | Irradiation-induced valence conversion of samarium ions in Na 2 SO 4 | |
| US3637518A (en) | Phosphor for thermoluminescent radiation dosimeter | |
| US3705323A (en) | Cathodochromic sodalite and cathode ray tube employing same | |
| US3598750A (en) | Photochromic image device | |
| Levy et al. | Radiation induced colour centres in Fused Quartz | |
| Turner | Mollwo-Ivey relations for the alkaline earth oxides and fluorides | |
| TANAKA et al. | Photochromic Effect in Fe‐Doped PLZT Ceramics | |
| US3196743A (en) | Light modulation device employing a scotophoric light valve | |
| Ueta et al. | Interaction of Exciton with Electron Trapping Centers in Alkali Halide Crystals. 2. Quantum Yield for the U→ F Conversion and Its Dependence on U-Center Concentration | |
| Mason et al. | X-ray photoemission studies of the lead halide valence bands | |
| US3926836A (en) | Process for preparing phosphor for thermoluminescent radiation dosimeter | |
| US3911315A (en) | Cathode ray tube whose image screen is both cathodochromic and fluorescent and the material for the screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PE20 | Patent expired after termination of 20 years |