SE9700958D0 - Crucible for the production of analogue test bodies and the manufacture of such crucible - Google Patents
Crucible for the production of analogue test bodies and the manufacture of such crucibleInfo
- Publication number
- SE9700958D0 SE9700958D0 SE9700958A SE9700958A SE9700958D0 SE 9700958 D0 SE9700958 D0 SE 9700958D0 SE 9700958 A SE9700958 A SE 9700958A SE 9700958 A SE9700958 A SE 9700958A SE 9700958 D0 SE9700958 D0 SE 9700958D0
- Authority
- SE
- Sweden
- Prior art keywords
- crucible
- boron nitride
- slurry
- coated
- drying
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A crucible used for optical or X-ray spectral analysis of useable sample bodies by oxidative melting of the sample material in lithium borate flux comprises a ceramic material with an open porosity. At least part of the crucible that comes into contact with the sample material, flux or melt is coated with an air permeable protective layer essentially comprising boron nitride particles. The preparation of these crucibles is also claimed, comprising the formation of a crucible body from a ceramic casting material that contains a high proportion of chamotte, then drying and firing the cast at ca. 1100-1200 deg.C, and then coating part of the porous crucible with a boron nitride slurry using spraying, slurry casting, doping or other application techniques, before finally drying the coated crucible. Preferably the boron nitride slurry comprises 50-80 % volatile organic liquid, 10-30 % boron nitride particles, 1-10 % combustible organic binder, 1-10 % high temperature inorganic binder and an even smaller amount of anti-foaming agent and pH regulator. The slurry coating is pre-dried and then wetted with an aqueous silica sol before the final drying step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9700958A SE513273C2 (en) | 1997-03-17 | 1997-03-17 | Crucible for spectral analysis of mineral samples melted with a lithium borate flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9700958A SE513273C2 (en) | 1997-03-17 | 1997-03-17 | Crucible for spectral analysis of mineral samples melted with a lithium borate flux |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE9700958D0 true SE9700958D0 (en) | 1997-03-17 |
| SE9700958L SE9700958L (en) | 1998-09-18 |
| SE513273C2 SE513273C2 (en) | 2000-08-14 |
Family
ID=20406183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9700958A SE513273C2 (en) | 1997-03-17 | 1997-03-17 | Crucible for spectral analysis of mineral samples melted with a lithium borate flux |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE513273C2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2849650B1 (en) * | 2003-01-06 | 2006-12-08 | Gerard Lang | BORATE GLASS AS A FONDANT FOR PRODUCING PEARLS INTENDED FOR X-FLUORESCENCE ANALYSIS, AND PROCESS FOR PREPARING SAID GLASS |
| CA2977255C (en) * | 2015-03-06 | 2023-01-31 | Imp Group (Pty) Ltd | A method and a container for preparing a fused sample for analysis |
-
1997
- 1997-03-17 SE SE9700958A patent/SE513273C2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE9700958L (en) | 1998-09-18 |
| SE513273C2 (en) | 2000-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |