JPS6418975A - Refractory material having excellent corrosion resistance against halogen-based flux - Google Patents
Refractory material having excellent corrosion resistance against halogen-based fluxInfo
- Publication number
- JPS6418975A JPS6418975A JP62174814A JP17481487A JPS6418975A JP S6418975 A JPS6418975 A JP S6418975A JP 62174814 A JP62174814 A JP 62174814A JP 17481487 A JP17481487 A JP 17481487A JP S6418975 A JPS6418975 A JP S6418975A
- Authority
- JP
- Japan
- Prior art keywords
- silicon nitride
- open pore
- refractory material
- corrosion resistance
- pore ratio
- 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.)
- Pending
Links
- 230000004907 flux Effects 0.000 title abstract 4
- 239000011819 refractory material Substances 0.000 title abstract 3
- 230000007797 corrosion Effects 0.000 title abstract 2
- 238000005260 corrosion Methods 0.000 title abstract 2
- 229910052736 halogen Inorganic materials 0.000 title abstract 2
- 150000002367 halogens Chemical class 0.000 title abstract 2
- 229910052581 Si3N4 Inorganic materials 0.000 abstract 6
- 239000011148 porous material Substances 0.000 abstract 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract 6
- 239000000919 ceramic Substances 0.000 abstract 3
- 239000011521 glass Substances 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract 1
- 229910000510 noble metal Inorganic materials 0.000 abstract 1
Landscapes
- Ceramic Products (AREA)
Abstract
PURPOSE:To obtain a refractory material having excellent corrosion resistance against a halogen-based flux, especially a flux for the treatment of noble metals, by using a silicon nitride ceramic having an open pore ratio lower than a specific level as a component of the material. CONSTITUTION:The objective refractory material is composed of a silicon nitride ceramic having an open pore ratio of <=20%. The open pore ratio of the silicon nitride ceramic is restricted to <=20% by the following reason. In a porous material having an open pore ratio of higher than the above limit, the silicon nitride is liable to be oxidized in air and is reacted with a fluoride flux to form a glass. Accordingly, the formed glass enters into the open pore of the silicon nitride and breakage of the material takes place after repeated use by the difference of thermal expansion between the glass and the reacted sintered silicon nitride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62174814A JPS6418975A (en) | 1987-07-15 | 1987-07-15 | Refractory material having excellent corrosion resistance against halogen-based flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62174814A JPS6418975A (en) | 1987-07-15 | 1987-07-15 | Refractory material having excellent corrosion resistance against halogen-based flux |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6418975A true JPS6418975A (en) | 1989-01-23 |
Family
ID=15985131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62174814A Pending JPS6418975A (en) | 1987-07-15 | 1987-07-15 | Refractory material having excellent corrosion resistance against halogen-based flux |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6418975A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104870813A (en) * | 2013-03-28 | 2015-08-26 | 萱场工业株式会社 | Pump volume control device |
-
1987
- 1987-07-15 JP JP62174814A patent/JPS6418975A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104870813A (en) * | 2013-03-28 | 2015-08-26 | 萱场工业株式会社 | Pump volume control device |
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