JPS57106510A - Manufacture of si3n4 powder - Google Patents
Manufacture of si3n4 powderInfo
- Publication number
- JPS57106510A JPS57106510A JP55184526A JP18452680A JPS57106510A JP S57106510 A JPS57106510 A JP S57106510A JP 55184526 A JP55184526 A JP 55184526A JP 18452680 A JP18452680 A JP 18452680A JP S57106510 A JPS57106510 A JP S57106510A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- balls
- manufacture
- sinterability
- pulverization
- 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
- 239000000843 powder Substances 0.000 title abstract 7
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- 229910052581 Si3N4 Inorganic materials 0.000 abstract 5
- 229910045601 alloy Inorganic materials 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 230000002542 deteriorative effect Effects 0.000 abstract 2
- 239000012535 impurity Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000010298 pulverizing process Methods 0.000 abstract 2
- 229910009043 WC-Co Inorganic materials 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000003746 solid phase reaction Methods 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- 239000012808 vapor phase Substances 0.000 abstract 1
Landscapes
- Ceramic Products (AREA)
Abstract
PURPOSE: To prevent components of balls for pulverization made of superhard alloy from entering Si3N4 powder as impurities and deteriorating the sinterability of the powder as starting material for manufacturing a sintered Si3N4 body by coating the surfaces of the balls with Si3N4 and using the coated balls in the manufacture of the powder.
CONSTITUTION: Si3N4 synthesized by a solid phase reaction method or a vapor phase reaction method is pulverized using balls for pulverization made of superhard WC-Co alloy so that the average grain size is regulated to ≤1μm, and ≥90% of the resulting powder has ≤3μm grain size. By coating the surfaces of the used balls with Si3N4 in several μm W several mm thickness, WC and Co as ball components are prevented from entering the powder as impurities due to wear and deteriorating the sinterability of the powder.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55184526A JPS57106510A (en) | 1980-12-24 | 1980-12-24 | Manufacture of si3n4 powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55184526A JPS57106510A (en) | 1980-12-24 | 1980-12-24 | Manufacture of si3n4 powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57106510A true JPS57106510A (en) | 1982-07-02 |
Family
ID=16154736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55184526A Pending JPS57106510A (en) | 1980-12-24 | 1980-12-24 | Manufacture of si3n4 powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57106510A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62202873A (en) * | 1986-02-28 | 1987-09-07 | 株式会社 リケン | Ceramic sintered body and manufacture |
| JPS62288107A (en) * | 1986-05-24 | 1987-12-15 | バイエル・アクチエンゲゼルシヤフト | Sinterable si3n4 powder and manufacture |
-
1980
- 1980-12-24 JP JP55184526A patent/JPS57106510A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62202873A (en) * | 1986-02-28 | 1987-09-07 | 株式会社 リケン | Ceramic sintered body and manufacture |
| JPS62288107A (en) * | 1986-05-24 | 1987-12-15 | バイエル・アクチエンゲゼルシヤフト | Sinterable si3n4 powder and manufacture |
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