GB717541A - Improved ceramic moulding process - Google Patents
Improved ceramic moulding processInfo
- Publication number
- GB717541A GB717541A GB10081/52A GB1008152A GB717541A GB 717541 A GB717541 A GB 717541A GB 10081/52 A GB10081/52 A GB 10081/52A GB 1008152 A GB1008152 A GB 1008152A GB 717541 A GB717541 A GB 717541A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alumina
- gamma alumina
- per cent
- chromium
- nickel
- 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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Catalysts (AREA)
Abstract
Ammonia alum or aluminium sulphate, preferably anhydrous, is heated in an open clay vessel under a draught at 900 DEG -1100 DEG C to form gamma alumina.ALSO:Gamma alumina is used to bond powdered metals or alloys with or without ceramic powders. In examples, materials bonded are: alpha alumina alone or mixed with iron, an alloy of nickel (80 per cent.) and chromium (20 per cent.) or a mixture of the same two metals. At least 20 per cent. gamma alumina is used.ALSO:Refractory powder with or without metal powder is mixed with at least 20 per cent. of gamma alumina or a bonding agent containing gamma alumina, shaped and fired. Firing may be in vacuum or a reducing atmosphere and results in the formation of alpha alumina. In examples, materials bonded by gamma alumina are: alpha alumina; alpha alumina and iron; an alloy of nickel-chromium; and a mixture of nickel and chromium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB10081/52A GB717541A (en) | 1952-04-22 | 1952-04-22 | Improved ceramic moulding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB10081/52A GB717541A (en) | 1952-04-22 | 1952-04-22 | Improved ceramic moulding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB717541A true GB717541A (en) | 1954-10-27 |
Family
ID=9961102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10081/52A Expired GB717541A (en) | 1952-04-22 | 1952-04-22 | Improved ceramic moulding process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB717541A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE974245C (en) * | 1954-11-12 | 1960-11-03 | Siemens Planiawerke Ag | Process for the production of sintered shaped bodies, preferably made of hard materials |
-
1952
- 1952-04-22 GB GB10081/52A patent/GB717541A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE974245C (en) * | 1954-11-12 | 1960-11-03 | Siemens Planiawerke Ag | Process for the production of sintered shaped bodies, preferably made of hard materials |
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