PL73258B2 - - Google Patents
Download PDFInfo
- Publication number
- PL73258B2 PL73258B2 PL15162771A PL15162771A PL73258B2 PL 73258 B2 PL73258 B2 PL 73258B2 PL 15162771 A PL15162771 A PL 15162771A PL 15162771 A PL15162771 A PL 15162771A PL 73258 B2 PL73258 B2 PL 73258B2
- Authority
- PL
- Poland
- Prior art keywords
- alloy
- silver
- alloys
- annealed
- aluminum
- Prior art date
Links
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- 239000000956 alloy Substances 0.000 claims description 18
- 229910052709 silver Inorganic materials 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 7
- 239000004332 silver Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000563 toxic property Toxicity 0.000 description 1
Landscapes
- Adornments (AREA)
Description
Pierwszenstwo: 18.11.1971 (P. 151627) Zgloszenie ogloszono: 30.05.1973 Opis patentowy opublikowano: 09.12.1974 73258 KI. 40b,5/00 MKP C22c5/00 Twórcawynalazku: Barbara Dukiet-Zawadzka Uprawniony z patentu tymczasowego: Polska Akademia Nauk Zaklad Podstaw Metalurgii, Kraków (Polska) Stop na bazie srebra, zwlaszcza do wytwarzania przedmiotów powszechnego uzytku i sposób wytwarzania tego stopu Przedmiotem wynalazku jest stop na bazie srebra, zwlaszcza do wytwarzania przedmiotów powszechnego uzytku i sposób wytwarzania tego stopu.Znane stopy srebrowe do wytwarzania wyrobów uzytku powszechnego takich jak lyzki, widelce, noze, galanteria itp. stanowia w istocie stopy srebra z miedzia, której zawartosc wynosi do 20%. Stopy te wyrózniaja sie jednak znaczna sklonnoscia do ulegania korozjii zmiany koloru, a to w nastepstwie tego, ze sklad chemiczny ich krysztalów jest niejednakowy. Mianowicie, obok odpornych na korozje krysztalów bogatych w srebro oma¬ wiane stopy Ag-Cu zawieraja zawsze krysztaly bogate w miedz, których podatnosc na korozje jest bardzo duza i proporcjonalna do zawartosci miedzi w stopie.Okazalo sie, ze wad powyzszych nie wykazuja stopy na bazie srebra wedlug wynalazku, które zamiast miedzi zawieraja aluminium w ilosci nie wiekszej niz 5% ciezarowych.Zrozumiale jest przy tym, ze wprowadzenie do skladu stopu wedlug wynalazku innych dodatków modyfi¬ kujacych, zwlaszcza metali w niewielkiej ilosci, nie zmienia istoty niniejszego wynalazku.Stwierdzono, ze najlepsze wlasciwosci stopu uzyskuje sie wówczas, gdy skladniki stopowe, mianowicie srebro, aluminium z ewentualnymi dodatkami modyfikujacymi stopi sie w znany sposób, a nastepnie podda sie zgodnie z wynalazkiem wyzarzaniu w temperaturze 600—750°C.W wyniku postepowania- sposobem wedlug wynalazku otrzymuje sie stopy Ag—Al o bialym kolorze, o duzej jednorodnosci (a zatem i odpornosci na korozje), przy czym o dobrej podatnosci na obróbke na zimno, posiadajace twardosc do HB = 60.Przyklad. W tyglu grafitowym stapia sie srebro, nastepnie dodaje sie don aluminium w ilosci 5% ciezarowych i calosc stapia sie, a nastepnie wyzarza w temperaturze 750°C w czasie 2 godzin. Otrzymuje sie stop o twardosci 60 HB. Próbke tego stopu umieszczona w srodowisku soli kuchennej nie wykazuje tendencji do zmiany barwy i pokrywania sie nalotem.Analogiczna próba wykonana ze znanym stopem — 80% Ag i 20% Cu spowodowala powstanie na powierz¬ chni zielonego nalotu o wlasciwosciach toksycznych.2 73258 PL PLPriority: November 18, 1971 (P. 151627) Application announced: May 30, 1973 Patent description was published: December 9, 1974 73258 KI. 40b, 5/00 MKP C22c5 / 00 Inventor: Barbara Dukiet-Zawadzka Authorized by the provisional patent: Polska Akademia Nauk Zaklad Podstaw Metallurgii, Kraków (Poland) Silver-based alloy, especially for the production of consumer goods, and the method of producing this alloy. an alloy based on silver, especially for the production of consumer goods and the method of producing this alloy. Known silver alloys for the production of consumer goods such as spoons, forks, knives, accessories, etc. are in fact silver alloys with copper, the content of which is up to 20% . These alloys, however, are distinguished by a significant tendency to corrode and change color as a result of the fact that the chemical composition of their crystals is not the same. Namely, apart from corrosion-resistant crystals rich in silver, the discussed Ag-Cu alloys always contain copper-rich crystals, the susceptibility to corrosion of which is very high and proportional to the copper content in the alloy. It turned out that the above-mentioned disadvantages are not shown by alloys based on silver according to the invention, which instead of copper contain aluminum in an amount not greater than 5% by weight. It is also understood that the inclusion of other modifying additives in the alloy according to the invention, especially metals in a small amount, does not change the essence of the present invention. that the best properties of the alloy are obtained when the alloying elements, namely silver, aluminum with possible additives are melted in a known manner, and then subjected to annealing according to the invention at a temperature of 600-750 ° C. As a result of the procedure according to the invention, alloys are obtained Ag-Al with a white color, high homogeneity (and therefore corrosion resistance), with with good cold workability, having hardness up to HB = 60. Silver is melted in a graphite crucible, then 5% by weight of aluminum donut is added and the whole is melted, then annealed at 750 ° C for 2 hours. An alloy with a hardness of 60 HB is obtained. A sample of this alloy placed in the environment of table salt did not show a tendency to discolor or tarnish. An analogous test performed with a known alloy - 80% Ag and 20% Cu caused the formation of a green bloom on the surface with toxic properties. 2 73258 EN EN
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15162771A PL73258B2 (en) | 1971-11-18 | 1971-11-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15162771A PL73258B2 (en) | 1971-11-18 | 1971-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL73258B2 true PL73258B2 (en) | 1974-08-31 |
Family
ID=19956268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL15162771A PL73258B2 (en) | 1971-11-18 | 1971-11-18 |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL73258B2 (en) |
-
1971
- 1971-11-18 PL PL15162771A patent/PL73258B2/pl unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101223546B1 (en) | An al-si-mg-zn-cu alloy for aerospace and automotive castings | |
| KR102839058B1 (en) | Copper alloy preparation and method for manufacturing the same, resistor material for resistors and resistors using the same | |
| CA1208042A (en) | Rhenium-bearing copper-nickel-tin alloys | |
| US6841012B2 (en) | Anti-tarnish silver alloy | |
| EP1266974A1 (en) | Gold alloys and master alloys for obtaining them | |
| US4446102A (en) | Yellow gold jewelry alloy | |
| CN107779695A (en) | A kind of high corrosion resistant chain-less bicycle manufacture of casing of flowing | |
| KR102822556B1 (en) | Copper alloy preparation and method for manufacturing the same, resistor material for resistors and resistors using the same | |
| US3880678A (en) | Processing copper base alloy | |
| US3364016A (en) | Copper alloys for springs | |
| US20080069722A1 (en) | Metal alloy manufacturing | |
| US4173469A (en) | Magnesium alloys | |
| CA1066923A (en) | Magnesium alloys | |
| JPS62243725A (en) | Sulfide resistant silver alloy | |
| KR950014423B1 (en) | A copper-based metal alloy of improved type particularly for the contruction of electronic components | |
| PL73258B2 (en) | ||
| EP0506995A1 (en) | Alloy suitable for water supply installations and having improved machinability and forming properties | |
| US3252793A (en) | High strength corrosion resistant casting alloy | |
| US3764306A (en) | Copper base alloy | |
| JPS6314830A (en) | Sulfide resistant hard silver alloy | |
| Praiphruk et al. | Investigation of supersaturated silver alloys for high hardness jewelry application | |
| KR100219963B1 (en) | Copper alloy with weatherproof | |
| US4704253A (en) | Copper alloy for a radiator fin | |
| JPH0649571A (en) | Zinc alloy for casting, dimensional change-free, cast parts and heat treatment method for cast parts | |
| WO2021241502A1 (en) | Copper alloy bar material, method for producing same, resistive material for resistors using same, and resistor |