SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Fired Silver Paint: Precipitated Silver and Flux in Polyvinyl Alcohol with Ammonia (Gray, Erie Resistor 1954, Ex. 1)
A paint for putting silver electrodes on ceramic, glass or mica. Fine silver powder and a little ceramic flux are held in polyvinyl alcohol dissolved in water, with a trace of ammonia to make the wet paint conduct. So a capacitor can be measured while it is being painted. On firing, the silver becomes a film held on by the flux. The silver settles, so stir while painting.
Source: Robert B. Gray, US 2,695,275 (Erie Resistor, 1954), Example 1. Not given: how the silver was precipitated, which flux, the form of the ammonia, and the firing heat. Ours: precipitated silver made by reducing silver chloride with zinc, bismuth subnitrate as the flux (one Gray names), and strong ammonia water. Picture drawn by Youblob.
Mwanzo
1 day
Maagizo
1
1
Dissolve 4 g polyvinyl alcohol in the water
Dissolve 4 g polyvinyl alcohol in the water
For 100 g of paint: dissolve 4 g polyvinyl alcohol in the water, warming it to help it dissolve. The water is the balance, about 35 to 44 g. Warming is ours.
Vifaa kwa hatua hii:
Unga wa polivinili alkoholi4 g
Maji yaliyosafishwa kwa mvuke1 as requiredZana zinazohitajika:
Mizani ya mizani-mbili
Bikari ya Borosilikati
Sahani ya Kupasha Joto
Fimbo ya Kioo cha Borosilikati2
2
Grind in 50 g precipitated silver and the flux
Grind in 50 g precipitated silver and the flux
Grind 50 g precipitated silver and 2 to 10 g ceramic flux into the solution until smooth. Gray allows some silver chloride left in the silver. Ours: silver from the zinc route, and bismuth subnitrate, one of the fluxes Gray names. The right amount of flux depends on the ceramic.
Vifaa kwa hatua hii:
Fedha iliyotolewa kama mashapo50 g
Bismuthi subnitrati1 as requiredZana zinazohitajika:
Mizani ya mizani-mbili
Kinu na mchi
Glavu za Naitrili3
3
Add 0.2 to 1 % ammonia
Add 0.2 to 1 % ammonia
Stir in ammonia, 0.2 to 1 % of the paint. It evaporates from the film but makes the wet paint conduct. Ours: added as strong ammonia water. Sharp fumes: work in air, goggles.
Vifaa kwa hatua hii:
Myeyusho wa amonia - asilimia 25-281 as requiredZana zinazohitajika:
Fimbo ya Kioo cha Borosilikati
Miwani ya kinga dhidi ya kemikaliGlavu za Naitrili4
4
Stir while painting
Stir while painting
The silver in this paint settles, so stir it while it is being applied.
Zana zinazohitajika:
Fimbo ya Kioo cha BorosilikatiVifaa
5- Kishikilia Nafasi
- 1 as requiredKishikilia Nafasi
- Kishikilia Nafasi
- 1 as requiredKishikilia Nafasi
- 1 as requiredKishikilia Nafasi
Zana Zinazohitajika
7- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
Precipitated Silver: Silver Chloride Reduced by Zinc in Acidulated Water (Thorpe 1913)
na Charlie
Viwandani
6
0
0
0
0
0
Hatari
Bismuth Subnitrate: Bismuth through Nitrate and Carbonate to the White Powder (USP 1870)
na Charlie
Viwandani
1
0
0
0
0
0
Polyvinyl Alcohol: Polyvinyl Acetate Stirred in Alcoholic Potash
na Charlie
Polima
12
0
0
0
0
0
Hatari
Ammonia Water: Sal Ammoniac and Lime, Gas Caught in Cold Water
na Charlie
Isiyo hai
24
0
0
0
0
0
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.