Ubufatanye
UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
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.
Utangiye
1 day
Amabwiriza
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.
Ibikoresho by'iyi ntambwe:
Ifu ya polyvinyl alcohol4 g
Amazi Yatunganyijwe1 as requiredIbikoresho bikenewe:
Umunzani w'ibiro
Igikombe cya Borosilikate
Urubaho rushyushya
Agati k'ikirahure cya borosilikate2
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.
Ibikoresho by'iyi ntambwe:
Feza yaguye hasi50 g
Sub-nitrate ya bismuth1 as requiredIbikoresho bikenewe:
Umunzani w'ibiro
Isekuru n'Umuhini
Uturindantoki twa Nitirile3
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.
Ibikoresho by'iyi ntambwe:
Umuti wa amoniyake wa 25-28 %1 as requiredIbikoresho bikenewe:
Agati k'ikirahure cya borosilikate
Amadarubindi yo Kwirinda IbinyabutabireUturindantoki twa Nitirile4
4
Stir while painting
Stir while painting
The silver in this paint settles, so stir it while it is being applied.
Ibikoresho bikenewe:
Agati k'ikirahure cya borosilikateIbikoresho
5- Umwanya
- 1 as requiredUmwanya
- 50 gUmwanya
- 1 as requiredUmwanya
- 1 as requiredUmwanya
Ibikoresho bikenewe
7- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
Blueprint zijyanye
Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame
Precipitated Silver: Silver Chloride Reduced by Zinc in Acidulated Water (Thorpe 1913)
na Charlie
By'Inganda
15
0
0
0
0
0
Akaga
Bismuth Subnitrate: Bismuth through Nitrate and Carbonate to the White Powder (USP 1870)
na Charlie
By'Inganda
7
0
0
0
0
0
Polyvinyl Alcohol: Polyvinyl Acetate Stirred in Alcoholic Potash
na Charlie
Polimeri
13
0
0
0
0
0
Akaga
Ammonia Water: Sal Ammoniac and Lime, Gas Caught in Cold Water
na Charlie
Bidafite Ubuzima
26
0
0
0
0
0
CC0 Umurenge rusange
Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.
Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.