Ifihan si pretreatment ti nickel foomu

foomu nickeljẹ ohun elo ti a lo fun ṣiṣe awọn amọna batiri, ati ilana iṣelọpọ ti awọn ohun elo foomu nickel lasan jẹ bi atẹle: kanrinkan polyurethane ti wa ni adaṣe ni akọkọ, lẹhinna electrodeposited, ati nikẹhin sintered.

Ni awọn igbesẹ ti o wa loke, itọju adaṣe ni gbogbogbo pẹlukemikali plating, bo conductive alemora, ati igbale platingni ọna mẹta; electrodeposition le jẹ imi-ọjọ tabi sulfamate nickel plating; ilana isunmọ ti o wa tẹlẹ ti pari ni akọkọ nipasẹ sisun afẹfẹ kuro ni sponge polyurethane, ati lẹhinna dinku ati sisọ sponge labẹ afẹfẹ hydrogen ti o dinku ni awọn igbesẹ meji, ninu eyiti afẹfẹ sisun kuro ni sponge polyurethane jẹ oxidized ati decarbonized ni iwọn otutu ti 300 si 700. °C. Ilana sintetiki ti pari nipasẹ sisun afẹfẹ kuro ni sponge polyurethane, ati lẹhinna idinku ati sisọ polyurethane sponge ni afẹfẹ afẹfẹ hydrogen; Itọju idinku naa ni a ṣe labẹ oju-aye idinku hydrogen ni iwọn otutu ti 800 si 1000 ° C fun awọn iṣẹju 30-60, ati afẹfẹ idinku jẹ gaasi jijẹ amonia, ati iye gaasi jijẹjẹ jẹ 0.8-1.2 L/g (giramu kọọkan ti nickel nilo 0.8-1.2 liters ti gaasi jijẹ amonia lati jẹ)

Ọna ti o ni ilọsiwaju ti ṣiṣefoomu nickel, Igbesẹ ti eyiti o ni ifarakanra, electrodeposition ati sintering ti kanrinkan polyurethane, ti a ṣe afihan ni wi pe igbesẹ sintering ni lati pyrolyze ati sinter foomu polyurethane taara ni oju-aye idinku lẹhin ti elekitirode, ninu eyiti bugbamu idinku jẹ gaasi jijẹ amonia, iwọn otutu idinku. jẹ 400-1000 ° C., akoko idinku jẹ awọn iṣẹju 30-60, ati iye agbara gaasi jijẹ jẹ 0.4-0.8 L / g. (Gramu kọọkan ti nickel nilo lati jẹ 0.4-0.8 liters ti gaasi jijẹ amonia.) Gaasi jijẹ amonia jẹ adalu nitrogen ati hydrogen, ati ipin iwọn didun ti nitrogen ati hydrogen jẹ 1: 3.

Awọn lenu siseto ni wipe lẹhin electrodeposition tifoomu nickelti o ni kanrinkan polyurethane taara ni idinku hydrogen idinku bugbamu pyrolysis sintering, nibiti erogba ati hydrogen igbese, ti o npese CH4, C2H6 ati awọn miiran gaseous hydrocarbons, awọn loke gasification ilana ti to lati yọ lẹẹdi C ni la kọja ara regede.

O yanju awọn ailagbara ti o wa tẹlẹ ninu imọ-ẹrọ ti o wa tẹlẹ ti foomu nickel ninu ilana isunmọ, bii irọrun lati kiraki, arching abuku, ikore kekere, agbara agbara giga, awọn ohun-ini ẹrọ nickel foomu ko ni iduroṣinṣin.