1. Yog tooj liab-npib zoo?
Tooj liab-npib tsib xee (Cu-Ni) Alloys tau txiav txim siab rau lawv cov kev sib xyaw ua ke ntawm cov khoom, ua rau lawv "zoo" rau cov ntawv thov tshwj xeeb. Lawv cov ntsiab lus tseem ceeb muaj xws li corrosion zoo tshaj plaws, tshwj xeeb hauv ib puag ncig kev lag luam thiab cov tshuaj lom neeg uas tau ua rau ntsev ntsev, tshuaj av, lossis cov av siab siab yog ib qho. Lawv kuj pom zoo thermal thiab hluav taws xob conductivity, txawm hais tias tsis siab npaum li tus tooj liab ntshiab dhau ib qho kub. Tsis tas li ntawd, tooj liab-nickel alloys yog cooths, malloable yooj yim, thiab yooj yim weldable, uas yooj yim weldable, uas yooj yim weldable, uas yooj yim weldable, uas ua kom yooj yim tsim cov txheej txheem. Lawv txoj kev tawm tsam mus rau biofouling (kev loj hlob ntawm cov muaj sia ntawm marine) ntxiv rau lawv cov nqi hauv Maritime siv zoo li nkoj Hulls, cov kav dej, thiab kev hloov pauv hluav taws xob. Thaum lawv yuav kim dua li qee cov hlau (piv txwv li cov hlau), lawv cov kev xav tau kav ntev thiab tsis tshua muaj txiaj ntsig rau cov kev xaiv raug nqi ntev.
2. Yog tooj liab-nickel alloy muaj zog?
Tooj liab-nickel alloys muaj mob mentsis kom lub zog siab, nyob ntawm lawv muaj pes tsawg leeg thiab kho cua sov. Ntsiav ntshiab yog tus mos mos yog mos, tab sis ntxiv tsib xee (feem ntau 5-30% hauv kev lag luam alloys) loj nce zog. Piv txwv li, alloy C70600 (90% CU, 10% NI) muaj lub zog, thaum C71500 (70% CU, 30% NI) tuaj yeem ncav cuag 450-600 MPa. Lub zog no yog txaus rau ntau cov qauv kev siv thiab tshuab siv, xws li cov nkoj siab, cov tshuab hluav taws xob, thiab cov khoom siv roj hmab. Ntxiv mus, lawv lub zog tau khaws cia kub, thiab lawv tuaj yeem txhawb nqa ntxiv los ntawm kev ua haujlwm txias (xws li nce hardness thiab tensile lub zog yam tsis muaj zog. Thaum lawv tsis muaj zog npaum li cov neeg muaj zog lossis cov khoom siv titanium, lawv lub zog ua kom muaj zog thiab xeb kev ua kom lawv muaj zog hauv cov ntsiab lus uas cov khoom uas tseem ceeb heev.
3. Yog tooj liab-npib mos lwj?
Tooj liab-Nickel thoob plaws feem ntau tsis yog li muag muag li ntshiab tooj liab, tab sis lawv cov hardness sib txawv nrog kev sib xyaw thiab kev ua. Ntshiab tooj liab muaj lub brinell hardness ntawm ~ 35 HB, thaum tooj liab lub xeev, nce mus rau ~ 140-180 hb thaum txias-ua haujlwm. C71500 (30% ni) yog qhov nyuaj dua, nrog annealed hardness nyob ib ncig ntawm 100-140 HB thiab ua haujlwm txias hardness txog 200 HB. Qhov no txhais tau tias lawv muaj ntsis nyuaj-softer tshaj cov hlau tab sis nyuaj dua li cov tooj liab dawb ntshiab lossis cov brass alloys. Lawv lub ductility (muaj peev xwm ua kom muaj kev deform yam tsis muaj tawg) tseem ceeb, uas tau tsim kev sib npaug ntawm "kev ua haujlwm" txawm tias ua nyuaj dua li tooj liab.
4. Muaj peev xwm tooj liab-tsib xee xeb?
Tooj liab-nickel alloys tsis "xeb" hauv kev txiav txim ib txwm muaj. Tsw tshwj xeeb yog hais txog cov oxidation ntawm hlau (sib sau hlau oxide), thiab txij li tooj liab-tsibckel muaj tsis muaj hlau, nws tsis muaj xeb. Hloov chaw, cov alloys ua ib qho nyias nyias, tiv thaiv oxide txheej rau ntawm lawv cov npoo thaum uas raug huab cua lossis ya raws. Cov txheej no ruaj khov, adherent, thiab kev kho tus kheej - yog khawb, nws hloov ceev ceev kom tiv thaiv ntxiv corrosion. Nyob rau hauv cov av marine, txheej oxide no tshwj xeeb tshaj yog kev tawm tsam los ntawm Saltwater, c cons, thiab cov pa paug. Thaum lawv yuav tarnish (tsim ib qho npub patina) dhau sijhawm, qhov no yog kev hloov kho kom zoo nkauj thiab tsis muaj kev sib luag ntawm cov khoom siv ncaj ncees. Tsis zoo li cov hlau-raws li cov hlau, tooj liab-nickel alloys muaj kev tiv thaiv corrosion, ua rau lawv zoo tshaj rau kev siv rau kev siv xeb.
