1. Pom kev kuaj xyuas: xim thiab luster
Tooj liab: Ib qho sov, sib txawvreddish -} txiv kab ntxwv rau salmon - postxim. Freshly polished tooj liab muaj lub ci ci, nws yog xim av sheen, tab sis nws ua rau huab cua / noo noo) los ua ib lub ntsej muag huab cua lossis ntsuab patina (hu ua "Verdigris"). Lub patina no yog kos npe ntawm cov ntshiab los yog siab- Pip tooj liab (piv txwv, pennies pre-1982 hauv Asmeskas).
Tooj daj: Ib qho alloy ntawm tooj liab thiab zinc (ib txwm 60-70% tooj liab, 30-40% zinc), yog li nws cov xim yogDaj - kub rau kub - xim avCov. Qhov tseeb ntxoov ntxoo yog nyob ntawm Zinc cov ntsiab lus: ntau dua cov xim zinc yog qhov tsaus ntuj nti (piv txwv li cov neeg tooj daj Brass tarnishes maj mam qeeb dua li tooj liab, feem ntau txhim kho ib qho tsaus muag av lossis grey patina dua li ntsuab.
2. Hardness Ntsuam Xyuas: Tshawb Kuj
Tooj liab: Mos thiab malleable. Cov khoom ntse yuav yooj yim khawb nws cov npoo, tawm hauv cov cim pom. Nyias tooj liab nplooj (piv txwv li, tooj liab ntawv ci) tuaj yeem bent pheej tsis txhob tawg.
Tooj daj: Nyuaj thiab tsawg dua malleable. Khawb nws nrog tib qho khoom yuav tsum tau quab yuam ntau dua, thiab khawb yuav yog qhov sib txawv lossis tsawg dua. Daim nyias nyias tooj daj nyias nyias pieces (piv txwv li tooj dag sheet hlau) yuav khoov ib zaug tab sis feem ntau yuav tawg lossis tawm tsam ntxiv.
3. Cov hlau nplaum sim: Sib Nqus Teb
Tooj liab: Tsis - sib nqus. Cov hlau nplaum (piv txwv li, cov hlau txias txias) yuav tsis lo rau nws txhua.
Tooj daj: Tsis -} sib nqus (tshwj tsis yog nws muaj cov hlau me me, uas yog tsawg hauv tus qauv cim tooj). Hlau nplaum yuav tsis lo rau tooj dag.
4. Nyhav xeem: Kev sib piv sib piv
Density: ~ 8.96 g / cm³
Tooj dag ntom: ~ 8.7-8.7 g / cm³ (sib txawv nrog zinc cov ntsiab lus; siab dua zinc=qis ntom ntom)
5. Suab Ntsuas: Tonal Sib txawv
Tooj liab: Tsim tawm anpub, muted thudlos yog tsawg {- pitched nplhaib uas fades sai sai. Qhov no yog vim tias tooj liab absigbs suab zog yooj yim dua.
Tooj daj: Tsim tawm akaj, siab - lub nplhaib ntiv nplhaibUas kav ntev dua (zoo ib yam li lub tswb nrov lossis cymbal). Qhov no "resonant" yog vim li cas tooj dag yog siv rau twj paj nruas (piv txwv li, trumpets, trumprots, trumprots.
6. Kev ntsuas tshuaj (rau kev pom zoo, siv nrog kev ceev faj)
Khoom siv xav tau: Dawb vinegar (acetic acid) lossis kua txiv qaub, ib lub paj rwb muab hnab looj tes, thiab cov hnab looj tes (los tiv thaiv daim tawv).
Kev ua:
RUB ib thaj chaw me me ntawm cov hlau nrog cov paj rwb Swab dipped nyob rau hauv vinegar / txiv qaub kua txiv kom tshem tawm ib qho saum npoo Tarnish.
Soj ntsuam cov tshuaj tiv thaiv:
Tooj liab: Qhov chaw ntxuav yuav qhia nws lub ntsej muag liab ploog -}} txiv kab ntxwv xim. Sij hawm dhau los (feeb rau lub sijhawm), tus tooj liab tau pib rov ua kom tsaus muag ntsuab, Verdigrisce nrog cov kua qaub thiab huab cua.
Tooj daj: Cov chaw ntxuav yuav qhia nws kub - daj xim. Brass reacts raint qeeb dua nrog cov acids me me, yog li nws yuav tsis tsim ntsuab zas sai thiab nws yuav qhib me ntsis xim av xwb).
