Chromium

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Chromium
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Chromium, ū lâng kóng khu-ló͘-mih[3], sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 24, hoà-ha̍k hû-hō sī Cr[4].

Quick Facts Ki-pún sèng-chit, Miâ, hû-hō ...
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Hō-miâ

Pún goân-sò͘ ê miâ sī hō tùi Hi-lia̍p-gí ê chroma, ì-sū sī sek-chhái[5].

Sèng-chit kap lī-ēng

Chromium ê sek-tī sī ná kǹg-thih mô͘-iūⁿ ê phú-sek, i-ê sûn-chit chin chhè, ka-taⁿ ē-tàng ēng-lâi tō͘-kim. Nā tī ha̍p-kim siōng ê lī-ēng, Chromium ē-tàng èng-iōng ùi chè-thih sán-gia̍p, lām 0.5 kàu 3% ê Chromium, ē-tàng seng-sán kiông-tō͘ koân ê kǹg-thin. Chromium chò chú-iàu ê èng-iōng sī tī su-tén-lé-suh (stainless steel) ê seng-sán, lāi-té lām tai-khài 10.5 kàu 30% ê Chromium[4].

Le̍k-sú

Chromium siāng chá sī 1797 nî Nicolas-Louis Vaquelin chhōe tio̍h; 1895 nî ê sî, Hans Goldschmidt hun-lî chhut i-ê sûn-chit. Tī 19 sè-kí chá-kî, Hoat-kok kap Bí-kok chio̍h ū chhut-sán chit khoán kim-sio̍k, hit tong-sî Pennsylvania kap Maryland ê sán-chhut ē-tàng kong-èng thong sè-kài su-kiû[4].

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