Ihe mkpuchi chromate maka elu aluminom

A na-edozi ihe mkpuchi aluminom na aluminom site na mkpuchi ngbanwe na-eguzogide corrosion nke a na-akpọ " mkpuchi chromate" ma ọ bụ "chromating". General usoro bụ iji hichaa elu aluminom wee tinye ihe mejupụtara chromium acid na elu ahụ dị ọcha. Ihe mkpuchi ngbanwe Chromium na-eguzogide corrosion nke ukwuu ma na-enye ezigbo njide mkpuchi na-esote. Enwere ike itinye ụdị mkpuchi dị iche iche na-esote na mkpuchi ntụgharị chromate iji mepụta elu a na-anabata.

Ihe anyị na-akpọ dị ka phosphating na ígwè ígwè a na-akpọ chromating maka aluminum na-ebupụta. A makwaara ya dị ka mkpuchi alodine. Enwere odo, akwụkwọ ndụ akwụkwọ ndụ na ụdị chromating transperent. Uwe mkpuchi chromate na-acha odo odo Cr+6, mkpuchi chromate akwụkwọ ndụ akwụkwọ ndụ Cr+3. Ibu mkpuchi mkpuchi nwere ike ịdị iche dabere na oge ngwa na ụdị mkpuchi. Okpomọkụ ihicha agaghị agafe 65º C maka chromate odo na 85º C maka mkpuchi chromate na-acha akwụkwọ ndụ akwụkwọ ndụ na nke doro anya.

Ọ dị mkpa ịnye elu dị ọcha, griiz n'efu tupu ngwa chromate. Ọ bụrụ na a kwadebere bat na-ekpo ọkụ na-ekpo ọkụ, a pụrụ iji bat caustic na-eso bat nitric acid mee ihe. N'aka nke ọzọ, ụlọ ịsa ahụ na-emebi acidic nwere ikike ịpụta n'onwe ya. Chromate na nrapanye agba ga-aka mma n'elu aluminom pickled na nke mebiri emebi.

Tinyere n'inye nnukwu nguzogide corrosion na agba adhesion n'elu aluminom, a maara nke ọma na enwere ike imeziwanye ọchịchọ anya site na ịmepụta mkpuchi chromate site na ịkpọtụrụ n'elu ya na ngwọta ngbanwe nke mmiri mmiri nwere ion chromium na ihe mgbakwunye ndị ọzọ.