Molybdenum:

• Bụ ihe na-emekarị na 1778 site n'aka Carl Wilhelm Scheele, ọkà mmụta sayensị Sweden bụ onye chọpụtakwara oxygen na ikuku.
• Nwere otu n'ime ebe mgbaze kachasị elu nke ihe niile mana njupụta ya bụ naanị 25% iron ka ukwuu.
• Ọ dị na mmanụ dị iche iche, mana naanị molybdenite (MoS2) ka a na-eji na-emepụta ngwaahịa molybdenum nwere ike ịre ahịa.
• Nwere ọnụọgụ kacha ala nke mgbasawanye ọkụ nke ihe injinia ọ bụla.

Ebee ka o si abịa:

• A na-ahụ ogbunigwe molybdenum bụ isi na Canada, USA, Mexico, Peru na Chile. N'afọ 2008, ebe nchekwa ọla ruru tọn 19,000,000 (isi mmalite: US Geological Survey). China nwere ebe nchekwa kacha ukwuu nke USA na Chile sochiri ya.
• Molybdenite nwere ike ime dị ka naanị mineralization na ahụ ore, ma a na-ejikọta ya na mineral sulfide nke ọla ndị ọzọ, karịsịa ọla kọpa.

Kedu ka esi edozi ya:

• A na-egweri ọla ndị a na-egwupụta, na-egweri, na-agwakọta ya na mmiri mmiri ma na-eme ka mmiri na-agba ọsọ iji kewaa mineral ndị dị na nkume.
• Nleba anya na-esi na ya pụta nwere n'etiti 85% na 92% molybdenum disulfide (MoS2). Ikpocha nke a n'ikuku na 500 ruo 650 Celsius C na-emepụta mpụta molybdenite a ṅara n'ọkụ ma ọ bụ RMC (Mo03), nke a makwaara dị ka Technical Mo oxide ma ọ bụ tech oxide. A na-eji ihe dị ka 40 ruo 50% nke molybdenum mee ihe n'ụdị a, tumadi dị ka ihe na-emepụta ihe na ngwaahịa ígwè.
• A na-edozi 30-40% nke mmepụta RMC n'ime ferromolybdenum (FeMo) site na ịgwakọta ya na ígwè oxide na ibelata na ferrosilicon na aluminom na mmeghachi omume okpomọkụ. A na-akụrisị ingots ndị a na-esi na ya pụta ma na-ekpuchi ya iji mepụta nha nha nha nke FeMo chọrọ.
• Ihe dị ka 20% nke RMC emepụtara n'ụwa niile ka a na-ahazi n'ọtụtụ ngwaahịa kemịkalụ dị ka molybdic oxide (Mo03) na molybdates. Enwere ike ịtụgharị ngwọta ammonium molybdate ka ọ bụrụ ọnụ ọgụgụ ọ bụla nke ngwaahịa molybdate na nhazi ọzọ site na calcinations na-emepụta molybdenum trioxide dị ọcha.
• A na-emepụta metal Molybdenum site na usoro mbelata hydrogen okpukpu abụọ iji nye ntụ ntụ molybdenum dị ọcha.

Kedu ihe eji ya:

• Ihe dị ka 20% nke molybdenum ọhụrụ, nke a na-emepụta site na ọla ndị a na-egwupụta bụ ihe eji eme igwe anaghị agba nchara nke molybdenum.
• Igwe nchara injinia, ngwa ọrụ na igwe dị elu, igwe nkedo na superalloys jikọtara ọnụ maka 60% ọzọ nke iji molybdenum.
• A na-eji 20% fọdụrụnụ na ngwaahịa emelitere dị ka lubricant grade molybdenum disulfide (MoS2), ogige kemịkalụ molybdenum na metal molybdenum.

Uru na ojiji akụrụngwa:

Igwe anaghị agba nchara

• Molybdenum na-eme ka nguzogide corrosion na ike dị elu nke igwe anaghị agba nchara. Ọ nwere mmetụta dị mma siri ike na pitting na crevice corrosion resistance na ngwọta nwere chloride, na-eme ka ọ dị mkpa na kemịkalụ na ngwa nhazi ndị ọzọ.
• Igwe anaghị agba nchara nke Molybdenum nwere bụ ihe na-enweghị atụ na-eguzogide corrosion ma na-ejikarị arụ ụlọ, ụlọ na ihe owuwu, na-enye mgbanwe mgbanwe dị ukwuu na ndụ imewe ogologo.
• A na-emepụta ngwaahịa dị iche iche site na igwe anaghị agba nchara nke molybdenum nwere maka nchebe dị ukwuu megide corrosion, gụnyere ihe ndị e ji arụ ọrụ, ihe mkpuchi ụlọ, mgbidi ákwà mgbochi, aka aka, ebe igwu mmiri, ọnụ ụzọ, ọkụ ọkụ na ihe mkpuchi anyanwụ.

Superalloys

Ndị a gụnyere alloys na-eguzogide corrosion na nnukwu okpomọkụ alloys:

• A na-eji alloys nke nickel na-eguzogide corrosion nwere molybdenum na ngwa ndị ekpughere na gburugburu ebe obibi na-emebi emebi n'ọtụtụ ụlọ ọrụ na ngwa, gụnyere akụkụ desulfurization nke flue gas na-eji wepụ sọlfọ sitere na ikuku ọdụ ọkụ.
• Akwa okpomọkụ alloys na-ma siri ike-ngwọta siri ike, nke na-enye iguzogide mmebi kpatara elu okpomọkụ creep, ma ọ bụ afọ-hardenable, nke na-enye ndị ọzọ ike na-enweghị budata ibelata ductility na dị nnọọ irè na mbenata ọnụọgụ nke thermal mgbasawanye.

Alloy ígwè

• Naanị obere obere molybdenum na-eme ka ike sie ike, na-ebelata iwe iwe ma na-ebuli iguzogide ọgụ hydrogen yana mgbawa nrụgide sulfide.
• Molybdenum agbakwunyere na-abawanye ike okpomọkụ dị elu ma na-eme ka weldability dịkwuo elu, karịsịa na nchara siri ike dị ala (HSLA). A na-eji ígwè ndị a dị elu na-arụ ọrụ dị iche iche, site na ụgbọ ala ndị dị arọ na-arụ ọrụ nke ọma na ụlọ, pipeline na àkwà mmiri, na-echekwa ma ọnụ ọgụgụ nke ígwè a chọrọ na ike na ihe ọkụkụ jikọtara ya na mmepụta ya, njem na mmepụta ya.

Ojiji ndị ọzọ

Ihe atụ pụrụ iche nke ojiji molybdenum gụnyere:

• Alloys dabere na molybdenum, nke nwere ezigbo ike na nkwụsi ike n'ibu na okpomọkụ dị elu (ruo 1900 ° C) na ebe ndị na-adịghị oxidizing ma ọ bụ oghere. Nnukwu ductility ha na ike siri ike na-enye ohere dị ukwuu maka ezughị okè na mgbaji na-agbaji agbaji karịa seramiiki.
• Molybdenum-tungsten alloys, mara maka nguzogide pụrụiche na zinc gbazere
• Molybdenum-25% rhenium alloys, eji maka rocket engine components na mmiri mmiri metal okpomọkụ Exchangers nke ga-ductile na ụlọ okpomọkụ.
• Molybdenum kpuchiri ọla kọpa, maka ime ala mgbasawanye, elu conductivity eletrọnịkị mbadamba
• Molybdenum oxide, nke a na-eji na-emepụta ihe na-akpali akpali maka ụlọ ọrụ petrochemical na kemịkalụ, na-etinye n'ọtụtụ ebe na nnụcha mmanụ crude iji belata ọdịnaya sọlfọ nke ngwaahịa a nụchara anụcha.
• Ngwaahịa molybdenum kemịkalụ ejiri na ngwakọta polymer, ihe mgbochi corrosion na usoro mmanu na-arụ ọrụ dị elu.