Nzira Huru dzeKugadzira Tungsten Powder

Tungsten poda ndiyo huru mbishi yekugadzira tungsten carbide, pure tungsten, tungsten alloys uye zvimwe zvigadzirwa zvetungsten, inopfuura makumi manomwe muzana yehupfu hwetungsten iri kushandiswa mukugadzira tungsten carbide. Parizvino, nzira huru dzekuwana tungsten poda ndeidzi:

Hydrogen kuderedza nzira ye tungsten oxide

Iyi inzira yekudzikisa tungsten oxide kune tungsten hupfu uchishandisa H2 sechinhu chinoderedza. Kutora kuderedzwa kwehydrogen kweWO₃ semuenzaniso, maitiro ese ndeaya:

WO₃+3H₂=W+3H₂O

Parizvino, ma tungsten oxides anoshandiswa sezviya zvekudzikisa hydrogen kunyanya anosanganisira yellow tungsten trioxide (WO₃), blue tungsten oxide (kunyanya WO₂.₉), uye yepepuru tungsten oxide (WO₂.₇₂), etc. Nzira yekuderedza hydrogen ye tungsten oxide ndiyo nzira huru yekugadzira tungsten simbi yehupfu.

2. Hydrogen kuderedzwa kwe tungsten halides

Iyi inzira inoshandisa H2 sechinhu chinoderedza kuderedza tungsten halides (senge tungsten chloride, tungsten fluoride) kuita metallic tungsten. Semuenzaniso, munyaya yekuderedzwa kwehydrogen yeWCl6, maitiro ose ndeaya:

WCl6+3H₂=W+6HCI

Iyo hydrogen yekudzikisa maitiro e tungsten halides ndeye gasi-chikamu chekuita, inonyanya kushandiswa mumakemikari vapor deposition kugadzira ultrafine tungsten hupfu kana tungsten coatings. Parizvino, nzira yekudzikisa chlorination ye tungsten halides inongo shandiswa padiki-diki kugadzirwa.

3. Carbon Reduction Method yeTungsten Oxides

Kana musanganiswa we tungsten oxides uye kabhoni ichipisa kune imwe tembiricha, tungsten oxides inoderedzwa kuita tungsten hupfu. Kutora kuderedzwa kwekabhoni yeWO₃ semuenzaniso, maitiro ese ndeaya:

WO₃+3C=W+3CO

WO₃+3CO=W+3CO₂

Dzimwe nguva, shoma shoma yehydrogen inopinzwa muchoto kusimudzira nzira yekudzikisa kabhoni. Nekudaro, iyo tungsten poda inogadzirwa neiyi nzira ine yakakwira kabhoni yemukati uye haina kukodzera kune tungsten zvigadzirwa. Parizvino, nzira yekuderedza kabhoni yekugadzira tungsten powder haisati yashandiswa, asi inowedzera kushandiswa mukugadzirwa kwakananga kwe tungsten carbide, kunyanya ultrafine tungsten carbide powder uye tungsten carbide composite powder.

4. Dzimwe Nzira

Dzimwe nzira dzekugadzira simbi tungsten dzinosanganisira yakanyungudutswa munyu electrolysis, zinc kuderedza, uye plasma hydrogen kuderedzwa, pakati pevamwe.