Tungsten-fiber gbasiri ike

Tungstendị mma karịsịa dị ka ihe maka akụkụ ndị nwere nrụgide siri ike nke ụgbọ mmiri na-ekpuchi plasma na-ekpo ọkụ na-ekpo ọkụ, ọ bụ ígwè nwere ebe mgbaze kachasị elu. Otú ọ dị, ihe na-adịghị mma bụ mgbawa ya, nke na-eme ka ọ ghara ịdị ike ma na-enwe ike imebi ya. Max Planck Institute for Plasma Physics (IPP) na Garching ewepụtala akwụkwọ akụkọ, ihe na-eme ka ọ dị ike karịa. Ọ mejupụtara homogeneoustungstenna mkpuchitungsten wiresagbakwunyere. Ọmụmụ ihe gbasara ike ime ka egosila ntozu oke nke ogige ọhụrụ ahụ.

Ebumnuche nke nyocha emere na IPP bụ ịmepụta ụlọ ọrụ ike nke, dị ka anyanwụ, na-enweta ume site na ngwakọta nke nuclei atomic. Mmanụ a na-eji bụ plasma hydrogen dị obere. Iji mee ka ọkụ na-ejikọta ya na plasma, a ga-amachibido ya na oghere magnetik ma kpoo ọkụ na okpomọkụ. Na isi 100 nde degrees na-enweta.Tungstenbụ metal na-ekwe nkwa nke ukwuu dị ka ihe maka components na-abata kpọmkwem na kọntaktị na plasma na-ekpo ọkụ. Egosiputara nke a site na nyocha buru ibu na IPP. Otú ọ dị, nsogbu a na-edozibeghị ugbu a bụ ihe na-adịghị mma nke ihe ahụ:Tungstenna-efunahụ ike ya n'okpuru ọnọdụ osisi ike. Nchegbu mpaghara - esemokwu, ịgbatị ma ọ bụ nrụgide - enweghị ike iwepụ ya site na ihe na-enye ntakịrị ohere. Ihe mgbawa na-etolite kama: Ya mere akụrụngwa na-emeghachi omume nke ọma maka ibufe mpaghara.

Ọ bụ ya mere IPP ji chọọ ụlọ ndị nwere ike ikesa esemokwu mpaghara. Seramiki nke nwere eriri na-arụ ọrụ dị ka ihe atụ: Dịka ọmụmaatụ, silicon carbide na-esi ike ka a na-eme ugboro ise mgbe ejiri eriri silicon carbide sie ike. Mgbe nyocha mmalite ole na ole gasịrị, ọkà mmụta sayensị IPP Johann Riesch ga-enyocha ma ụdị ọgwụgwọ ahụ nwere ike ịrụ ọrụ na ígwè tungsten.

Nzọụkwụ mbụ bụ imepụta ihe ọhụrụ ahụ. AtungsteEkwesịrị iji eriri ogologo kpuchie nke nwere extruded gbasie ike matrikstungsten wayamkpa dị ka ntutu isi. Waya ndị ahụ, e bu n'obi buru ụzọ dị ka ọkụfilamentsmaka oriọna ọkụ, ebe Osram GmbH wetara ya. A nyochara ihe dị iche iche maka mkpuchi ha na IPP, gụnyere erbium oxide. Ihe mkpuchi kpamkpamtungsten eririA na-ejikọta ya ọnụ, ma ọ bụ ihe yiri ya ma ọ bụ kpara akpa. Iji mejupụta oghere dị n'etiti wires na tungsten Johann Riesch na ndị ọrụ ibe ya wee mepụta usoro ọhụrụ na njikọ ya na onye ọrụ mmepụta ihe nke English Archer Technicoat Ltd. Achọpụtara usoro dị nro nke imepụta ogige: ThetungstenA na-edobe ya na wires site na ngwakọta gas site n'itinye usoro kemịkalụ na oke okpomọkụ. Nke a bụ nke mbụtungsten-fibre-emesi ike tungstenemepụtara nke ọma, yana nsonaazụ achọrọ: Njiji siri ike nke ogige ọhụrụ ahụ amụbaala okpukpu atọ n'ihe metụtara tungsten na-enweghị eriri mgbe emechara ule mbụ.

Nzọụkwụ nke abụọ bụ inyocha ka nke a si arụ ọrụ: Isi ihe pụtara bụ na eriri eriri na-agbaji n'ime matriks ma nwee ike ikesa ike na-arụ ọrụ mpaghara na ihe ahụ. N'ebe a, oghere dị n'etiti eriri na tungsten matrix, n'otu aka ahụ, aghaghị ịdị ike nke ọma iji nye ohere mgbe mgbawa na-etolite na, n'aka nke ọzọ, dị ike nke ọma iji nyefee ike n'etiti eriri na matrix. N'ime ule na-ehulata nke a, enwere ike ịhụ ya ozugbo site na X-ray microtomography. Nke a gosipụtara isi ọrụ nke ihe ahụ.

Ihe kacha mma maka uru ihe ahụ bụ na a na-edobe ike emelitere mgbe etinyere ya. Johann Riesch nyochara nke a site n'inyocha ihe nlele ndị ejirila ọgwụgwọ ọkụ tupu oge eruo. Mgbe a na-etinye ihe nlele ahụ na synchrotron radieshon ma ọ bụ tinye n'okpuru microscope nke eletrọn, ịgbatị ma na-ehulata ha na-egosikwa na nke a bụ njirimara ihe onwunwe ka mma: Ọ bụrụ na matriks ahụ ada ada mgbe nrụgide, eriri ndị ahụ na-enwe ike imechi cracks na-eme ma kwụsị ha.

A na-edozi ụkpụrụ maka ịghọta na imepụta ihe ọhụrụ ahụ. A ga-emepụta ihe nlere ugbu a n'okpuru ọnọdụ usoro dị mma yana nke kachasị mma, nke a bụ ihe dị mkpa maka mmepụta nnukwu. Ihe ọhụrụ a nwekwara ike ịmasị karịa ngalaba nyocha nke ngwakọta.


Oge nzipu: Mar-20-2020